As a core bare device based on Thin-Film Filter (TFF) technology, this 3-port component enables precise wavelength separation in Coarse Wavelength Division Multiplexing (CWDM) systems. Central wavelength ranging from 1270 to1611nm, it achieves typical 0.3dB insertion loss at Reflection. The device design supports flexible integration into customized optical path configurations, particularly suitable for OEM equipment manufacturers requiring protocol-transparent solutions in metro access networks, PON system, FTTx network and Add/drop channels.
| Parameter | Unit | Specification |
| Channel Center Wavelength | nm | 1270,1290…1610 or 1271, 1291...1611 |
| Channel Spacing | nm | 20 |
| Bandwidth@-0.5dB | nm | ≥13 (λc±6.5nm) |
| Port of Transmission | Transmission Insertion Loss | dB | ≤0.6 (Typical 0.4) |
| (Port1=＞Port2) | Adjacent Channel Isolation | dB | >30 |
| Non-Adjacent Channel Isolation | dB | >45 |
| Pass Band Ripple | dB | ≤0.3 |
| PDL | dB | ≤0.15 |
| Port of Reflection | Reflection Insertion Loss | dB | ≤0.5 (Typical 0.3) |
| (Port1=＞Port3) | PDL | dB | ≤0.15 |
| Isolation of Reflection @ Pass Band | dB | ≥13 |
| Insertion Loss Temperature Stability | dB /℃ | ≤0.005 |
| Wavelength Temperature Stability | nm /℃ | ≤0.003 |
| Return Loss | dB | ≥45 |
| Polarization Mode Dispersion | Ps | ≤0.10 |
| Directivity | dB | ≥45 |
| Power Handling | mW | 300 |
| Operating Temperature | ℃ | -40～+85 |
| Storage Temperature | ℃ | -40~+85 |
| Fiber Type | -- | Corning SMF-28 Ultra, G657A1/A2 or customer specified |
| Pigtail type | -- | Ø250μm Bare Fiber or Ø0.9mm loose tube |
| Fiber length | m | 1.0, or customer specified |
| Package Dimension | mm | Steel Tube: |
| Ø5.5x34 for 250μm bare fiber, |
| Ø5.5x38 for Ø0.9mm loose tube; |
| Glass Tube: |
| Ø4.0x26 for Ø250μm bare fiber, |
| Ø3.2x26 for Ø250μm bare fiber; |
Note:
Insertion loss excluding connector loss. With connectors add 0.3dB;
Connectors can be customized on request.
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