The laser phase measurement by phase-smooth unwrapping algorithm and its application in phase error compensation of OFMCW

Qian Zhou, Jie Qin, Weilin Xie, Yan Xu, Yi Dong, Weisheng Hu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Phase error compensation is necessity for high resolution optical frequency modulated continuous wave (OFMCW). In the phase error compensation of OFMCW, the precise measurement of laser source phase is the most significant. In this paper, we proposed a phase-smooth unwrapping algorithm to settle the issue of phase leap over 2π, thus could restore precisely the real phase of laser source, then could compensated the phase error in OFMCW. With that method, OFMCW's resolution could be promoted to 0.5 mm at over 200 m.

Original languageEnglish
Title of host publication2015 International Conference on Optical Instruments and Technology
Subtitle of host publicationOptoelectronic Devices and Optical Signal Processing, OIT 2015
EditorsJian Wu, Yi Dong, Chao Lu, Zhaohui Li
PublisherSPIE
ISBN (Electronic)9781628418002
DOIs
Publication statusPublished - 2015
Event2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, OIT 2015 - Beijing, China
Duration: 17 May 201519 May 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9619
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2015 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, OIT 2015
Country/TerritoryChina
CityBeijing
Period17/05/1519/05/15

Keywords

  • laser phase measurement
  • optical frequency modulated continuous wave
  • phase error compensation
  • phase unwrapping

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