Fibercore PM Gyro HB800G 20 METERS

The Fibercore PM Gyro HB800G is a 20-meter polarization-maintaining optical fiber engineered for Fiber Optic Gyroscope (FOG) applications. Built on a 'Bow Tie' Stress Applying Part (SAP) design, it achieves birefringence to maintain exceptional Polarization Extinction Ratio (PER) across demanding temperature ranges. Optimized for 830 nm operation, this fiber delivers superior signal stability and polarization-holding performance in precision navigation and inertial measurement systems.

Technical Specifications

• Operating Wavelength: 830 nm


• Polarization Extinction Ratio: >30 dB (-55°C to +85°C); >28 dB at -60°C


• Beat Length (633 nm): ≤1.5 mm (standard); ≤1.0 mm (Short Beat-Length variants)


• Mode Field Diameter (830 nm): 3.7–4.9 µm


• Numerical Aperture: 0.14–0.18


• Cut-Off Wavelength: 660–800 nm


• Attenuation: ≤5 dB/km @ 830 nm


• Cladding Diameter: 80 ± 1 µm


• Core-Cladding Concentricity: ≤1.0 µm


• Coating Diameter: 170 ± 5 µm or 165 ± 5 µm


• Coating Type: Dual Layer Acrylate


• Operating Temperature Range: -55°C to +85°C


• Proof Test: 1 (100 kpsi) or 2 (200 kpsi), higher upon request

Key Features

• 'Bow Tie' birefringent design minimizes polarization cross-talk


• Maintains PER >30 dB at extreme low temperatures


• Dual-layer acrylate coating provides ruggedness and static fatigue resistance


• Optical mode stripping and easy coating removal


• High NA variants available for reduced macro and micro bend losses in compact coil geometries


• Short Beat-Length variants deliver maximum PER performance


• Radiation-tolerant variants qualified for space missions and radiation environments

Typical Applications

• Ring laser gyroscope and fiber optic gyroscope systems


• High-accuracy inertial navigation platforms


• Space-qualified navigation instruments


• Low-temperature and harsh-environment sensor deployments

Compatibility & Integration The HB800G accommodates standard single-mode connector interfaces and integrates directly into FOG coil assemblies. Custom proof test levels and specialized variants - including high-NA and radiation-tolerant configurations - are available to meet specific mission requirements.