Design method of optical-fiber sensing ring being suitable for small-size closed-loop optical-fiber gyroscope

• Main Authors: OU HENG, ZHANG TIANQI, WU JUNWEI, YU XIAOZHI, WANG CHANGWEI, ZHANG HONGXIAN, XU LEI, WU YANJI, HE XINKE, CHENG XIANYING, LIU SHURONG, LI FUSHENG
• Format: Patent
• Language: English
• Published: 13.01.2016
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention belongs to the technical field of optical-fiber sensing rings and particularly relates to a design method of an optical-fiber sensing ring being suitable for a small-size closed-loop optical-fiber gyroscope. By means of optimization of design of the optical-fiber ring and employment of an intersected twining manner, distribution of optical fibers provided by different fiber supplying wheels in each layer is achieved. Meanwhile, different pad paper is used in different layers, so that nonreciprocal phase error is reduced under the condition of dissatisfaction of four-grade symmetry. A small-size optical-fiber sensing ring designed through the method, compared with a small-size optical-fiber sensing ring formed by four grade winding in the prior art, can satisfy an application of the small-size closed-loop optical-fiber gyroscope better. The optical-fiber sensing ring is more practical and simple.