Polarization Diversity Coherent Receiver Module

The PDR series polarization diversity receiver modules are aimed at polarization-sensitive optical fiber sensing applications. The polarization diversity receiving module coherents the two polarization states of the local oscillator light and the signal separately, and uses two high-speed low-noise balanced detectors to receive them separately, which can well solve the problem of coherent polarization states.
It is suitable for distributed optical fiber sensing, laser wind radar, optical coherence tomography and other application fields.

Features
high bandwidth
high gain
low noise
Built-in low-noise isolated power supply

Application field
Fiber optic sensing
LiDAR
optical coherence tomography
Spectral measurement

DVS coherent receiver module

We have developed a DVS coherent receiver module for amplitude demodulation distributed fiber-optic vibration sensing (DVS) applications. This module not only has the characteristics of high signal-to-noise ratio of coherent detection, but also the output signal is amplitude signal. It can be directly used in the DVS system without modifying the demodulation algorithm; on the basis of the high signal-to-noise ratio of coherent detection, the analog signal is denoised inside the module, which can improve the signal-to-noise ratio as much as possible, and can reduce the application of the system optical amplification module , reduce system cost. It is very suitable for distributed fiber-optic vibration sensing (DVS) systems based on amplitude demodulation.

Features

High signal-to-noise ratio for coherent detection
Can be directly used in DVS system
No need to modify the algorithm
Reduce system cost
Built-in low-noise isolated power supply

Applications
Distributed fiber-optic vibration sensing (DVS) based on amplitude demodulation