High Extinction Ratio Closed-Loop Fiber Optic Gyroscope Polarization-Maintaining Fibre Coil
Optimized for φ50 FOG assemblies, this coil offers a tightly controlled insertion loss of ≤0.2 dB. The multi-pole winding technique ensures temperature resilience, with zero bias peak-to-peak values remaining below 1.5°/h across the full -45°C to 80°C range. The 260m fiber length is precisely controlled within a ±5m tolerance to meet specific gyroscope sensitivity requirements.
Primarily used in closed-loop fiber optic gyroscopes with a diameter of approximately 50mm.
This polarization-maintaining fiber coil utilizes multi-pole symmetric winding technology with 135μm thin diameter optical fibers and UV-cured adhesive. The design delivers exceptional temperature and vibration performance while enabling mass production with consistent quality.
| Feature | Unit | Specification |
|---|---|---|
| Length | M | 260±5 |
| Optical Fiber | / | 80/135μm Optical Fiber |
| Layers | layer | 36 |
| Crosstalk | dB | ≤-22 |
| Full Temperature Crosstalk | dB | ≤-20 |
| Insertion Loss | dB | ≤0.2 |
| Constant Temperature Bias Stability (10s Smoothing) | °/h | ≤0.3 |
| Full Temperature Zero Bias Peak-to-Peak (10s Smoothing) | °/h | ≤1.5 |
| Temperature Range | °C | -45-80 |
| Temperature Rate of Change | °C/min | 1 |
| Geometric Dimensions | / | 29.0mm(ID) * 39.0mm(OD) * 9.2mm(H) |
Geometric dimensions, fiber length, and performance specifications can be customized according to specific application requirements.
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