LUNA FC SERIES Fibre Gyro Coils
LUNA FC series coils are high performance fibre gyro coils constructed with specialised potting adhesive, winding techniques and process controls, and available with extensive test data.
- Low polarization crosstalk (PM)
- Low PDL and PMD (SM)
- Thermally and vibrationally stable
- Different winding patterns available
- Advanced process controls
LUNA FC series of fibre gyro coils are available with lengths of 50m to 5km and diameters of 15mm to 120mm. Coils can be made with many different types of SM and PM fibres. The frameless coils are constructed with proprietary potting adhesives to ensure reliability. Coil patterns available include quadrupole and octupole patterns that minimize the Shupe effect and consequent performance degradation of Sagnac gyros under temperature-varying conditions.
Additional Shupe effect mitigation is available to further improve the temperature and vibration performance of the coils. Moreover, mounting service is available upon request to maintain the coil performance for high demanding applications.
The FC series is available with complete test data including polarization cross-talk vs. distance for PM fiber coils; and PDL vs. temperature and PMD vs. temperature for SM fibre coils.
| Operating wavelength | 840, 1060, 1310, or 1550nm |
|---|---|
| Winding induced IL | < 0.2 dB/km |
| PER | > 24 dB over full temperature range |
| PER temperature variation2 (−40 to +80°C) |
±2 dB |
| Max. polarization crosstalk2 |
< −50 dB at 25°C < −45 dB over full temperature range |
|
Number of polarization crosstalk peaks above −55 dB2 |
<15 at 25°C <30 over full temperature range |
| Average polarization crosstalk2 |
< −68 dB at 25°C < −55 dB over full temperature range |
| Max. bias error3 |
No Shupe mitigation: < 2 degrees/hour typical peak-to-peak |
LUNA FC Coils datasheet | Photo | Product | SKU | |
|---|---|---|---|
 | LUNA TDC SERIES Time Delay Coils | - | > |