LC APC Single-mode 9/125 Simplex 0.9mm Boot Size Fiber Optic Connector Mainly bought a spare, it is useless, do not know the...
5 of 5 Stars!
Cisco 10GBASE CWDM SFP+ 1310nm 40km Compatible Transceiver that's good, recommend !
4 of 5 Stars!
12 Fibers 10G OM3 12 Strands MPO Harness Cable 3.0mm LSZH/Riser Good quality, good service, very happy
3 of 5 Stars!
SC Female to LC Male Singlemode Simplex Adapter Converter The ordering process was simple and direct. The product was...
4 of 5 Stars!
Cat5e Nonbooted Unshielded (UTP) Ethernet Network Patch Cable, Purple PVC, 10m (32.81ft) Good quality, fast delivery. The next time will come to buy.
4 of 5 Stars!
24-Port 10/100M POE Switch with 2-Port Giga Combo SFP Slot Good quality, affordable.
4 of 5 Stars!
LC Female to ST Male Multimode Simplex Fiber Adapter Received from their USA warehouse directly, very impressed...
4 of 5 Stars!
12 Fibers 10G OM3 12 Strands MPO Harness Cable 3.0mm LSZH/Riser Good quality, good service, very happy
3 of 5 Stars!
LC APC Single-mode 9/125 Simplex 0.9mm Boot Size Fiber Optic Connector Mainly bought a spare, it is useless, do not know the...
5 of 5 Stars!
Cisco 10GBASE CWDM SFP+ 1310nm 40km Compatible Transceiver that's good, recommend !
4 of 5 Stars!
12 Fibers 10G OM3 12 Strands MPO Harness Cable 3.0mm LSZH/Riser Good quality, good service, very happy
3 of 5 Stars!
SC Female to LC Male Singlemode Simplex Adapter Converter The ordering process was simple and direct. The product was...
4 of 5 Stars!
Cat5e Nonbooted Unshielded (UTP) Ethernet Network Patch Cable, Purple PVC, 10m (32.81ft) Good quality, fast delivery. The next time will come to buy.
4 of 5 Stars!
24-Port 10/100M POE Switch with 2-Port Giga Combo SFP Slot Good quality, affordable.
4 of 5 Stars!
LC Female to ST Male Multimode Simplex Fiber Adapter Received from their USA warehouse directly, very impressed...
4 of 5 Stars!
12 Fibers 10G OM3 12 Strands MPO Harness Cable 3.0mm LSZH/Riser Good quality, good service, very happy
3 of 5 Stars!
Quick Re-Order

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Wednesday 27 March, 2019 | RSS Feed

Benefits of Using Fiber Optic Attenuators with Doped Fiber

by www.fiber-mart.com

Fiber optic attenuators are used in networking applications where an optical signal is too strong and needs to be reduced. There are many applications where this arises, such as needing to equalize the channel strength in a multi-wavelength system or reducing the signal level to meet the input specifications of an optical receiver. In both scenarios, reducing the optical signal strength is necessary or else system performance issues may arise.
 
Types of Fiber Optic Attenuators
There are many forms which can be taken by optical attenuators, but the two basic types of fiber optic attenuators are fixed and variable. In this article, we will focus on the fixed type. 
 
The size of the build out attenuator is approximately 1.25 inch. Many have a male interface connector at one end and a female interface connector at the other end but female to female interface connectors are also available. The fabrication of the build-out style is typically accomplished using with air gap attenuation or doped fiber attenuation.
 
What are Air Gap Attenuators?
Air gap attenuators accomplish the loss of optical power with the help of two fibers that are separated by air to yield the loss. These attenuators can be fixed or variable, but a downside is that they can be vulnerable to dust contamination and are also vulnerable to changing temperatures and moisture. One must also be cautious where they are used. For example, multi-channel analog systems, like ones used by CATV, this attenuator can create second order distortions that reduce the performance of the system.
 
What are doped Fiber Attenuators?
As the name suggests, doped fiber attenuators consist of a small fiber piece along with metal ion doping which provides the exact attenuation and interfaces in between female and male connections on the attenuators. These types can be wavelength sensitive because of their fabrication. The primary reasons why these doped fiber attenuators are preferred include:
 
Not susceptible to dirt, moisture, or temperature variations
Provide a stable performance over wide wavelength variations and band passes.
 





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