Implementation of active Q-switching based on a modulated fiber Fabry-Perot filter in linear cavity erbium doped fiber laser

Kaboko Jean Jacques Monga, Johan Meyer, Rodolfo Martinez Manuel

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

5 Citations (Scopus)

Abstract

A linear cavity Q-switched fiber based laser is designed and demonstrated experimentally. The Q-switching technique is based on dynamic spectral overlap between a modulated fiber Fabry-Perot tunable filter and a fiber Bragg grating. To characterize the Q-switched fiber laser performance, a 3m length of Erbium doped fiber was used. Fiber laser parameters such as output coupling ratio, pump power and modulation frequency were optimized to obtain a laser output of 5.6W peak power with a 450ns pulse width and a 1 kHz repetition rate. Using the optimized fiber laser cavity design, the extinction ratio of the fiber laser up to 36 dB was achieved. This Q-switching technique for achieving laser pulses maintains the intrinsic robustness and simplicity of an all fiber laser system.

Original languageEnglish
Title of host publication2017 IEEE AFRICON
Subtitle of host publicationScience, Technology and Innovation for Africa, AFRICON 2017
EditorsDarryn R. Cornish
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages620-624
Number of pages5
ISBN (Electronic)9781538627754
DOIs
Publication statusPublished - 3 Nov 2017
EventIEEE AFRICON 2017 - Cape Town, South Africa
Duration: 18 Sept 201720 Sept 2017

Publication series

Name2017 IEEE AFRICON: Science, Technology and Innovation for Africa, AFRICON 2017

Conference

ConferenceIEEE AFRICON 2017
Country/TerritorySouth Africa
CityCape Town
Period18/09/1720/09/17

Keywords

  • Erbium-doped fiber
  • Fiber Fabry-Perot tunable filter
  • Q-switched fiber laser

ASJC Scopus subject areas

  • Human-Computer Interaction
  • Signal Processing
  • Computer Vision and Pattern Recognition
  • Artificial Intelligence
  • Computer Networks and Communications
  • Computer Science Applications

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