Ultra-Fine 850nm Panda Polarization-Maintaining Fiber

Ultra-Fine 850nm Panda Polarization-Maintaining Fiber For Precision Applications

Our new PM85G-40-U08-RI — an ultra-fine 850 nm Panda-type polarization-maintaining (PM) fiber designed for high-precision optical systems. This customized PM fiber delivers superior polarization performance, excellent bending resistance, and long-term stability, making it ideal for demanding environments and compact photonic assemblies.

Key Applications

Fiber Optic Gyroscopes (FOG)

Fused-Tapered PM Couplers

Polarization-Sensitive Devices

Fiber-Optic Polarization Sensors

Product Advantages

High Consistency: Excellent batch-to-batch and geometric uniformity ensures reliable integration.

Superior Bending Performance: Maintains optical stability even in tightly coiled or compact layouts.

Wide Temperature Adaptability: Reliable operation from -50°C to +105°C, ensuring stability across extreme conditions.

Outstanding Reliability: Proven long-term performance in precision sensing and navigation systems.

Technical Specifications

Operating Wavelength: 850 nm

Cutoff Wavelength: 650–800 nm

Mode Field Diameter: 3.0 ± 0.5 µm

Attenuation: ≤ 10.0 dB/km

Beat Length: ≤ 2.0 mm

Typical Crosstalk: ≤ -25 dB/100 m

Cladding Diameter: 40.0 ± 1.0 µm

Coating Diameter: 80.0 ± 5.0 µm

Coating Type: Dual-layer UV-cured acrylate

Operating Temperature: -50°C to +105°C

With its compact structure and superior polarization-maintaining capability, the PM85G-40-U08-RI represents YOEC’s continuous innovation in specialty fiber technology — providing a dependable solution for next-generation optical sensing, navigation, and photonics applications.