Optical fiber attenuator is a kind of optical device which can reduce the energy of optical signal. For the attenuation of input optical power, the distortion caused by optical receiver is avoided because of the high input power.
As a kind of optical passive device, optical fiber attenuator is used for adjusting optical power performance in optical communication system, calibrating calibration of optical fiber instrument and attenuation of fiber signal. Fiber Optic Attenuator The product is made of a decaying fiber with metal ions and can adjust the optical power to the desired level.
The optical fiber attenuator usually produces attenuation by absorbing light, as sunglasses absorb the extra light energy, the fiber attenuator has a working wavelength range that absorbs light, and at this wavelength it should not reflect the lights, Fiber Optic Attenuator as this may lead to unwanted echo reflection in the fiber system. Another type of optical fiber attenuator utilizes a certain length of high loss fiber, reduces its input light signal power and operates in such a way that its output signal power is less than the input signal power. Fiber Optic Attenuator The optical power is reduced by absorption, reflection, diffusion, scattering, deflection, diffraction and dispersion of the optical signal.
Application of optical fiber attenuator
1. Test the optical power level by temporarily adding a calibrated signal loss.
2. Permanently installed to a properly matched transmitter and receiver level.
3. Sharp bending of optical fibers may result in signal loss.
Type of optical fiber attenuator
According to different forms, fiber attenuator can be divided into fixed fiber attenuator and variable fiber attenuator.
The types of ports can be categorized into the following categories:
SC Optical attenuator: Applied to the SC fiber interface, it looks very similar to the RJ-45 interface, but the SC interface appears to be more flat, the difference is still the inside of the tablet, Fiber Optic Attenuator if it is 8 fine copper touch piece, it is RJ-45 interface, if is a copper column is SC fiber interface.
LC Fiber Attenuator: Applied to LC Fiber interface, connecting SFP module connector, it is made of modular Jack (RJ) latch mechanism with convenient operation. (commonly used by routers)
FC Fiber Attenuator: Used in FC fiber interface, Fiber Optic Attenuator external strengthening method is the use of metal sets, fastening mode for turnbuckle. Generally used on ODF side (most of the wiring rack)
St Fiber Attenuator: Used in St Fiber interface, Fiber Optic Attenuator often used in fiber optic wiring frame, the shell is circular, fastening mode for turnbuckle. (For 10BASE-F connections, connectors are usually St types.) Used in fiber optic wiring rack)
Optical fiber Attenuator is based on the user's needs, the optical signal can be controlled attenuation. Mainly used in optical communication line system assessment, research and adjustment and correction. Fiber Optic Attenuator The following network technology small series for everyone to explain the classification of optical fiber attenuator.
1. On-line optical fiber attenuator
The on-line optical fiber attenuator is an optical communication device which can provide specific attenuation quantity according to different engineering needs. The on-line optical fiber attenuator can be applied to all kinds of optical fiber transmission lines, and the light intensity attenuation is set up beforehand. The optical fiber attenuator is mainly used in optical fiber communication network, optical fiber CATV network, Fiber Optic Attenuator fiber optic data network and optical fiber test system. The attenuation value of the on-line optical fiber attenuator is high, the additional loss is low, the stability is better than other types, and its attenuation value can be adjusted according to its own needs.
2. Fixed optical attenuator
The fixed optical fiber attenuator is more like an adaptor, which is mainly used in optical fiber communication system, optical fiber CATV and high-power optical devices. Fiber Optic Attenuator Mainly through the use of flange, FC, SC, ST and LC connectors can be used in all kinds of joints, its installation is very convenient, easy to use, by many users love.
3. Optical Fiber Attenuator
The optical fiber attenuator is a male-female device, which is the same as a fixed fiber attenuator, and supports a variety of joint modes such as LC, SC, FC and St. The yin-yang optical fiber attenuator is grinded by PC, UPC or APC, and the attenuation value is 1-30db. It uses metal ion attenuation optical fiber technology to achieve attenuation effect, with light weight, high precision, various forms, easy to use, small volume and light power source and so on. Mainly used in: optical wiring frame, optical fiber network system, high-speed optical fiber transmission system, cable TV (CATV) system, long-distance trunk-line dense wavelength division multiplexing (DWDM) system, Optical Division Multiplexer (OADM).