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Limits imposed by nonlinear coupling on rotation sensitivity of a semiconductor ring laser gyroscope
, A. Syed, J. Nayak
Published in OSA - The Optical Society
Volume: 55
Issue: 19
Pages: 5187 - 5191
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 108 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.
About the journal
JournalData powered by TypesetApplied Optics
PublisherData powered by TypesetOSA - The Optical Society
Impact Factor1.230
Citation Styleunsrt
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