光频域反射计(OFDR)是一种高分辨率测量仪器,其动态范围大,可应用于 各种范围的测量。目前,在国外,OFDR技术已被广泛应用于各个领域,而国内关于这方面的研究 和文章还不多。本文介绍了OFDR的基本原理和关键技术。同时,介绍了OFDR在国外的应用和发展现状。

An Optical Frequency Domain Reflectometer (OFDR) is a high resolution measurement apparatus with a large dynamic range. It can be used in various areas. At present, the OFDR technology is used in a wide variety of fields at abroad and the research on this technology in our country is rarely reported. In this paper, the basic principle and key techniques of an OFDR are described and the application and development status of OFDRs at abroad are presented.