Sweeping range control in a self-sweeping laser with selective mirrors

A. Y. Tkachenko, A. D. Vladimirskaya, I. A. Lobach, S. I. Kablukov

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

Abstract

The laser wavelength in self-sweeping laser is linearly changing in time from start to stop wavelength without use of optical elements and electrical drivers for frequency tuning. Absolute difference between the start and stop wavelength values (sweeping span) characterizing the sweeping process is one of the key characteristics of any tunable source. Owing to broad sweeping span (more than 10 nm) and simplicity, self-sweeping fiber lasers are attractive sources for applications demanding tunable radiation such as sensors interrogation, spectral analysis, optical frequency domain reflectometry and so on. Self-induced nature of the sweeping process leads to fluctuations of the sweeping span borders. We demonstrate in this talk implementation of fiber Bragg gratings (FBG) for control and stabilization of start and stop wavelengths in the self-sweeping laser. We showed that the short-wavelength FBG helps to initialize the sweeping process and long-wavelength FBG blocks the laser line sweeping in long-wavelength region. The last effect is associated with mismatch of longitudinal mode structures of the laser and FBG-based selector. As a result, fluctuations of the sweeping span borders decreased by one or two orders of magnitude down to several picometers. In addition, we studied influence of the parameters for FBG-based selectors such as reflections and mode structure on quality of sweeping range stabilization. The results allow to improve the characteristics of self-sweeping fiber laser which can be used for different sensing applications such as atmospheric remote sensing and interrogation of the sensors based on fiber Bragg gratings.

Original languageEnglish
Title of host publicationAdvanced Sensor Systems and Applications VIII
EditorsT Liu, S Jiang
PublisherSPIE
Number of pages8
Volume10821
ISBN (Electronic)9781510622401
DOIs
Publication statusPublished - 1 Jan 2018
EventAdvanced Sensor Systems and Applications VIII 2018 - Beijing, China
Duration: 11 Oct 201813 Oct 2018

Publication series

NameProceedings of SPIE
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume10821
ISSN (Print)0277-786X

Conference

ConferenceAdvanced Sensor Systems and Applications VIII 2018
CountryChina
CityBeijing
Period11.10.201813.10.2018

Keywords

  • Fiber Bragg Grating
  • Fiber Lasers
  • Self-Sweeping Effect
  • fiber Bragg grating
  • fiber lasers
  • self-sweeping effect
  • DOPED FIBER LASER

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