公开(公告)号：WO2003060427A1

公开(公告)日：2003-07-24

申请号：PCT/US2002/040251

申请日：2002-12-16

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： SZAFRANIEC, Bogdan ,  KALISZEK, Andrew ,  LANGE, Charles

IPC: G01C19/72

CPC classification number: G01C19/721

Abstract: A fiber optic gyroscope (FOG) including a depolarizer having substantially equal first and second fiber segments of polarization maintaining (PM) fiber coupled to a single mode (SM) fiber loop. The first PM fiber segment includes sections of fiber connected together via a splice having an angle from about 35 0 to 55 0 between major axes of polarization of the sections which it connects. Similarly, the second PM fiber segment includes sections of fiber connected together via a splice having an angle from about 35 0 to 55 0 between major axes of polarization of the sections which it connects. The length of each fiber section is chosen to maintain the thermal and mechanical symmetry of the SM fiber loop.

Abstract translation: 一种光纤陀螺仪FOG，其包括具有基本上相同的第一和第二光纤段的去偏振器，其保持PM光纤耦合到单模SM光纤回路。 第一PM纤维段包括通过接头连接在一起的纤维部分，该接头在其连接的部分的主要偏振极轴之间具有大约350至550°的角度。 类似地，第二PM纤维段包括通过接头连接在一起的纤维部分，该接头在其连接的部分的主要极化轴之间具有大约350至550°的角度。 选择每个纤维部分的长度以保持SM纤维环的热和机械对称性。