Inline Fiber Optic Attenuators

An optical attenuator is a device used to reduce the level of an optical signal, either in free space or in an optical fiber. They are commonly used in fiber optic communications. Optical attenuators used in fiber optic communications systems may use a variety of principles for their functioning. Those using the gap loss principle are sensitive to the modal distribution ahead of the attenuator, and should be used at or near the transmitting end, or they may introduce less loss than intended. Optical attenuators using absorptive or reflective techniques avoid this problem. Because an air gap is subject to variations from contamination etc, attenuators without air gaps (based on doping etc) are more stable over time. The basic types of optical attenuators are fixed, step-wise variable, and continuously variable. Inline attenuators are incorporated into patch cables. The alternative 

What is a Fiber-optic attenuator

  In-line fiber optic attenuators commonly are available from 1 dB to 25 dB allowing you to reduce the signal strength of your optical signal so it isn't overpowered at the receiving end of the optical link. Light travels over a small glass strand which is measured in nanometer (nm) wavelengths the strength of the wavelengths signal is measured in decibels (nm).t the sign A fiber-optic data connection has a light wave traveling over it which are transmitted over the optical=glass-medium  & “read” at the receiving end; if the signal is too strong at the receiving end then the receiver can’t