Polarization Maintaining PM Isolator 1310nm 1480nm 1550nm For EDFA / Fiber Lasers

This PM Isolator is a high-performance passive optical component designed specifically for Polarization-Maintaining (PM) fiber systems. Its primary function is to prevent back-reflected light from returning to the light source or system, thereby minimizing feedback interference and safeguarding the stable operation of core components. Compared to standard optical isolators, this product utilizes a "Panda" PM fiber structure; while ensuring unidirectional transmission, it also excels at preserving the polarization state of the optical signal, making it ideally suited for applications requiring high polarization fidelity and system stability. According to product specifications, this device operates stably across the 1310nm, 1480nm, and 1550nm wavelength bands and is available in both single-stage and dual-stage configurations, offering a balanced trade-off between isolation performance and insertion loss.

*Above specifications are for devices without the connectors.

*For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, and ER will be 2dB lower.

*The PM fiber and the connector key are aligned to the slow axis, fast axis is blocked

• Supports operating wavelengths of 1310nm, 1480nm, and 1550nm
• Available in Single-Stage or Dual-Stage configurations
• Typical Insertion Loss: ≤0.4dB (Single-Stage), ≤0.5dB (Dual-Stage)
• Typical Isolation: Up to 42dB (Single-Stage), up to 58dB (Dual-Stage)
• Extinction Ratio (ER): ≥25dB
• Return Loss: ≥55dB
• Supports Slow-Axis, Fast-Axis, or Dual-Axis designs
• Compact package size for easy system integration

• EDFA (Erbium-Doped Fiber Amplifiers)
• Fiber Laser Systems
• Fiber Sensing Systems
• Optical Measurement and Test Instrumentation
• Optical Communication Networks
• Coherent Optical Systems and Quantum Communication Platforms