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微型光学陀螺仪是基于Ｓａｇｎａｃ效应，采用先进的集成光学技术研制的新型光学陀螺仪。研制微型光学陀螺仪的关键在于用频率调制来实现频率伺服，对主要误差进行有效抑制，以及实现高精度Ｓａｇｎａｃ频差测量。声光移频器是解决这一系列技术关键的一个核心器件。针对微型光学陀螺仪中对声光移频器所提出的百万分之一相对频移精度，调制带宽不低于１０ＭＨｚ，有效声功率大于１８０ｍＷ的特殊要求，对微型光学陀螺仪的核心器件——声光移频器进行了理论分析与设计，研究了它在实现上的主要技术难点，提出采用直接数字频率合成技术来代替一般的压控振荡器激励方案
Micro-optical gyroscope is based on the Sagnac effect, the use of advanced integrated optical technology developed by the new optical gyroscope. The key to the development of miniature optical gyroscope is to use frequency modulation to realize frequency servo, to effectively suppress the main error, and to achieve high-precision Sagnac frequency difference measurement. Acousto-optic frequency shifter is the key to solve this series of key technologies. Aiming at the special requirements of the acousto-optic frequency shifter proposed in the micro-optical gyroscope, such as 1 millionth of the relative frequency shift precision, the modulation bandwidth of not less than 10MHz and the effective acoustic power greater than 180mW, - Acousto-optic shifter theoretical analysis and design, research on its implementation of the main technical difficulties, the proposed direct digital frequency synthesis technology to replace the general VCO incentive scheme