DVS coherent receiving module is mainly used for amplitude demodulation distributed optical fiber vibration sensor (DVS) applications. The module has the characteristics of high SNR of coherent detection, and the output signal is amplitude signal. It can be directly used in DVS system without modifying demodulation algorithm; On the basis of coherent detection with high signal-to-noise ratio, the analog signal is denoised inside the module to maximize the signal-to-noise ratio, which can reduce the application of the system optical amplifier module and reduce the system cost.
Name | Model | Description | Parameter | Price |
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● High SNR of coherent detection
● Directly used in DVS system
● No need to modify the algorithm
● Low noise isolation power supply
● Reduce system costs
Product Model | DCRM-40M-A | DCRM-80M-A | DCRM-200M-A | Unit | |
Wavelength | 800~1700 | 800~1700 | 800~1700 | nm | |
Bandwidth | 40M | 80M | 200M | Hz | |
Detector Responsivity | 0.95@1550nm | 0.95@1550nm | 0.95@1550nm | A/W | |
Transimpedance Gain | 60k | 60k | 60k | V/A | |
Optical Input | Local | <5 | <5 | <5 | mW |
Signal | 300 | 300 | 300 | μW | |
Supply Voltage | 5 | 5 | 5 | V | |
Supply Current | 0.5(max) | 0.5(max) | 0.5(max) | A | |
Output Coupling Mode | AC | AC | AC | ||
Optical Fiber Type | SMF-28 | ||||
Optical Input | FC/APC | ||||
Radio Frequency Output | SMA |
Test Result
DVS coherent receiving optical path diagram
DVS coherent receiving module output signal
Bottom noise (@ 1M Ω output impedance)
● Distributed light based on amplitude
● Demodulation Fiber Vibration Sensing (DVS)