optical time domain reflectometer

Optical Time Domain Reflectometer ( OTDR) is a kind of the new type optical malfunction measuring equipment that developed in 1980's.

光纤时域反射仪（OTDR）是八十年代才发展起来的新型光纤故障测试设备，全称是Optical Time Domain Reflectometer。

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At the same time, it discusses the elements influencing the test accuracy of optical time domain reflectometer ( OTDR) and measures for eliminating test error.

同时，还讨论了影响光时域反射仪（OTDR）测试精度的要素和消除测试误差通常采用的对策。

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The principle of Brillouin optical time domain reflectometer ( BOTDR) is introduced and its application to the strain monitoring of the strain distribution of the reinforced concrete beam is studied.

介绍了布里渊光时域反射计（BOTDR）的分布式光纤应变测量原理，并应用BOTDR技术对钢筋混凝土T型梁加载后的应变分布进行了测量。

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Two kinds of novel distributed fiber optic sensing technique, i.e., Fiber Bragg Grating ( FBG) and Brillouin Optical Time Domain Reflectometer ( BOTDR), are introduced in this paper.

介绍了两类先进的分布式光纤传感器技术，即光纤光栅（FBG）和布里渊光时域反射计（BOTDR）；

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A new type of symmetrical demodulation method is proposed for the distributed fiber Raman temperature sensor. The anti-Stokes scattering optical time domain reflectometer ( OTDR) curves are demodulated by Rayleigh optical time domain reflectometer curves.

提出了一种用于分布式光纤拉曼温度传感器的对称解调新方案，采用瑞利散射光时域反射仪（OTDR）曲线解调光纤的反斯托克斯散射光时域反射仪曲线。

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A real-time monitoring technology for safety and leakage of oil pipeline based on theories of optical time domain reflectometer ( ODTR) and the distributed optical fiber sensor were introduced.

提出一种基于光时域反射原理（ODTR）和分布式光纤传感原理实现输油管道泄漏安全实时监测的技术。

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In this paper, a novel security systems based on the Φ-OTDR ( phase-sensitive optical time-domain reflectometer,) distributed optical fiber sensing technology is proposed.

本文研究一种新型的基于Φ-OTDR（phase-sensitive optical time-domain reflectometer，相位敏感光时域反射计）分布式光纤传感技术的安防系统。

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At present, fiber Bragg grating ( FBG) temperature/ strain sensors and optical time domain reflectometer have been commercialized, and have been widely used in the health diagnostics of large buildings, bridges, electrical equipment, and the fault localization of optical fiber cables.

目前，光纤光栅温度／应变传感器和光时域反射计已经商品化，并且广泛应用于大型建筑物、桥梁、电力设备等的健康诊断和通信光缆的故障定位。

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Polarization sensitive optical time-domain reflectometer ( P-OTDR) is widely used for measuring polarization parameters of optical fiber ( birefringence, polarization mode dispersion) and for distributed optical fiber sensing.

偏振敏感时域反射计（P-OTDR）在光纤偏振参数（双折射、偏振模色散）分布式测量，分布式传感中有着广泛的应用。

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The output signal characteristics of optical time domain reflectometer ( OTDR) are deduced and analyzed by optimizing the structure parameters of the two rings cavity lengths and coupling ratios.

通过计算机仿真，给出了用光时域反射计（OTDR）探测到的光纤转动传感器输出信号的特性，利用优化的环长和分光比两结构参量，分析了模拟结果。

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The requirements of Interference fiber optical gyroscope ( IFOG), optical time domain reflectometer ( OTDR), biomedicine optical coherence tomography ( OCT), and Wavelength division multiplexing ( WDM) for SLD were introduced respectively.

讨论了在干涉型光纤陀螺仪、光时域反射计、医学相干检测技术、波分复用技术中对SLD的要求。

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For the optical time domain reflectometer ( OTDR), the factors that impact optical fiber transmission characteristics and the principles of Rayleigh scattering and Fresnel reflection are analyzed. The principle and configuation of OTDR are studied, and the main technical specifications of OTDR are discussed.

对于光时域反射计（OTDR）技术，分析了影响光纤传输特性的因素及瑞利散射和菲涅尔反射的原理；研究了OTDR的工作原理及组成，同时讨论了OTDR的主要技术指标。

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Real-time Wavelet Transform Based Coherent detecting Brillouin Optical Time Domain Reflectometer

基于实时小波变换信号处理的相干检测布里渊光时域反射计

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Analysis of Relations between Optical Time Domain Reflectometer's Survey Range and Accuracy in Optical Fiber Telecommunication

光时域反射仪测试范围与光纤线路测试精度分析

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Optical Time Domain Reflectometer ( OTDR) is an important test equipment used widely in optical fiber communication system for measuring the physical properties of optical fiber including the length, the attenuation coefficient, the connection loss.

光时域反射仪（OTDR）是光纤通信系统中常用的测试仪器，它能够测量光纤的长度、衰减系数、接头损耗等物理特性，而且能够对光纤中接头、断点等事件进行精确定位。

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Brillouin Optical Time Domain Reflectometer ( BOTDR) is a state-of-the-art sensing technology in recent years.

布里渊光时域反射测量技术是目前国际上近几年才发展成熟的一项高端传感技术。

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Optical Time Domain Reflectometer is a measuring instrument that is essential for optical fiber communication.

光时域反射计非光纤通信必出无否长的的测量仪器。

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Brillouin Optical Time-Domain Reflectometer ( BOTDR) is a newly developed distributed measuring technique for strains.

布里渊散射光时域反射计（BOTDR）是近年来才研发成功的分布式应变测量技术。

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An optical time domain reflectometer ( OTDR) and distributed optical fiber Raman temperature sensor ( DOFRTS) using correlation technique may has much better performance than conventional ones. This paper using FPGA designs a variable length and width adjustable of high speed Golay complementary code.

根据格雷互补码的产生原理，利用FPGA为硬件基础，设计产生了码元长度可变、码元宽度可调的高速率格雷互补码，可应用于光时域发射计及光纤拉曼温度传感器中提高其性能。

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A distributed optic fiber type strain sensing system based on optical time domain reflectometer and used for monitoring large scale structural strain and deformation state is studied in the paper.

研究了一种用于大型工程结构应变、变形状态监测的基于光时域反射技术的分布式光纤应变传感系统。

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Development of Optical Time Domain Reflectometer Based on DSP

基于DSP的光时域反射仪的研制

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Brillouin optical time domain reflectometer ( BOTDR) is a type of distributed optical fiber sensing technology, which is based on spontaneous Brillouin scattering.

基于自发布里渊散射的布里渊光时域反射计（BOTDR）是一种分布式光纤传感技术。

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As an important tool of optical fiber maintenance, Optical Time Domain Reflectometer ( OTDR) can analyze the detection signal, effectively reflect the breakpoint information, and determine the location and type of the breakpoint.

光时域反射仪OTDR可以通过分析OTDR回收的检测信号，有效反映出光纤中故障点的信息，确定出故障点的位置和类型，是光纤维护过程中的重要工具。

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