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集成化已成为研制中、高精度大动态范围光纤陀螺的一个必然途径。文中报道了一种采用光纤滤波/双Y型集成光路和全数字处理的闭环光纤陀螺,其中光纤滤波/双Y型多功能集成光路是采用退火质子交换法(APE)在铌酸锂衬底上制作而成的,它包含了光纤陀螺所需的除光纤线圈以外的无源光学器件的全部功能:两个分光/合光器(耦合器)、两个宽带相位调制器(推挽工作)和一个高消光比的偏振器,测试结果表明,陀螺零偏稳定性优于1°/h。该陀螺结构紧凑、动态范围大、精度适中、成本低,特别适合于战术级的应用
Integration has become the development of high precision large dynamic range FOG an inevitable way. The paper reports a closed-loop FOG with fiber-optic filter / dual-Y integrated optical path and full digital processing. The optical fiber filter / dual Y-type integrated optical path is annealed by proton exchange (APE) on a lithium niobate substrate , Which contains all the functions of a passive optical device other than an optical fiber coil required for an FOG: two split / combiners (couplers), two wideband phase modulators (push-pull operation) and A high extinction ratio polarizer, the test results show that gyro zero bias stability better than 1 ° / h. The gyro has a compact structure, large dynamic range, moderate accuracy and low cost, and is especially suitable for tactical applications