Fiber Optic Splitter Termination Box for FTTH Applications

Fiber optic splitter termination box provides a cost-effective solution for FTTH applications. Nowadays some manufacturers provide this type of box with pre-installed fiber splitters, adapters, splice trays or pre-terminated pigtail assemblies, which help to reduce installation time and cost and satisfy different requirements of customers. Today, this post mainly focuses on the basics of splitter termination box .

 

Fiber Optic Splitter Termination Box Overview

Fiber optic termination box generally refer to the box shape fiber optic management products used to protect and distribute the optical fiber links in FTTH Network. Usually the fiber optic box includes the fiber optical patch panels and fiber optic terminal box. Fiber optic patch panel is bigger size, fiber optic termination box is smaller. Actually there are too many fiber optic boxes and fiber management devices, they are hard to count the types, many manufacturers will make the fiber optic boxes according to their own design and they may give the fiber optic boxes different names and model numbers.

The fiber optic boxes panels can be pre-installed with various kinds of fiber optic adapters, these adapters are the interface via which the fiber box will connect the external devices. Smaller size fiber optic box, the terminal box, is also used for fiber optic distribution and organization. Our typical fiber terminal box are with 12 ports or 24 ports, with a size of 270mm*137mm*45mm. the fiber optic box are made of cold rolling steel and the surface of the box use the technique of dim blowing plastic. This type fiber optic box is typically installed with FC or ST adapters on the panel. This fiber terminal box could be installed on the wall or put in horizontal line.

Fiber Terminal Boxes

Besides fiber patch panels, one can also count on fiber terminal boxes for fiber distribution and organization. While typical fiber terminal boxes are with 12 ports or 24 ports, 8 ports, 36 ports, 48 ports and 96 ports fiber are available in the markets now. They are often installed with FC or ST adapters on the panel, either on the wall or put in horizontal line.

According to the design, FTB can be further divided into wall mount type and rack mount type.

The wall mount fiber termination boxes are designed for either pre-connectorized cables, field installation of connectors, or field splicing of pigtails. They offer an ideal solution for building entrance terminals, telecommunication closets, main cross-connects, computer rooms and other controlled environments.

 

Fiber Terminal Boxes

Besides fiber patch panels, one can also count on fiber terminal boxes for fiber distribution and organization. While typical fiber terminal boxes are with 12 ports or 24 ports, 8 ports, 36 ports, 48 ports and 96 ports fiber are available in the markets now. They are often installed with FC or ST adapters on the panel, either on the wall or put in horizontal line.

According to the design, FTB can be further divided into wall mount type and rack mount type.The wall mount fiber termination boxes are designed for either pre-connectorized cables, field installation of connectors, or field splicing of pigtails. They offer an ideal solution for building entrance terminals, telecommunication closets, main cross-connects, computer rooms and other controlled environments.

Moreover, in terms of installation environment, there are indoor FTB and outdoor FTB.

Indoor fiber termination box acts as the transition point between the risen cable and the horizontal cable, in this way, it provides operators much more flexibility when managing cables. Besides, indoor FTB makes it possible to leave space for overlength and terminated fibers, as well as for fiber splicing.

The outdoor fiber terminal boxes are environmentally sealed enclosures to distribute fibers for FTTX networks. They are also designed for fiber splicing, termination, and cable management.

Features and Benefits

Fiber optic splitter termination box enables service providers to accelerate their deployments more effectively and is an ideal solution when deploying networks in FTTH applications. And it offers increased efficiency within distinct FTTX network applications. Featuring a compact solution for wall mounting, these termination boxes provide a significant space savings while maintaining hand access to connectors. Following are the features and benefits of deploying fiber optic splitter termination box.

  • Provide a small footprint for splitting, splicing and terminating and are environmentally rated for indoor or outdoor use.
  • Available in several types, each box can equip with splice tray allowing for an input splicing option.
  • Accept standard splitters and splitters can be easily added after the termination box has been installed. And it can accommodate 1×4, 1×8, 1×16, 1×32 fibers, up to 64 fibers.
  • Its small size and flexible mounting options offer easy integration into cell sites and huts, providing on-demand capacity for wireless back haul applications.
  • Offer an economical solution for applications where larger sized FDHs (fiber distribution hubs) may be unfeasible.

Conclusion

Fiber termination box nowadays plays an indispensable role in the field of communication network with greater reliability and flexibility. The continual expansion of broadband networks and the resulting set up of fiber to the home (FTTH) infrastructures make network organizers adopt powerful management and planning systems. Fiber optic splitter termination box is a small part of this system. Fiber -MART can provides comprehensive solutions, any question pls do not hesitate to contact me at service@fiber-mart.com

What Fiber Attenuator Do You Use? LC Attenuator or SC?

Fiber optic attenuator is an essential passive component in the optical communication system. With the advancement of DWDM technology, as well as the potential to flexibly upgrade the reconfigurable optical add-drop multiplexer (ROADM), the demand for optical attenuator is sure to soar, especially for optical variable attenuator.

Types of Fiber Optic Attenuators

Optical attenuator takes a number of different forms. They are typically grouped as fixed optical attenuator and optical variable attenuator.

Fixed Optical Attenuator

Fixed attenuator, as the name of which has indicated clearly, is designed to have an unchanging level of attenuation, expressed in dB, such as 1dB, 5dB, 10dB, etc. Fixed value attenuators consist of in-line type and connector type. In-line type looks like a plain fiber patch cable. It has a fiber cable terminated with two connectors which you can specify types. Connector type attenuator looks like a bulk head fiber connector, with a male connector interface on one end and a female interface connector on the opposite end. It mates to regular connectors of the same type such as FC, ST, SC and LC. Their applications include telecommunication networks, optical fiber test facility, Local Area Network (LAN) and CATV systems.

Optical Variable Attenuator

Optical variable attenuator, or variable optical attenuator, generally uses a variable neutral density filter. It has advantages of being stable, wavelength insensitive, mode insensitive, and offering a large dynamic range. Variable optical attenuator is generally used for testing and measurement, but it is also widely adopted in EDFAs (Erbium-Doped Fiber Amplifier) for equalizing the light power among different channels. Basically, there are two types of optical variable attenuator: stepwise variable attenuator and continuously variable attenuator. Stepwise variable attenuator can change the attenuation of the signal in known steps such as 0.1 dB, 0.5 dB or 1 dB. Continuously variable optical attenuator produces precise level of attenuation with flexible adjustment. Thus, operators are able to adjust the attenuator to accommodate the changes required quickly and precisely without any interruption to the circuit.

 

How to Use Fixed Fiber Attenuator?

As shown in the figure below, fixed fiber optic attenuators should be always installed at the receiver end of the link (X in the drawing). This is because it’s more convenient to test the receiver power before and after attenuation or while adjusting it with your power meter at the receiver, plus any reflectance will be attenuated on its path back to the source.

For female to male fixed fiber optic attenuators, we can plug the patch cord to the female fiber optic adapter of the attenuator. And then plug the male plug connector of the attenuator to the equipment directly. For female to female fixed fiber optic attenuators, we should plug the two patch cords to the two female fiber optic adapter of the attenuator (shown in the figure below).

 

Conclusion

Fiber optic attenuator is a passive device used to reduce the power level of an optical signal because too much light can overload a fiber optic receiver and degrade the bit error ratio (BER). To achieve the best BER, the light power must be reduced by using fiber optic attenuator. Fiber-MART provides optical attenuators with various connector types, such as FC/SC/ST/LC/E2000, available with APC or UPC polish. Any question pls feel free to contact me at service@fiber-mart.com

Passive CWDM VS DWDM – Which to choose?

With current industry advancements trend that has equalized costs of transceivers, in technical battle of CWDM vs DWDM more advancements are in DWDM.

 

Lets compare passive CWDM vs DWDM from pure technical application viewpoint:

 

CWDM vs DWDM – Channel Uniformity:

As CWDM spectrum for 18 channels spans from 1260nm up to 1620nm compared to DWDM C-band 1530 – 1565 nm, CWDM has weakness from channel uniformity aspect. Attenuation in wide spectrum is different based on wavelength – for example, typical attenuation of G.652.C optical fiber is 0.38 dB/km at 1310nm wavelength and 0.22 dB/km at 1550nm. So in CWDM system You can get quite great disparity of channel optical performance using different CWDM wavelength. Uniformity of optical channels across whole 1260-1620nm spectrum depends on fiber cable specification. – we suggest checking carefully if You plan using passive CWDM. Especially it is very important for old G.652 specification fiber – it has so called “water-peak” phenomena in range of 1390 and 1490 nm that are not usable for CWDM connections at all. DWDM is clear winner here – due it’s narrow spectrum channel properties on same fiber will be almost identical.

 

CWDM vs DWDM – Capacity:

It’s clear winner here – while maximum capacity of CWDM system is 18 wavelengths all spectrum, DWDM using traditional C-Band 1530 – 1565 nm allow to have 45 100GHz spaced DWDM channels, but with introduction of 50 GHz spaced transceivers we can double number of channels up to 90. In future, we can expect to have 25 GHz and even 12.5 GHz frequency offset even multiplying number of possible channels to 180 or 360. If that is not enough – there is S-band (1460-1530 nm) and L-band (1565-1625 nm) which can be used with DWDM as well, just is not mainstream yet.

 

CWDM vs DWDM – Distance:

Maximum distance of xWDM connection depends on two main factors – maximum budget of optical transceivers and attenuation of all passive elements – fiber itself, number of joints and splices, attenuation of passive filters (Chromatic dispersion as well, but we don’t consider it much a factor up to 80km). If looking on 10G connection data rate, with both, CWDM and DWDM, passive technologies You can have up to 23 dB guaranteed budget using popular SFP+ transceivers (With XFP You can have 26dB budget), what is enough to have 80km WDM link with both technologies. But big advantage of DWDM is, that due it’s narrow spectral width it’s possible to use cost efficient and widely available EDFA (Erbium Doped Fiber Amplifier) boosters, which is one very cost efficient way allowing extension of DWDM reach.

 

CWDM vs DWDM – Spare Parts:

Even optical transceivers are mature elements and failure-rates are very uncommon, introducing WDM technology You would like to have backup stock of all active elements. If You are planning to have just small scale deployment and connect just two or few network nodes, it could mean that You basically need to back up everything – resulting on doubling up of your investment. DWDM is a winner here as well, due availability of Tunable DWDM transceivers, with can replace all Your different wavelength DWDM transceivers with one or two units.

 

Conclusion

CWDM still has price advantages for connection rates below 10G and for short distances with low data rates it’s currently most feasible technology. For more information,welcome to visit www.fiber-mart.com, pls feel free to contact me at service@fiber-mart.com

WDM Filter Technology

As an unprecedented opportunity to dramatically increase the bandwidth capacity, WDM(Wavelength Division Multiplexing) technology is an ideal solution to get more bandwidth and lower cost in nowadays telecommunications networks. WDM Filters can separate or combine optical signals carried on different wavelengths in a cost-effective manner.

 

Splitters versus Filters

One issue with WDM-PON(Passive Optical Network) is that there is no industry-accepted definition. WDM-PON is an architecture based on optical filters rather than Fiber Optic Filter. Following are two reasons:

One is insertion loss. Choosing filters implies arrayed waveguide gratings (AWGs). No other filter technology is seriously considered for WDM-PON if filters are used.

With an AWG, the insertion loss is independent of the number of wavelengths supported. This differs from using a splitter-based architecture where every 1×2 device introduces a 3dB loss. Using a 1×64 splitter, the insertion loss is 14 or 15dB whereas for a 40-channel AWG the loss can be as low as 4dB. Thus using filters rather than splitters, the insertion loss is much lower for a comparable number of client ONUs.

There is also a cost benefit associated with a low insertion loss. To limit the cost of next-generation PON, the transceiver design must be constrained to a 25dB power budget associated with existing PON transceivers.

To live with transceivers with a 25dB power budget, the insertion loss of the passive distribution network must be minimised, explaining why filters are favoured.

The other main benefit of using filters is security. With a filter-based PON, wavelength point-to-point connections result. This is an issue with PON where traffic is shared.

 

Arrayed Waveguide Grating (AWG)

AWG, including Athermal AWG (AAWG) and Thermal AWG (TAWG), is commonly used as optical MUX/DeMUX in WDM systems. AAWG have equivalent performance to standard TAWG but require no electrical power, software or temperature.

 

Fiber Bragg Grating (FBG)

FBGs are versatile wavelength filters for multiplexing and demultiplexing WDM signals. They also can compensate for chromatic dispersion that can degrade the quality of the WDM signal in an optical fiber.

 

Thin Film Filter (TFF)

Thin film filters were adopted very early on and have been widely deployed since because they have the unique attributes that meet the stringent requirements of optical communication systems. The main advantage of thin film filters is its ability to achieve high accuracy in processing in small device sizes when compared it to competing technologies.

 

 

Conclusion

1310/1490/1550 FTTX FWDM is based on filter based platform for optical device. 1490/1310/1550nm FTTH FWDM can realize the multiplexing and demultiplexing of two communication signal 1490/1310 and 1550nm. filter-based WDM components have much wider operating bandwidth, lower insertion loss, higher power handling, high isolation, etc and Achieve two-way communication, which is widely used in the upgrade and expansion of optical networks. For more information, welcome to visit www.fiber-mart.com or contact me at service@fiber-mart.com

Fiber Optic Enclosures In Cabling Systems

Fiber-optic cabling systems have a few specialized components, including fiber optic enclosures and connectors.

Fiber optic enclosure is a box to load fiber optic patch panel/fiber optic cassettes and other accessories in to provide a cable management solution for fiber cabling. Fiber enclosure ensures a tidy cabling environment and protects fragile fibers from outside damage. Also, the elaborate design of various types of fiber optic enclosures allows different deployment scenarios and better caters for specific requirements. Fiber enclosure rack mount or fiber enclosure wall mount enclosure provides optional mount applications.

 

 

What Is Fiber Optic Enclosure?

Fiber enclosure/fiber spice box may refer to an empty box or an intact unit after installation. A loaded fiber optic box contains installed assembly units to connect and separate various fiber optic cables. Usually fiber optic enclosure unloaded comes with 1U/2U/4U available, which can house corresponding quantity of fiber optic cassettes or fiber patch panels. Some people mention fiber optic enclosure and fiber optic patch panel as the same thing since they are matching devices.

 

What to Benefit From Fiber Optic Enclosure?

Cable Management Function

  • In general, fiber enclosure functions cable management in data centers for a clean and tidy cabling environment.
  • It houses and fix fiber optic patch panel or fiber optic cassettes in a box for better management and protection.
  • Fiber optic enclosure inside accessories such as fiber slack management spool provides a proper bend radius for cables and helps to route, manage and store fibers.
  • Different types of adapters installed-in enable various incoming fibers to be terminated in high density and protected them from damage.

 

 

Types of Fiber Optic Enclosures

 

Patch panels come in many shapes and sizes. Some are mounted on a wall and are known as surface-mount patch panels. Others are mounted in a rack and are called rack mount patch panels. Each type has its own benefits. Surface mount panels are cheaper and easier to work with, but they can’t hold as many cables and ports. Surface-mount patch panels make good choices for smaller (fewer than 50 drops) cabling installation. Rack-mount panels are more flexible, but they are more expensive. Rack mount patch panels make better choices for larger installations. Patch panels are the main products used in LAN installations today because they are extremely cost-effective and allow great flexibility when connecting workstations.

 

In addition to the standard fiber patch panels, a fiber-optic installation may have one or more fiber distribution panels, which are very similar to patch panels in that many cables interconnect them. However, in a distribution panel, the connections are more permanent. Distributions panels usually have a lock and key to prevent end users from making unauthorized changes. Generally speaking, a patch panel is found wherever fiber optic equipment hubs, switches, and routers are found. Distribution panels are found wherever multifiber cables are split out into individual cables. Here is the example of 24 port patch panel.

 

Conclusion

Wall-mount available unloaded, as well as having the capability to become a full-splice enclosure with mechanical terminations. Fiber-MART supplies two types of fiber splice closures which are the horizontal (inline) type and the vertical (dome) type. Both are made of excellent engineering plastics to be waterproof and dust proof. And with various ports types, they can fit different fiber optic core numbers. More details about splice closure. Any question pls feel free to contact me at service@fiber-mart.com

Why Should You Choose a Wall Mount Rack & Cabinet ?

Network racks are essential for storing your equipment in an organized, safe and efficient manner.

 

Rack solutions allow you to house many IT components in a smaller amount of space, helping you use storage area more efficiently, while also protecting network equipment and maintaining an organized environment. Network racks organize IT equipment into standard-sized server rack cabinets for greater efficiency throughout the data center. Rack styles range from open-frame racks consisting of two or four mounting rails (called posts) without sides or doors to lockable rack cabinets with rails, front and rear doors and side panels.

  • The height of a network equipment rack is measured in units designated by the letter U (each rack unit is 1.75 inches/44.45 mm) high; server cabinets are available with capacities ranging from 2U to 58U.
  • Choose floor-standing racks with rolling casters or wall-mount racks for applications where floor space is limited or extra security is important

 

 

Why are Network Racks required?

Network Racks are an important component of the structured cabling system.Network racks are required for neatly, efficiently and safely holding all the networking equipments. If there are no network racks/ patch panels, then the cabling would look cluttered. Network racks can hold many components in a relatively smaller space, which enables one to utilize the available storage space very efficiently. Network racks are required for the physical safety of all the equipments kept within, as most of them could be locked and access denied for unauthorized personnel.Network racks are also required for improving the health of the networking equipments stored inside. For example, when the cables are taken carefully and neatly through the cable managers in the racks, there is little chance of data loss due to excessive cable bends. Also, the cooling fans in the network racks provide additional cooling to prevent any damage to the networking equipments kept inside them, due to over heating.

 

The benefits of a wall mount rack

 

These racks do not take up space on the floor.

Though this benefit may seem obvious, it is important. When you are working in a small space, you need to use the space that you do have as efficiently as possible. Wall mount racks allow you to optimize your work space by keeping IT equipment off of floors and desks.

 

They are easier to setup and install than other types of rack solutions.

Most small or home-based businesses do not have in-house IT solutions and may choose to install network racks on their own. With a basic understanding of how these racks work, you can setup and install wall mount racks yourself.

 

Wall mount server racks and cabinets save floor space and are ideal for smaller installations or to house system distribution points.Open-frame “rack” styles are great for controlled spaces such as utility rooms. Fully enclosed “cabinet” style models provide security to protect equipment in more open spaces from tampering, dust, and other hazards.Looking for enhanced rear access to equipment and wiring; select from styles that have hinged, or swing, center sections vs. being affixed directly to the wall.

 

Conclusion

No matter what rack solution you choose, it is important that you maintain network security and proper cable management. Fiber-Mart provides comprehensive solutions for both Wall and Floor applications as well as buried directly underground. And Fiber-Mart Cable Management are suitable for specific layout requirements and provides ideal solution for the distribution of cables and access to power, data and communication services on the wall and under the floor and for pole.any question pls feel free to contact me at service@fiber-mart.com

Customized 40G QSFP+ to 8 LC AOC Breakout Cable

Bandwidth usage is soaring, driven by the proliferation of Internet-connected devices.  In this article, some knowledge of 40G QSFP+ to 8 LC AOC Breakout Cables will be provided.

 

40G QSFP+ to 8 LC AOC Specifications

40GBASE QSFP+ to eight LC/SC/ST/FC Connector Breakout Active Optical Cable are a high performance, low power consumption, long reach interconnect solution supporting 40G Ethernet, fiber channel and PCIe. It is compliant with the QSFP MSA and IEEE P802.3ba 40GBASE-SR4. QSFP+ Breakout Cable is an assembly of 4 full-duplex lanes, where each lane is capable of transmitting data at rates up to 10Gb/s, providing an aggregated rate of 40Gb/s. QSFP+ Breakout Cable are suitable for short distances and offer a highly cost-effective way to connect within racks and across adjacent racks. This product is a high data rate parallel active optical cable (AOC), to overcome the bandwidth limitation of traditional copper cable. Consequently, an aggregate data rate of 40Gbps over 100 meters transmission can be achieved by this product, to support the ultra-fast computing data exchange.

 

All our 40GBASE QSFP+ to LC/SC/ST/FC Connector(8) Breakout Active Optical Cable are 100% compatible with major brands like Cisco, Juniper, Enterasys, Extreme, H3C and so on.

QSFP-8X-AOC-1

  • Connector 1: QSFP+
  • Connector 2: 8 x LC/SC/ST/FC Connector
  • Length: 1 meter
  • Cable Type: AOC Cable
  • Full duplex 4 channel 850nm parallel active optical cable
  • Transmission data rate up to 10.3Gbit/s per channel
  • SFF-8436 QSFP+ compliant housing and hot pluggable electrical interface.
  • Management Interface and digital diagnostic monitoring(DDM) through I2C
  • Support Rx output pre-emphasis
  • 4ch 850nm VCSEL array
  • 4ch PIN photo detector array
  • Helix type multi-mode optical fibre cable of up to 100m
  • OFNP (Optical Fibre Non-Conductive Plenum) rated cable
  • Differential AC-coupled high speed data interface
  • Housing isolated from connector ground
  • Operating Temperature: 0 to 70℃
  • RoHS 6 compliant
  • 3V power supply voltage

Applications

  • Infiniband transmission at 4ch SDR(2.5Gbit/s), DDR(5Gbit/s) and QDR(10Gbit/s)
  • Multi-channel 10Gb Ethernet transmission up to 4 channels
  • Fiber Channel transmission at 8.5Gbit/s per channel, up to 4 channels
  • QSFP+ to LC/SC/ST/FC cables with MT connectors for plugging into existing cable runs or patch pannels
  • Creating a breakout cable with four Duplex LC connectors for port expander applications
  • SDR /DDR /QDR
  • Data Centers

Conclusion

Along with the popularity of 40G Ethernet, the market of 40G QSFP+ AOC cable has been growing over the years. It is definitely a better choice for high speed transmission over short distances. If you would like to order high quality compatible 40GBASE QSFP+ to LC/SC/ST/FC Connector(8) Breakout Active Optical Cable and get worldwide delivery, we believe Fiber-mart.COM is your best choice.any question pls feel free to contact me at service@fiber-mart.com

Difference Between Tight-Buffered Breakout and Distribution Cables

There are two basic styles of fiber optic cable construction: loose tube and tight buffered. Tight buffered cables provide improved reliability and quick termination for today’s cable installation systems. Tight-buffered breakout cables and distribution cables are two main types of the tight-buffered cables.loose tube cables hold more than one optical fiber, each individually sleeved core is bundled loosely within an all-encompassing outer jacket. However, in tight buffered cables, there are not so many cables as loose tube cables.

 

Cable Structures

Breakout Cable Structure

Breakout cable is also known as fan-out cable. As the following picture shows, breakout cable consists two or more simplex cables bundled around a central strength member. Each fiber has its own jacket and all of the fibers are packaged together inside the same outer jacket. Thus, breakout cable can also be broken out into individual simplex cables for separate use when running through walls of a building. Breakout cable is usually designed with tight buffer and the fiber counts are varied from 2 to 24 fibers.

Distribution Cable Structure

 

Unlike the breakout cable, distribution cable is smaller in size and lighter in weight. Fiber counts of distribution cable can be more intensive than the breakout cable for up to 144 fibers. Many fibers may not be used immediately but can be left for future expansion. Although the distribution cable has a more compact design, the tight-buffered fibers inside the cable are only bundled in a single outer jacket for protection, as shown in the picture below. Yet this has made the distribution cable to be easily handled and stripped for field termination.

 

Conclusion

Tight-buffered cables are optimal for indoor applications. With the design of armored layer, they are also used for indoor/outdoor applications. Fiber-Mart provides a wide range of quality optical fiber cables with detailed specifications displayed for your convenient selecting. Per foot price of each fiber cable is flexible depending on the quantities of your order, making your cost of large order unexpected lower. Customers can also have the flexibility to custom the cable plant to best fit their needs.any question pls feel free to contact me at service@fiber-mart.com

The Advantages of CATV EDFA

Optical amplifiers serve as an integrated part of long haul data transmission. Fiber optical transponders and fiber optical amplifier are used in the WDM fiber optic system, and it makes WDM transmission possible. In recent years,fiber optic CATV EDFA System especially 1500nm optical fiber CATV System is being rapidly develop in our country.

What is EDFA?

Erbium Doped Fiber Amplifier is short for EDFA,which was applied in 90 s in the optical fiber transmission system and its popularization and application of optical fiber communication technology has brought a revolution.EDFA is in small volume,low power consumption,easy to us.What’s more,it is convenient to install all kinds of application systems,such as SDH frame inside,CATV machine box, DWDM system frame.as one of a functional modes of the Optical fiber amplifier system,there are generally two kinds of methods to insert the network management system.One is 232 c interface circuit with optical fiber amplifier to transfer parameters of the optical fiber amplifier and alarm information to the network management system,unified management,display and disposal.

An EDFA is an optical amplifier based on Erbium-doped optical fiber, that amplifies optical signals without converting them into electrical form. EDFAs use semiconductor lasers to pump Erbium Doped Fiber to amplify light in 1.5 μm wavelength region where telecom fibers have their loss minimum. It has low noise and can amplify many wavelengths simultaneously, which makes DWDM possible and becomes a key enabling technology for optical communication networks. Since the realization of EDFA, it has developed rapidly and has become the amplifier choice for most applications in optical communication.

 

Advantages of CATV EDFA

EDFA is in the low noise,has the characteristics of good gain trace,large amplifier bandwidth,compatible with wavelength division multiplexing (WDM) systems,with high efficiency,work performance is stable,mature technology and so on and so forth.It is very popular in the modern long-distance high-speed optical communication system.

◆ Good character:

Before the pump generally use 980 nm,after level pump use 1480 nm.Minimizing the NF of EDFA by reasonable optimization to make the system access excellent CNR.

◆ Reliability:

Use 1 u 19 “standard rack, built-in high-performance switching power supply.It can work in 85∽265 vac enterprise voltage.DC48V power supply (reservations) can be an option,too.Chassis cooling can be automatic temperature control.

◆ Intuition:

This machine contains a microprocessor to monitor the working state of the pump laser, LCD displays the working parameters.

◆ Network management model:

Options type monitoring transponder to ensure to meet the national standard with the SCTE HMS standards, which can realize network management monitoring.

◆ Adjustable output optical power:

Output optical power can be changed to -3dB.

◆ The power plug type:

Aluminum structure plug type switching power supply.Be good for heat dissipation and replacement.

 

Conclusion

The most prominent feature of optical amplifier is that the device can amplify optical signal directly without the need to convert the signal into an electrical one before amplifying. EDFA (Erbium-doped Fiber Amplifier) is the one type of many different optical amplifiers that can achieve signal amplification over long-hual optical communication. Fiber-MART provides broad optical amplification solutions for different applications, from telecom, datacom to CATV and has strong technology and experience to design and manufacture EDFA, EYDFA, Raman and Raman-EDFA hybrid. You can save cost by using the most efficient Fiber-Mart CWDM & DWDM Networks solutions. Pls feel free to contact me at service@fiber-mart.com

Introduction to Fiber Optic Splice Closure

Fiber optic splicing is important for fiber connections. Fiber Optic Splice Closure is a fiber management product typically used with outdoor fiber optical cables. It provides space and protection for the fiber optic cable splicing and joint. Fiber splice closure is used for aerial, strand-mount FTTH „tap“ locations where drop cables are spliced to distribution cables.

What is a fiber Optic Splice Closure?

In fact, except underground application, fiber optic splice closure is also used for aerial, strand-mount FTTH “tap” locations where drop cables are spliced to distribution cables. It is usally used with outdoor fiber optic cables which provides space for the outdoor fiber optic cables to be spliced together. The fiber optic splice closures and the fiber trays inside will protect the spliced fiber and the joint parts of the outdoor fiber cables.

Fiber optic splice enclosures are used to protect stripped fiber optic cable and fiber optic splices from the environment, and they are available for indoor as well as outdoor mounting.Outdoor fiber optic enclosures are usually weatherproof with watertight seals.In a typical wall-mounted splice enclosure, fiber optic cable is supported by cable ties, and the cable strenght member is securely fastened to the enclosure’s support. Metallic strenght members must be grounded securely.the cable jacket(sheath) stops at the splice enclosure’s cable ties. Optical fiber tubes, individual tight buffered fibers, or pigtails are supported by the tube brackets and continue to the splicing trays.

Key Features of Fiber Optic Splice Closures

Fiber splice closures are made from special industrial grade, high tension plastic with a reliable moisture barrier. They are also optimized to resist aging of the material due to factors in the natural environment such as ultraviolet light.

  • The box adds aging-resistant in imported high tensile construction plastic out-faster is made up of stainless steel
  •  Overlap structure in splicing tray is easy to install
  •  Suitable for ordinary fiber and ribbon fiber
  •  Perfect leak proofness
  •  Perfect and reliable sealing operations
  •  Fiber-bending radium guaranteed more than 40mm
  •  Full accessories for convenient operations
  •  Fiber optic splice closure can be used repeatedly
  •  For aerial, and direct buried applications

Generally the fiber optic splice closures are horizontal types and dome type (also called vertical type). Horizontal types are used more often than vertical type (dome type) closures.

Horizontal Types

Horizontal types splice closure look like a flat or cylindrical box which provide space and protection for fiber optic cable splicing and joint. They can be mounted aerial, buried, or for underground applications. Most horizontal fiber optic splice closure can fit hundreds of fiber connection. They are designed to be waterproof and dust proof. They can be used in temperature ranging from -40°C to 85°C, can accommodate 70 to 106 kpa pressure and the case are usually made of high tensile construction plastic.

Vertical Types

Vertical type of fiber optic splice closure looks like a dome. This is why they are also called dome type. They meed the same specification as the horizontal types. They are usually designed for buried applications.

 

Conclusion

Fiber-Mart supplies two types of fiber splice closures which are the horizontal (inline) type and the vertical (dome) type. Both are made of excellent engineering plastics to be waterproof and dust proof. And with various ports types, they can fit different fiber optic core numbers.Fiber splice tray, fiber distribution box and fiber optic enclosure are also offered in conjunction with the splice closures, promoting a safe and well-managed environment for fiber optic splices. Custom service is available according to your requirement.any question pls feel free to contact us at service@fiber-mart.com