Abstract

The sensitivity of a monolithically integrated semiconductor ring laser gyro is severely limited by the high value of the lock-in threshold. In this work, we calculate the lock-in threshold using perturbation theory and coupled mode theory analysis. It is shown that gyro sensitivity is limited to an input rotation rate of ${10}^8$ deg / h due to nonlinear coupling between the countertraveling modes. This coupling arises due to the backreflection of modes from moving index gratings, induced by rotation. Lock-in threshold is directly proportional to the strength of nonlinear coupling and spatial overlap of the modes’ energy densities with periodic index perturbations.

© 2016 Optical Society of America

Lock-in range in a semiconductor ring laser gyroscope

E. G. Lariontsev
Appl. Opt. 61(36) 10629-10632 (2022)

Analysis of a ring-laser gyroscope with intracavity phase-conjugate coupling

Michael L. Dennis and Jean-Claude M. Diels
Appl. Opt. 33(9) 1659-1672 (1994)

Zero lock-in implementation by phase wrapping/unwrapping in a ring laser gyroscope

Jae-Cheul Lee, Hyun-Ju Cho, and Ho-Soon Yang
Appl. Opt. 60(34) 10529-10538 (2021)

Photonic technologies for angular velocity sensing

Caterina Ciminelli, Francesco Dell’Olio, Carlo E. Campanella, and Mario N. Armenise
Adv. Opt. Photon. 2(3) 370-404 (2010)

Self-beating resonant optical gyroscope with a “reflector”: the possibility of high sensitivities at reduced costs

Sumukh Nandan R, Saroj Poudyal, Shailesh Srivastava, and R. Gowrishankar
Appl. Opt. 58(7) 1699-1706 (2019)