An implementation of coherent optical time domain reflectometry

Du Mao-chang

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An implementation of coherent optical time domain reflectometry

更新时间：2025-12-08

- An implementation of coherent optical time domain reflectometry
- Acta Electronica Sinica Issue 1, Pages: 19-22(1985)
- 作者机构：
  
  武汉邮电科学研究院
- 作者简介：
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- Published：1985
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[1]杜懋畅.光相干式时域反射计的研究[J].电子学报,1985(01):19-22.

Du Mao-chang. An implementation of coherent optical time domain reflectometry[J]. Acta Electronica Sinica, 1985, (1): 19-22.
[1]杜懋畅.光相干式时域反射计的研究[J].电子学报,1985(01):19-22. DOI：

Du Mao-chang. An implementation of coherent optical time domain reflectometry[J]. Acta Electronica Sinica, 1985, (1): 19-22. DOI：

摘要

本实验在1.15μm波长波段运用APD及Ge-PIN前置调谐式前级放大器实现了光相干式时域反射计（Coherent OTDR）。观察到了长1500m的单模光纤的二次菲涅尔反射及一次瑞利散射。

Abstract

An experimental system is established to perform coherent optical time domain reflectometry at the wavelength of l

15μm using APD or Ge-PIN diode together with a tuned preamplifier. Secondary Fresnel reflection from far end and primary Rayleigh scattering along a 1500m single mode fibre are also observed.

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