Weak-Light Coherent Receiver Module CRM-200M-A
The weak-light coherent receiver module targets weak optical coherent detection. It integrates a high-speed, low-noise analog balanced photodetector and a preamplifying small-signal fiber amplifier. Coupler splitting ratio and length are tightly controlled to improve common-mode rejection. The preamplifier uses a special architecture for weak backscattered light, with low ASE and NF to improve optical signal-to-noise ratio. Applications include fiber sensing and wind-measurement lidar.
Specification Snapshot
Supply voltage
5 V
Fiber type [PM optional]
SMF-28(PM optional )
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Overview
The weak-light coherent receiver module targets weak optical coherent detection. It integrates a high-speed, low-noise analog balanced photodetector and a preamplifying small-signal fiber amplifier. Coupler splitting ratio and length are tightly controlled to improve common-mode rejection. The preamplifier uses a special architecture for weak backscattered light, with low ASE and NF to improve optical signal-to-noise ratio. Applications include fiber sensing and wind-measurement lidar.
Specifications
| Parameter | Value |
|---|---|
| Wavelength | C Wavelength band |
| Bandwidth | 200M |
| Detector Responsivity [1550nm;@1550nm] | 0.95@1550nm |
| Transimpedance Gain | 10K |
| Local | <7 dBm |
| Signal [Signal;Typical] | -50(Typical) |
| Supply voltage | 5 V |
| Supply current [max] | 3(max) |
| Coupling Method | DC/AC |
| Fiber type [PM optional] | SMF-28(PM optional ) |
| Optical input | FC/APC |
| RF output | SMA |
| Communication Interface | RS232 |
| Overall dimensions | 120 mm × 100 mm × 25 mm |
Applications
Fiber optic sensing; Doppler wind lidar; optical coherence tomography; spectral measurement
Key Features
High bandwidth; high gain; low noise; built-in low-noise isolated power supply.
Datasheet
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Supplier Information
Wuhan Guangshi Technology Co., Ltd. was founded in 2019, with a team of doctors and masters with years of experience. The company is dedicated to the R&D, sales and technical support of optoelectronic modules for systems such as fiber optic sensing, laser wind measurement, fiber optic communication, optical coherence tomography (OCT) and atmospheric remote sensing. Adhering to the business philosophy of 'products-based, customer-centric, value creation', we provide customers with high-quality, high-performance optoelectronic modules and solutions. The company's main products include InGaAs photodetectors, InGaAs balanced photodetectors, avalanche photodetectors, coherent receiver modules, low-light coherent receiver modules, polarization diversity coherent receiver modules, MZI interferometers, all-fiber phase modulators, etc.
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