Dual-channel APD photodetector for DTS (DTS-APD2)
The DTS-APD2 integrates 2 groups of single-mode/multimode WDM and APD detectors for distributed fiber temperature sensing, separately detecting Stokes and Anti-Stokes signals. Built-in constant-temperature and constant-voltage control keeps APD chips stable, with low temperature drift and noise. Multistage amplification and noise suppression improve weak-signal output quality and system signal-to-noise ratio. A single DC+5V supply powers the module. Internal precision drive and logic circuits allow parameter configuration through a serial port and host software.
Specification Snapshot
Operating Wavelength [APD]
min:900 nm; max:1700 nm
Responsivity [APD]
typical:8.5 A/W; max:20 A/W
Dark Current [APD]
typical:2; max:10
Bandwidth [APD]
typical:150 MHz
Insertion Loss [WDM]
max:1.2 dB
Return Loss [WDM]
min:45 dB
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Overview
The DTS-APD2 integrates 2 groups of single-mode/multimode WDM and APD detectors for distributed fiber temperature sensing, separately detecting Stokes and Anti-Stokes signals. Built-in constant-temperature and constant-voltage control keeps APD chips stable, with low temperature drift and noise. Multistage amplification and noise suppression improve weak-signal output quality and system signal-to-noise ratio. A single DC+5V supply powers the module. Internal precision drive and logic circuits allow parameter configuration through a serial port and host software.
Specifications
| Parameter | Value |
|---|---|
| Operating Wavelength [APD] | min:900 nm; max:1700 nm |
| Responsivity [APD] | typical:8.5 A/W; max:20 A/W |
| Avalanche voltage V_BR [APD] | min:40 V; max:60 V |
| Dark Current [APD] | typical:2; max:10 |
| Bandwidth [APD] | typical:150 MHz |
| Photocurrent responsivity [APD] | typical:100 mV/nA |
| Operating Wavelength [WDM] | 1450 & 1550 & 1660 |
| Wavelength Band Range [WDM] | 1443-1457 & 1553-1557 & 1645-1685 |
| Insertion Loss [WDM] | max:1.2 dB |
| 1460/1550+1660 isolation [WDM] | min:60 dB |
| 1660/1550+1450 isolation [WDM] | min:60 dB |
| Insertion loss temperature stability [WDM] | max:0.005 dB/℃ |
| Wavelength Stability [WDM] | max:0.003 nm/℃ |
| Return Loss [WDM] | min:45 dB |
| Power handling capacity [WDM] | max:500 mW |
Datasheet
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Supplier Information
Shenzhen OE PHOTONICS is a high-tech company specializing in the R&D, production, and sales of advanced optical waveguide chip components, optical devices, and modules. Headquartered in Shenzhen, it has established an R&D center in Shanghai and a production base in Ganzhou, Jiangxi. The company currently has nearly 200 R&D and production personnel.
The company's main products include: multifunctional optical waveguide chips and components (standard/custom), silicon photonics coupling fan-out components (waveguide/fiber array), optical coupler series (Splitter/Tap Coupler), optical attenuator series, optical switch and matrix series, wavelength division multiplexing (WDM) series, tunable optical filters and spectral analysis instruments series, etc. Products cover various fiber application types such as conventional, polarization-maintaining, single-mode, multi-mode, and high-power; and cover various wavelength ranges such as ultraviolet, visible, and infrared.
The optical waveguide chips and components, optical devices, and modules developed by OE PHOTONICS are widely used in emerging fields such as communication, sensing, laser, biomedical, autonomous driving, image display, and instrumentation. The company not only provides high-quality standardized products but also offers innovative advanced customized technical solutions. The company has passed ISO9001 quality system certification, and related products have passed ROHS, CE, and Tel certification.
OE PHOTONICS adheres to the corporate culture of innovation, quality, hard work, win-win, and excellence, and is committed to becoming a globally leading supplier of optical device/module products and solutions.
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