A high sensitivity optical gyroscope based on slow light in coupled-resonator-induced transparency

We designed ring-in-ring planar resonator which is coupled with a straight waveguide to yield coupled-resonator-induced transparency (CRIT). The model shows an obvious effect which has a direct analogy with the phenomenon of the electromagnetically induced transparency in quantum systems. Based on this structure, a high sensitive optical gyroscope for measuring absolute rotation is proposed and analyzed. Its sensitivity scales directly with the group index whose can be reached to 10(2)-10(4) orders of magnitude by using proper parameters. (C) 2008 Elsevier B.V. All rights reserved.