WDM Filter
WDM Filters are bi-directional component optimized for a variety of applications including ONU and OLT equipment units. They utilize high performance thin film interference filters to provide exceptional band pass performance over extended outdoor operating conditions. Our WDM filters feature low insertion loss, high transmission and reflection channel isolation, bi-directional operation, an epoxy-free optical path, and are available in both controlled and outdoor environment versions. More importantly, these products offer high isolation on the return channel which is critical for video insertion and demultiplexing. We also offer custom packaging upon request.
Following are two types of the WDM Filters devices we provide:
Singlemode WDM Filter - This device separates/combines two wavelength windows, one is around 1310nm and the other is around 1550nm.
The bandwidth of the 1310nm and 1550nm channel can be ±40nm, filtered out from 1270nm to 1350nm and 1510nm to 1590nm wavelength range.
Multimode WDM Filter -This device separates / combines two wavelength windows, one is around 850nm and the other is around 1310nm.
The bandwidth of the 850nm and 1310nm channel can be ±50nm, filtered out from 800nm to 900nm and 1260nm to 1360nm wavelength range.
Features:
- Environmentally stable
- Wide band pass
- Low insert loss
- Low loss and Low cross-talk
- Low Polarization dependent loss
- Optical path epoxy free
Applications:
- Telecommunications
- Local area network
- Fiber optic sensors
- Test instruments
- RFTS & CATV & FTTH
Specifications: (FOR Singlemode WDM Filter)
| ITEM | VALUES |
|---|---|
| Operation Wavelength (nm) | 1270 ~ 1350 & 1510 ~ 1590 or Customer Specify |
| Insertion Loss, dB/Typical | 0.5 |
| Insertion Loss, dB/Max | 0.7 |
| Pass band Ripple, dB | ≤0.3 |
| Isolation, dB | ≥15 (reflect channel) ≥40 (pass channel) |
| Optical Return Loss | ≥45 |
| Directivity, dB | ≥50 |
| Thermal Stability, dB / °C | ≤0.005 |
| Polarization Dependent Loss, dB | ≤0.05 |
| Polarization Mode Dispersion, ps | ≤0.1 |
| Max. Optical Power, mW | 300 |
| Max. Tensile Load, N | 5 |
| Storage Temperature, °C | -40°C ~ 85°C |
| Operation Temperature, °C | 0°C ~ 65°C |
| Package Size, mm | Ø5.5 x 34 mm for coated fiber (250µm) Ø5.5 x 39 mm for loose tube cable (900µm) |
Main Products:
Fiber Adapter, Fiber Connector, Fiber Optic Attenuator, Fiber Optic Coupler, Fiber Patch Cord, Optical Module, CWDM Module, DWDM, WDM Filter, Optical Isolator, Fiber Circulator, Optical Switch, PLC Splitter, Fiber Collimator, Ceramic Ferrule, Fan Out Cable, Mode Condition Cable, Optical Filter
