Some conclusions about the length and the splice angle of the depolarizer , the spectrum of the light source and the extinction ratio of the polarizer are obtained . associated with the polarization in the sensing coil and the principle of the pmd analyzer , one method to design the length of the lyot depolarizer has been put forward 首先,本文分析了lyot消偏器對完全偏振光與非完全偏振光的消偏作用,由此得出了關(guān)于lyot消偏器的長度和結(jié)合角、光源光譜以及與消偏器配合的起偏器消光比的一些結(jié)論。
In this paper , the polarization in the fiber - optic depolarized gyros has been analyzed . several aspects are under discussion , such as the polarization evolution in the depolarizer and the single - mode fiber sensing coil , the depolarization in the polarization - maintain fiber , the birefringence and coupling in the single - mode fiber , the nonreciprocal phase error and the output intensity . firstly , the depolarization effect of the lyot depolarizer to the polarized light and the partially polarized light has been analyzed 本文對消偏光纖陀螺中的偏振特性進行了分析,包括單模光纖環(huán)和消偏器中的偏振態(tài)演變、保偏光纖的消偏性能、單模光纖環(huán)的雙折射和耦合、輸出光強和非互易性相位誤差與偏振態(tài)的關(guān)系。