A compact, low loss and polarization insensitive fiber-optic gyroscope transceiver module configuration based on free-optic integration

A compact, low loss and polarization insensitive transceiver module configuration based on free-space integration which is applicable to a high sensitive and miniature fiber-optic gyroscope is proposed. The basic idea of this module is to construct a double power output configuration so that both of the powers of the two split orthogonal polarized components of the source propagating along different paths can be utilized fully which thus improves the signal-to-noise (SNR). In addition, the signal intensity received by the detector is insensitive to the source polarization and is independent of the power ratio of the two split orthogonal polarized beams, which relaxes the polarization specification of source and simplifies the integration processes of transceiver module. (C) 2010 Elsevier GmbH. All rights reserved.OpticsSCI(E)EI0ARTICLE191689-169112