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。
Variation of path difference velocity and temperature of wind field are analyzed and calculated applying interference image spectroscopy.
采用干涉成像光谱技术对被探测源谱线为高斯轮廓时风场的速度、温度的测量进行了分析和计算。
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。
It can basically reflect the additional viscosity pressure drop due to flow path difference and additional inertial pressure drop due to high speed convergent flow.
该模型从本质上反映了因流线差异造成的粘性附加压降损失和高速紊流效应造成的惯性附加压降损失。
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 centrobaric method was used to determine the position with the maximum modulation value of fringes and the position was used as the point of zero light path difference.
采用重心法确定干涉条纹调制度的最大值位置，并以此作为零光程差位置。
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 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。
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。
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