This PM FWDM Device is a 3-port passive wavelength division multiplexing (WDM) component based on polarization-maintaining (PM) fiber. It is primarily designed for the multiplexing and demultiplexing of signals at different wavelengths within a single optical fiber, making it particularly suitable for the separation and combination of 1480nm pump light and 1535–1565nm signal light. The product utilizes Corning PM15-U25D polarization-maintaining fiber; its typical port configuration consists of COM, Pass, and Reflection ports, enabling effective wavelength management while maintaining excellent polarization stability. The standard package measures approximately Φ5.5 * L38mm; its compact structure facilitates easy integration into amplifier modules, WDM units, and various system chassis. Furthermore, the product covers an operating range of 1260–1620nm, complies with ITU-T G.694.2 and RoHS standards, and is well-suited for constructing high-performance polarization-maintaining optical links.

• 3-port polarization-maintaining filter-based WDM structure
• Suitable for multiplexing and demultiplexing 1480nm and 1535–1565nm signals
• Utilizes Corning PM15-U25D polarization-maintaining fiber
• Insertion loss: ≤0.8dB (Pass port), ≤0.6dB (Reflection port)
• Isolation: ≥25dB ​​(Pass port), ≥15dB (Reflection port)
• Extinction Ratio (ER): ~18dB; Return Loss (RL): ≥50dB
• Maximum optical power handling: ~300mW
• Compact package; standard dimensions: ~Φ5.5 * L38mm
• Compliant with ITU-T G.694.2 and RoHS standards

• EDFA (Erbium-Doped Fiber Amplifiers)
• Raman Amplifier Modules
• ROADM (Reconfigurable Optical Add-Drop Multiplexers)
• CATV Optical Transmission Systems
• CWDM Systems
• PON Access Networks
• Polarization-Maintaining Optical Test Platforms
• OEM Optical Communication Modules