Coherent optical frequency-domain reflectometer based on a fibre laser with frequency self-scanning

Autor:	A. Yu. Tkachenko, Ivan A. Lobach, S. I. Kablukov
Rok vydání:	2019
Předmět:	Optics Materials science Optical frequencies business.industry Fiber laser Statistical and Nonlinear Physics Electrical and Electronic Engineering Reflectometry business Atomic and Molecular Physics and Optics Tunable laser Electronic Optical and Magnetic Materials Domain (software engineering)
Zdroj:	Quantum Electronics. 49:1121-1126
ISSN:	1468-4799 1063-7818
DOI:	10.1070/qel17165
Popis:	The first results of an experimental study of a coherent optical frequency-domain reflectometer (C-OFDR) based on a simple single-frequency fibre laser with frequency self-scanning are presented. The self-scanning laser generates microsecond pulses, and its lasing frequency changes linearly with a change in the pulse number without using any actively tuned elements. In addition, the generation of each pulse occurs on only one longitudinal mode with a linewidth less than 1 MHz. This laser is characterised by a high linearity of frequency tuning, due to which reflectograms can be measured without any additional spectral correction. The C-OFDR demonstrates a possibility of attaining a spatial sampling of ∼200 μm and a reflectance sensitivity of approximately down to – 80 dB at a test line length of ∼9 m.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9da92ffd0542abcf2922ee36be1d64da https://doi.org/10.1070/qel17165 Zobrazit plný text záznamu