Northrop Grumman Guidance and Electronics Company, Inc.

Northrop Grumman Guidance and Electronic Corporation, Inc.

Northrop Grumman Systems Corporation

Kenneth D Marino

Daniel A Tazartes

A gyroscope having photonic crystals for sensing rotation uses the Sagnac effect to determine angular motion. The gyroscope comprises a photonic crystal capable of guiding counter-propagating light beams in a closed path. A light source, coupling, and detection apparatus permits detection of phase changes between the counter-propagating beams, thereby permitting measurement of angular rotation. The photonic crystal comprises a periodic structure of pillars and voids which creates a photonic bandgap waveguide within which light waves in the proper wavelength range propagate with low loss.

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Brentwood, CA, United States of America

Kenneth D Marino