PM Tap Photodetector 1260nm 1620nm In Line Power Monitoring Module For DWDM / ROADM
PM Tap Photodetector (1260–1620 Nm) — In-Line Power Monitoring Module For DWDM, ROADM, OLP, And Fiber Amplifiers
The PM Tap Photo Detector is a highly integrated device designed for in-line power monitoring applications within Polarization-Maintaining (PM) fiber systems. It integrates a precision tap-splitting structure and a high-sensitivity photodiode directly into the PM link. This design allows for the extraction of a small portion of optical power from the main link for real-time detection—while preserving the polarization characteristics—and minimizes any impact on the main link's transmission performance. The product supports a wide operating wavelength range of 1260 to 1620 nm; commonly available tap ratios include 1:99, 3:97, and 5:95, facilitating selection based on the specific requirements of different systems regarding monitoring accuracy and link loss tolerance.
| Parameter | Unit | Specification | ||
|---|---|---|---|---|
| Wavelength Range | nm | 1260~1620 | ||
| Tap ratio | % | 1:99 | 3:97 | 5:95 |
| Maximum Input Power | dBm | 23 | 18 | 16 |
| Responsibility | mA/W | 8~12 | 23~38 | 40~60 |
| Insertion Loss(Excluding Connectors) | dB | 0.35 | 0.4 | 0.5 |
| Extinction Ratio@ 23℃ | dB | ≥18 | ||
| Wavelength Dependent Loss | dB | ≤0.3 | ||
| Return Loss | dB | ≥45 | ||
| PD bias voltage | V | -5 | ||
| Reverse Voltage | V | ≤20 | ||
| Dark Current | nA | ＜0.5(@25℃),＜2(@70℃) | ||
| PD cut-off frequency(RL=50Ω, -3dB,-5V) | pF | ＞1 | ||
| Connector | dB | FC/APC | ||
| Fiber Type(Panda Fiber) | dB | Corning PM1310 | ||
| Operating Temperature | ºC | -5 to 65 | ||
| Storage Temperature Range | ºC | -40 to 85 | ||
*Above specifications are for devices without the connectors.
*For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower.
*The PM fiber and the connector key are aligned to the slow axis, fast axis is blocked.
- Supports a wide operating wavelength range of 1260–1620 nm
- Integrates both tap-splitting and photodetection functions
- Supports common tap ratios: 1:99, 3:97, and 5:95
- Low insertion loss in the main link (typically ~0.35–0.5 dB)
- Built-in high-sensitivity photodiode featuring fast response and wide bandwidth
- Low dark current, ensuring a superior signal-to-noise ratio (SNR) for low-power monitoring
- Utilizes Polarization-Maintaining (PM) Panda Fiber; default keying aligns with the slow axis
- Supports customization of pigtail length, jacket dimensions, and connector types
- Operating temperature range: -5°C to 65°C; Storage temperature range: -40°C to 85°C
- Suitable for high-density module integration and closed-loop power control systems
- DWDM channel power monitoring
- OLP (Optical Line Protection) monitoring
- ROADM module power balancing monitoring
- Fiber amplifier gain monitoring
- Fiber laser systems
- Coherent communication systems
- OEM optical monitoring modules
- Laboratory and test platforms
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