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在掺铒光纤放大器技术上发展起来的1.55μm宽带超荧光光纤光源(SFS)具有相干长度短、输出功率大、温度稳定性好、对紫外线辐射不敏感和寿命长等优点,是惯性级和精密级光纤陀螺的理想光源。概述了1.55μm高精度光纤陀螺的研制现状,同时,对 SFS 的技术优势、最佳结构设计进行了探讨。最后对采用 SFS的光纤陀螺的噪声特性进行了研究,并提出了改善光路系统信噪比和抑制光源强度噪声的技术措施。
The 1.55μm wideband superfluorescent fiber light source (SFS) developed in the erbium-doped fiber amplifier technology has the advantages of short coherence length, large output power, good temperature stability, insensitivity to UV radiation and long service life. It is an inertial grade and precision Ideal fiber optic gyroscope light source. The development status of 1.55μm high precision fiber optic gyroscope is summarized. At the same time, the technical advantages of SFS and the optimal structure design are discussed. Finally, the noise characteristics of the optical fiber gyroscope using SFS are studied, and the technical measures to improve the signal to noise ratio of the optical system and suppress the noise intensity of the light source are proposed.