Gezhi Photonics Polarization Maintaining Dense Wavelength Division Multiplexer series is designed and manufactured to international standards. The PM DWDM preserves the polarization of optical signals using environmentally stable Thin Film Filters and advanced packaging technology to achieve wide passband, low insertion loss, high channel isolation, excellent environmental stability and high extinction ratio. These devices can be used individually for single channel add/drop functions or in DWDM systems and sensor systems.
| Parameters | Unit | Values | |
|---|---|---|---|
| Channel Space | Ghz | 100 | 200 | |
| Center Wavelength | nm | ITU Grid | |
| Center Wavelength Accuracy | nm | ±0.05 | ±0.1 | |
| Channel Pass band (@-0.5dB) | nm | 0.22 | 0.5 | |
| Max. Insertion Loss at 23℃ | Transmission Channel | dB | 1.0 | 0.9 |
| Reflection Channel | dB | 0.4 | 0.4 | |
| Min. Isolation at 23℃ | Adjacent Channel | dB | 30 | 30 |
| Non-adjacent Channel | dB | 40 | 40 | |
| Reflection Channel | dB | 12 | 12 | |
| Max. Channel Flatness | dB | 0.3 | |
| Min. Extinction Ratio at 23℃ | dB | 20 | |
| Max. Wavelength Thermal Stability | nm/℃ | 0.003 | |
| Max. Insertion Loss Thermal Stability | dB/℃ | 0.005 | |
| Min. Return Loss at 23℃ | dB | 50 | |
| Max. Power Handling (CW) | mW | 500 | |
| Fiber Type | - | PM Panda fiber | |
| Operating Temperature | ℃ | 0~+70 | |
| Storage Temperature | ℃ | -40~+85 |
With connector, IL is 0.3dB higher, RL is 5dB lower, and ER is 2dB lower.
Connector key is aligned to slow axis.