A multi-channel optical attenuator module is an optical device that integrates multiple independent attenuation channels, and accurately controls the optical signal intensity in multimode or single-mode fibers through absorption, scattering, reflection, or changing the optical path length in a continuous or graded manner.
working principle
Electro optic modulation type: Utilizing the refractive index of lithium niobate and other electro-optical crystals that varies with voltage, the effective optical path length in the optical path is changed by applying different voltages, thereby achieving continuous adjustment of attenuation.
Mechanical micro motion type: driven by a stepper motor, a neutral density filter or variable aperture is used to change the light transmittance through mechanical displacement, achieving the purpose of attenuating light signals. It is suitable for high attenuation scenarios.
feature
High precision control: By adopting a precise control mechanism, continuous or graded adjustment of optical signal intensity can be achieved to meet the needs of various complex optical communication systems.
Multi channel design: Integrating multiple independent attenuation channels, it can simultaneously process optical signals from multiple channels, improving the transmission efficiency and stability of optical communication systems.
Wide wavelength range: Suitable for optical signals of different wavelengths, it can meet the needs of various optical communication systems.
High reliability and stability: Using good materials and production processes, it can operate stably for a long time in harsh environments.
Application field
Data center optical interconnection: It can simultaneously regulate the power of multiple parallel optical links, solve the problem of signal imbalance caused by differences in fiber length, and improve the transmission distance of high-speed optical modules.
5G fronthaul network: supports dynamic power adjustment of C-band optical signals, meets the requirements of 5G base stations for low insertion loss and high isolation of fronthaul links, and reduces base station energy consumption.
Quantum Communication Experiment: In a quantum key distribution system, accurate attenuation is used to control photon flow density, avoiding detector saturation and improving key generation rate.
Aerospace communication: Its radiation resistance and impact resistance make it an ideal choice for satellite optical communication and high-altitude balloon optical links, ensuring signal stability in deep space exploration.