SC UPC Singlemode Fixed Flanged Fiber Optic Attenuator, Female to Female, 1~25dB Optional

FC Fixed Fiber Optic Attenuator (Singlemode, Male to Female, APC, 1~25dB)

Fiber optic attenuators are devices to reduce the optical fiber power by a certain level within the fiber optic network. Fiber Attenuators are usually used when the signal arriving at the receiver is too strong and hence may overpower the receiving elements. This may occur because of a mismatch between the transmitters/receivers (transceivers, media converters), or because the media converters are designed for a much longer distance than for which they are being used. Sometimes attenuators are also used for stress testing a network link by incrementally reducing the signal strength (increasing the dB attenuation) until the optical link fails, thus determining the signal's existing safety margin.

This FC APC fiber attenuator contains doped fiber suitable for both 1310nm and 1550nm operation. Fixed attenuation values are available in 1dB increments from 1 to 25dB. We have a mature attenuator production process, and can fully meet customer needs. Each attenuator is shipped with a test report that makes it easy for customers to check the optical performance quickly.

Features:

• Attenuation levels ranging from 1dB to 25dB
• Male - Female Mating Configuration
• Doped fiber
• High-power light source durability
• Wavelength independence
• Meets Telcordia Standards: GR-326-CORE / Telcordia GR-910-CORE / Telcordia GR-1221-CORE

Specification:

Features and advantages of our optical fiber attenuator:

● Accurate attenuation value

● Industry standard attenuation level

● Low polarization dependent loss (PDL) and insertion loss

● Precision polishing to reduce back reflection

● Highly reliable physical contact connection

● device is divided into parts to ensure safe storage and easy assembly of parts

● Delicate, compact, durable and portable

● RoHS compliant

What is a fiber attenuator and when do i need it ?

The light traveling the optical fiber is the main carrier of information or data that needs to be transmitted along the fiber optical cable. In order to receive the useful data without the errors the system has to receive the light at an optimal optical attenuation level. Either too little or too much power will cause high bit error rates. The Bit Error Rate (also BER) is the number of bit errors per unit time. The bit error ratio is the number of bit errors divided by the total number of transferred bits during a studied time interval. Bit error ratio is a unitless performance measure, often expressed as a percentage. Too much power, and the receiver amplifier saturates, too little and noise becomes a problem as it interferes with the signal. This receiver power depends on two basic factors: how much power is launched into the fiber by the transmitter and how much is lost by attenuation in the optical fiber cable plant that connects the transmitter and receiver.

ATTENUATORS WORKING PRINCIPLE

If the power is too high as it often is in short single mode systems with laser transmitters, you can reduce receiver power with an attenuator. The power reduction is done by such means as absorption, reflection, diffusion, scattering, deflection, diffraction, and dispersion, etc. Optical attenuators usually work by absorbing the light, like sunglasses absorb extra light energy. They typically have a working wavelength range in which they absorb all light energy equally. They should not reflect the light or scatter the light in an air gap, since that could cause unwanted back reflection in the fiber system. The attenuating fiber is produced by using a solution doping technique to introduce transition or rare earth elements into the fiber's core. The dopant reduces the transmission of the fiber. The degree of attenuation depends upon the material used as the dopant, the dopant level, and the length of the attenuation segment.