![]() The strength of an optical signal that passes through it to a fiber optic cable or open-air is decreased by an optical attenuator. In decibels over a specific distance the signal travels, the intensity of the signal is described. The change that is observed is the strength or amplitude of the signal and not the overall waveform or frequency, so for use in the desired application, the optical signal remains undistorted. Optical attenuators in optical communication systems are often used, in which the transmission loss or attenuation helps with the digital signals long-distant transmission. By an optical attenuator, the principle of gap loss can be applied it is installed where signals are transmitted so to the optimal level over a given distance, the signal intensity is lowered. The signal strength is not lowered enough by the attenuators installed elsewhere along with the optical fiber, but to compensate for some devices you need to utilize signal absorbing or reflecting components. Telling about the type of equipment in which it can be installed, the attenuator consists of a box-like structural or cylindrical shape. Sometimes found in an electronic circuit, the fixed variety of optical attenuators does not reflect light signals to decrease their intensity. It is used where high accurate data transmission is needed. By the amount of power, the optical isolator function is determined and can be handled in addition to important variables such as performance versus frequency range and temperature. Resistors are used by many optical attenuators, but a variable optical attenuator utilizes metal-semiconductor field-effect transistors or other solid-state components. On a printed circuit board a variable optical attenuator can be mounted, or in test devices such as an optical power meter, it can be used. With an optical fiber cable, many attenuators are installed in-line just to adjust the transmitted signal accordingly. Online fiber splitter is sold by many retailers and manufacturers so just by reading the product specifications one can assess their characteristics. Things that need to be considered include its overall dimensions and the type of environment it can operate, how much attenuation it provides, as well as average and peak power the device can tolerate. For more information, please visit: www.fiber-mart.com/
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