APT’ FWDM devices are based on Thin-Film Technology and All-glass packaged and epoxy free on optical path platform, keeping the device in compact size and excellent performance. Channels comply with ITU grid.
APT’ FWDM devices are based on Thin-Film Technology and All-glass packaged and epoxy free on optical path platform, keeping the device in compact size and excellent performance. Channels comply with ITU grid.




| Parameters | Specifications | Unit | |||
| Operating Wavelength Range | FWDM4/35 | FWDM5/34 | FWDM34/5 | nm | |
| Pass Band Wavelength Range | 1480~1500 | 1540~1560 | 1260~1360&1480~1500 | nm | |
| Reflection Band 1 Wavelength Range | 1260~1360 | 1260~1360 | 1540~1560 | nm | |
| Reflection Band 2 Wavelength Range | 1540~1560 | 1480~1500 | 1540~1560 | nm | |
| Insertion Loss | Pass Channel | ≤0.6 | dB | ||
| Reflect Channel | ≤0.3 | dB | |||
| Service interface type | Pass Channel | ≥25 | dB | ||
| Reflect Channel | ≥15 | dB | |||
| Polarization Dependent Loss | ≤0.20 | dB | |||
| Directivity | ≥50 | dB | |||
| Return Loss | ≥45 | dB | |||
| Temperature Dependent | ≤0.003 | dB/°C | |||
| Polarization Mode Dispersion | ≤0.10 | ps | |||
| Power Handling | 300 | mW | |||
| Connector Type | None | ||||
| Fiber Type | G657 A1 | ||||
| Fiber Mark | Com(Black), Pass&Reflect(None) | ||||
| Pigtail Type | 250μm bare fiber | ||||
| Fiber Length | 1.5±0.05 | m | |||
| Operating Temperature | -30 ~ 85 | °C | |||
| Storage Temperature | -40 ~ 85 | °C | |||
| Package Type | Glass Tube | ||||
| Package size | Φ4.0×26 | mm | |||