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UT-King’s Filter Wavelength Division Multiplexer (FWDM) is extensively used in EDFA, Raman amplifiers, WDM networks and fiber optics instrumentation. The FWDM series is based on environmentally stable Thin Film Filters technology. The device combines or separates light at different wavelengths in a wide wavelength range. They offer very low insertion loss, low polarization dependence, high isolation and excellent environmental stability. High power handling capability can be achieved through unique pigtail processing and high quality AR coating.
| Parameter | Value |
| Operating Wavelength(nm) | 1310, 1490, 1550 |
| Operating Bandwidth(nm) | 1310±40,1490±40,1550±40, or customized |
| Pass/Reflection wavelength(nm) | On customer request |
| PD Responsibility (mA/mw) | ≥0.85(0.95 typical) |
| PD Dark current (nA) | ≤1.0 |
| Pass band Insertion Loss (dB) | ≤0.8(0.60 typical) |
| Reflection band Insertion Loss (dB) | ≤0.6(0.40 typical) |
| Pass band Isolation (dB) | ≥30 |
| Reflection band Isolation (dB) | ≥15 |
| Directivity (dB) | ≥55 |
| Return Loss (dB) | ≥50 |
| PDL (dB) | ≤0.1 |
| Insertion loss thermal stability (dB/°C) | ≤0.005 |
| Power handling (mw) | ≤500 |
| Operation Temperature (°C) | -5~+70 |
| Storage Temperature (°C) | -40~+85 |
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