Hybrid integration of fiber optic gyroscopes operating in harsh environments

The development of the first fully integrated 4-channel fiber optic gyroscope "optical engine" is presented. The optical engine integrates the equivalent of more than 24 discrete optical components into a hybrid chip with a size of 67x11x3 mm. After the optical engine is spliced to fiber sensor coils, the performance of the gyroscope has been benchmarked to be equivalent to the performance of a navigation grade gyroscope fabricated with discrete components.