光纤陀螺用收发一体模块的研究

Study on Integrative Transceiver Module for Fiber Optical Gyro

针对干涉型光纤陀螺,研究了一种新的收发一体模块,从对SLD光源建模入手,根据该模型,设计了小型化的光学系统。在这个系统中,通过对光源发出的光进行扩束并准直来提高耦合效率,最后,用Zemax软件进行了仿真,分别对光线传播的轨迹及其能量进行了计算,仿真的结果证明了设计的优越性。这种收发模块采用与偏振无关技术,体积小、可靠性高。与应用较为广泛的混偏技术相比,可以有效改善温度变化、振动等因素对光纤陀螺系统精度的影响,从而提高光纤陀螺的整体性能。

A novel integrative transceiver module was studied for Interferometric Fiber Optic Gyroscope（IFOG）.The model of Super Luminance Diodes（SLD） source was built up,and based on which a compact optical system was designed.In this system,the beam from light source was coupled into collimator by enlarging its radius.Then,simulation was made by using the software of Zemax.The propagation and power of light beam were calculated out.The result of simulation proved the superiority of the design.This transceiver module adopts the full polarization-preserving technique.It has the advantages of small volume and high reliability.Compared with the widely-used depolarization technique,the effect of temperature variation and vibration on IFOG precision will be reduced,hence,the whole performance of IFOG can be promoted.