Lead and lag fibers are used to adapt the meter to the target. The use of a launch fiber protects the adapters on the meter and evaluates the start or end events.

A suite of advanced polarization test instruments specially designed for testing the quality of fiber coils ensures the consistent production of high performance coils. GPCs' PM coils can be wound with different winding patterns such as quadrupole, octupole, or other types to minimize the Shupe effect, which degrades the performance of a fiber gyro under temperature-varying conditions.