The resolution of the laser interferometer is improved by using optical path difference doubling technique.
采用光程差放大技术，提高了干涉系统的分辨力。
Spectral resolution of optical fiber Fourier transform spectrometer depends on maximum optical path difference (OPD).
光纤傅里叶变换光谱仪的光谱分辨率是由最大光程差决定的。
The main polarization mode and coupling mode in PM fiber has some optical path difference because of internal birefringence.
保偏光纤内部的高双折射，使得其内部传播的偏振主模和耦合模之间存在着一定大小的光程差。
The optical path difference of two rays in the condition of near axis is discussed in the single spherical surface refraction.
本文讨论了单球形折射面在傍轴条件下二相邻光束的光程差问题。
The effect of the incident angle on the optical path difference, state of polarization and interference fringes of the system is deduced in detail.
具体分析推导了光线入射角变化对这种新型的可调横向剪切量萨伐尔偏光镜的光程差、偏振度以及对系统干涉条纹的影响；
The nonlinear problem of optical path difference (OPD) of rotating Fourier transform spectrometer universally exists, produced by the rotation of rotating mirror.
转镜的转动会导致光程差存在非线性问题，是转镜式干涉光谱仪普遍存在的问题。
An adaptive phase shifting interferometry, which is insensitive to the uniform optical path difference induced by environment vibration and air turbulence, is studied.
研究对空气扰动及环境振动所造成的常数项光程变化不敏感的自适应干涉系统。
The sensing signal is detected by means of compensating the optical path difference of the two orthogonal polarization modes by two arms path difference of Michelson interferometer.
用迈克尔逊干涉仪两臂光程差来补偿两个偏振模的光程差的方法探测传感信号。
The inherent nonlinerity in the system are analyzed , and the equation of optical path difference(OPD) is given . We obtained the best parameters to decrease the system nonlinerity .
我们着重分析了其系统中存在的固有的非线性，给出了光程差的计算公式，找出了使系统非线性最好的参数匹配，并进行了仿真实验，得到了理想的结果。
The experiments show that the positioning accuracy of extrapolation method for zero optical path difference point of fiber quasi-white interference signal is less than 0.5 interference fringes.
实验表明，采用该方法对光纤准白光干涉信号零光程差位置的定位精度优于0.5个干涉条纹。
Most of traditional methods of angular measurement based on a Michelson Interferometer or its modifications have the same principle: the rotation is transformed into an optical path difference (OPD).
传统激光干涉测角方法，大多采用迈克尔逊干涉仪光路或其变形，将角度测量转变为光程测量。
Result shows that laser beam deflects to the direction which optical path length increase. The far-field intensity of laser beam is not the same for the difference of wavelength.
结果表明：强的激波结构使激光束远场强度分布发生了向光程增大方向的明显偏折，对于波长不同的激光束得到光束通过流场后的远场强度分布不同。
Result shows that laser beam deflects to the direction which optical path length increase. The far-field intensity of laser beam is not the same for the difference of wavelength.
结果表明：强的激波结构使激光束远场强度分布发生了向光程增大方向的明显偏折，对于波长不同的激光束得到光束通过流场后的远场强度分布不同。
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