光纤

The apparatus includes an optical fiber biconic lens disposed on an end of the optical fiber such that the optical fiber and the biconic lens define an optical axis.

该装置包括一个定位在光纤(44)一端上的光纤双锥形透镜(46)，使得光纤和双锥形透镜限定光轴。

Photonic crystal fiber is superior to conventional optical fiber, and it improves the efficiency of some original optical devices. It will become an important buckstay of optical devices in place of conventional optical fiber.

光子晶体光纤有着传统光纤无法比拟的优越性，极大地改善原有某些光学器件的性能，它将在很大范围内取代传统光纤成为光学器件内的一个重要的支柱。

An allocation optical fiber sensor comprises signal treatment circuit, sensor optical cable, supernarrow wide laser, two detectors, three offsets, four couplers, four wave-length division multiplex, superradiation LED, polarizer and phase adapter, Sagna conoscope and Mach conoscope shares No1 sensitive optical fiber LB with the third wavelength division multiplex through the first wavelength division multiplex, the second wavelength division multiplex shared with the fourth wavelength division multiplex the second sensitive optical fiber to form the hybrid conoscope.

本发明公开了一种分布式光纤振动传感器，由信号处理电路、传感光缆、超窄线宽激光器、两个探测器、三个消偏器、四个耦合器、四个波分复用器、超辐射发光二极管、起偏器和相位调制器组成；在本发明中构成的萨格奈克干涉仪和马赫-泽德干涉仪，通过第一波分复用器与第三波分复用器共用第一敏感光纤L B ，第二波分复用器与第四波分复用器共用第二敏感光纤L C 形成了混合干涉仪。

The characteristics of different types OCS were analyzed and research into polarized light system of OCS using Jones matrix method, then the mathematics model of OCS was set up at last.Full-fiber OCS with effective band of 300 MHz and correlative circuit has been developed. Double constructer was adopted to enhance the sensitivity of system.

分析了不同类型光纤电流传感器的特点，利用琼斯矩阵法对光纤电流传感器的偏振光系统进行研究，给出了不同状态偏振光的归一化琼斯矢量，对本文涉及的光学器件推导了相应的Jones矩阵，最终建立了光纤电流传感器的数学模型。

The device to be measured can preciser than that in measure system. By analysing the errors in measure system and the result of some fiber devices, it is showed that"white light"interferent system is of high precision in the measurement of coupling rate and coupling points.

对测量系统的误差分析，以及实测器件的测试数据分析表明，宽谱干涉光纤测量系统在测量光纤或光纤器件的偏振状态分布时，无论是在耦合率测试，还是在耦合点位置测试方面，均达到很高精度。

Such lensed fiber tip corrects for the phase front mismatch between the curved laser beam wave front and the planar fiber beam.

本文研究的透镜光纤主要是楔形柱透镜光纤，它的作用是修正激光光束波前和从光纤出来光束之间的相位失配。

The emission of N_2 in discharge gap is detected using optical emission spectrophy. The discharge reactor was put in lightproof box to avoid the disturbance from outside lights. A small hole was drilled in one sidewall of the box, and the fibre was mounted coupling to the inlet (1mm) into the hole. A tube with the inner diameter of 1.1mm was set in the front of the hole. In this way, only the light from a certain direction emitted from the discharge reactor could transfer into the inlet through the tube. The reactor could be moved in the vertical direction of the fibre, and the spectrometry can collect the total emission along the fibre inlet in single-shot measurement.

利用光学发射光谱仪对多针对板电晕放电中放电间隙内的N_2发射光谱进行测量，放电反应器置于暗箱中以避免外界对光谱测量的影响，将光谱仪的光纤耦合入口固定在暗箱侧壁的小孔内，小孔孔径为光纤耦合入口直径，在小孔前方安装孔径为1.1mm的细直管，只采集与光纤耦合入口在同一直线上的发光，避免放电区其它区域的发光被同时接收。

The CW and CCW light which propagate in the imperfect single-mode fiber in Fiber-optic depolarized gyro must generate a nonreciprocal phase error associated with magnetic field,because of Faraday effect,when the magnetic field is perpendicular to the fiber loop surface.

去偏光纤陀螺的非理想单模光纤，在垂直于光纤环面的轴向磁场作用下，由于Faraday效应，在其中传播的正反两束光会产生一个与磁场有关的非互易相位差。

This paper analyzes the optical characteristics of fiber grating according to the theory of mode-coupling in nonsymmetrical optical wave-guide, which affords the gist for the testing of optical characteristics and tuning characteristics of fiber grating. Moreover, we deduce the linear relationship between reflected wavelength shift of fiber grating and vertical displacement of cantilever beam which the fiber grating is sticked on.

论文根据非均匀光波导中的模式耦合理论，分析讨论了光纤光栅的光学特征，为光纤光栅的光学特性和调谐特性的测试提供理论依据；并根据材料力学原理推导了光纤光栅波长漂移量与侧向位移的线性调谐关系。

To meet the needs, a novel low-noise fiber laser with compound cavity structure is designed. The stable single-mode operation is realized by using a transient self-written fiber grating, produced by the effect of saturable absorption within a section of unpumped erbium-doped fiber, as narrow band filter for mode selecting and linewidth squeezing. Through optical path modification, the spectral signal-to-noise ratio is better than 62 dB.

激光器采用复合腔结构，以掺铒光纤作为工作物质，通过在未被抽运的掺铒光纤中形成的瞬态自写入光纤光栅的窄带滤波特性进行选模和压窄线宽，产生稳定的单频激光输出；经过光路改进，激光输出光谱信噪比优于62 dB；利用光电负反馈电路，弛豫振荡峰下降了约25 dB，低频段强度噪声也大为改善，有效地抑制了光源的强度噪声。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。