Fiber Optic in-Line Doped Attenuator

Product Specifications

Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Connection Structure:	SC
Application:	Communication
Type:	Optical Attenuator

Product Description

SC LC FC ST In-line doped Fiber Optic Attenuator
Types of Fiber Optic Attenuators
Optical attenuators can take a number of different forms and are typically classified as fixed or variable. Fixed attenuators can be broken down into either build out style or incorporated into a patch cord. The build out variety is a small (~ 1.25 inch long) attenuator with a male connector interface on one end and a female interface connector on the opposite end. The build out style is typically fabricated with either air gap attenuation or doped fiber attenuation.
Air Gap Attenuators
In air gap attenuators, the specified loss of optical power is accomplished by two fibers that are separated by air to yield the correct loss. Air gap attenuators are susceptible to dust contamination and can be sensitive to moisture and temperature variations. And if air gap attenuators are applied in multi-channel analog systems such as those used by CATV companies, it can be a huge mistake as the attenuator itself can create second order distortions that hamper the performance of the system.
Doped Fiber Attenuators & Benefits
Doped fiber attenuators are exactly as the name implies. A short piece of fiber with metal ion doping that provides the specified attenuation and the interface between the male and female connections on the attenuator. The doped fiber attenuator is the preferred component for a number of reasons. Doped fiber is not susceptible to dirt build up, moisture, or temperature variations. And they are made to perform with stability over wide wavelength variations and band passes. Attenuation incorporated into a patch cord can be fabricated with either a fusion splice or the leg of a fused coupler. These types can sometimes be wavelength sensitive because of how they are fabricated.
Doped fiber attenuators are the preferred attenuators for all of the reasons provided above in the appropriate point reduction of an optical signal. However, they can also be mistakenly applied when testing the performance of optical equipment and using attenuators (in place of real fiber lengths) to simulate a fiber length/distance or network. Only real fiber lengths simulate the various chromatic and polarization dispersions with which real systems must operate. Therefore, real fiber should always be used whenever possible to test equipment that will utilize optical fiber in the field.

Fiber Optic Attenuator
Vkplus Technology Inc. Offers high quality male-female attenuators ranging from 1 to 30dB. Each attenuator is made with continuous light-absorbing doped fiber which offers excellent environmental stability and low back reflection. The front of the attenuator is a male plug connector style that allows the attenuators to be plugged directly into receiver equipment or adapters in patch panel. The rear is a female socket adapter that allows a patch cord to be mated into the back of the attenuator. The attenuator is available in SC, FC, ST, LC, and MU type.
In a fiber optic system, male-female attenuators play an important role in controlling optical power levels in Telecommunications, CATV applications and other single mode fiber optic communications applications. As such, they must offer consistent performance over a range of operating conditions so attenuation levels remain constant and predictable.
Key Features:
1. Accurate attenuation utilizing doped fiber.
2. High return loss
3. Low wavelength dependency over 1310-1550 range
4. Meets Telcordia GR326 end geometry and tested to GR910.
5. 1 to 30dB availability.
6. Clean and Scratch-free ferrule end face.
7. Optical performance and ferrule geometry is 100% factory tested.

Applications:
1. EDFA
2. Power balancing in DWDM
3. CATV
4. Power leveling in optical add/drop multiplexing
5. Telecommunication Networks