Fiber optic gyroscope ( fog ) is an advanced instrument to measure the angle velocity of rotation body . it realizes the measurement of optical sagnac effect using solid all - fiber structure . it overcomes mechanical - electrical gyro ' s reduction of dynamic performance and life - span caused by the structure or the requirement of high rotation rate mass , and the laser gyro ' s fabrication technology complication and high cost caused by the rigid requirement of optical circuit resonation 光纤陀螺是一种先进的测量载体绝对角速度的仪表，它利用固态的全光纤结构和sagnac效应来实现测量，克服了机电陀螺在构造上需要一定的高速度旋转质量，导致动态性能及寿命的降低，或者环形激光陀螺因谐振要求过于苛刻，使工艺复杂性及成本过高等一系列缺点，从而成为当今最具有竞争性的新型陀螺。
