PASSIVE RING RESONATOR GYROSCOPE

Abstract

A passive ring resonator gyroscope comprising a single piece body having an integral first and second resonator cavity. The first resonator cavity has a single frequency laser means with internal cavity mounted reflective surfaces to provide a single frequency light source to the second resonator cavity. The single frequency light source is sharply tuned. The second resonator cavity is a passive high Q evacuated cavity having a closed second optical path tuned to resonate at the single frequency light frequency of the first resonator cavity. A cavity servo means is provided for controlling the resonant frequency of the second resonator high Q cavity to simultaneously and substantially track the resonant frequency of the first resonator high Q cavity. An output servo means is provided for detecting the change in frequency of the single frequency light within the second resonator in response to said body rate input to the sensitive axis and for providing an output signal.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1VIRGIL E. SANDERS

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