Dual-Channel APD Photodetector for DTS DTS-APD2
The DTS-APD2 module integrates 2 sets of single-mode/multimode WDMs and APD photodetectors. It is widely used in distributed fiber-optic temperature sensing to detect Stokes and Anti-Stokes signal light separately. A built-in constant-temperature, constant-voltage controller keeps the APD detector chip in a constant operating state, providing low temperature drift and low noise. For weak signals, multistage amplification and noise-suppression techniques provide high-quality output and improve the system signal-to-noise ratio. High-precision driver and logic-control circuitry are built in, and operating parameters can be configured through a serial port and PC software.
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Overview
Specifications
| Parameter | Value |
|---|---|
| APD Photodetector - Operating wavelength λ | Min ：900 nm； Max ：1700 nm |
| APD Photodetector - Responsivity R | Typical ：8.5 A/W； Max ：20 A/W |
| APD Photodetector-Avalanche Voltage V_BR | Min ：40 V； Max ：60 V |
| APD Photodetector - Dark Current I | Typical ：2； Max ：10 |
| APD Photodetector - Bandwidth BW | Typical ：150 MHz |
| APD Photodetector-Photocurrent Responsivity R | Typical ：100 mV/nA |
| WDM - Insertion loss IL | Max ：1.2 dB |
| WDM - 1460/1550+1660 Isolation ISO | Min ：60 dB |
| WDM - 1660/1550+1450 Isolation ISO | Min ：60 dB |
| WDM - Insertion loss Temperature Stability ΔIL | Max ：0.005 dB/°C |
| WDM - Wavelength Stability Δλ2 | Max ：0.003 nm/°C |
| WDM - Return loss RL | Min ：45 dB |
| WDM - Power handling capacity P | Max ：500 mW |
| WDM - Operating wavelength λ | 1450 & 1550 & 1660 |
| WDM - Wavelength band Range Δλ1 | 1443-1457 & 1553-1557 & 1645-1685 |
| Structure Dimensions [Modular ； Dimensions Customizable] | 135 mm × 128 mm × 20 mm |
| Output Pigtail type [Modular] | SM-28e and MM-62.5/125; FC/APC |
| Communication Interface Type [Modular] | SMA |
| Supply voltage [Modular] | DC +5V/GND |
| Electrical power consumption [Modular] | ≤20 W |
Applications
Key Features
Datasheet
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Supplier Information
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