Technique for the measurement of picosecond optical pulses using a non-linear fiber loop mirror and an optical power meter

Umair A. Korai, Zifei Wang, Cosimo Lacava, Lawrence R. Chen, Ivan Glesk, Michael J. Strain

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Abstract

A method for measuring picosecond pulse width by using only fiber components and optical power meters is presented. We have shown that the output power splitting ratio of a non-linear fiber loop mirror can be used to extract the full-width half maximum of the optical pulse, assuming a known slowly varying envelope shape and internal phase structure. Theoretical evaluation was carried out using both self-phase and cross-phase modulation approaches, with the latter showing a twofold sensitivity increase, as expected. In the experimental validation, pulses from an actively fiber mode-locked laser at the repetition rate of 10 GHz were incrementally temporally dispersed by using SMF–28 fiber, and then successfully measured over a pulse width range of 2–10 ps, with a resolution of 0.25 ps. This range can be easily extended from 0.25 to 40 ps by selecting different physical setup parameters.
Original languageEnglish
Pages (from-to)6377-6388
Number of pages12
JournalOptics Express
Volume27
Issue number5
DOIs
Publication statusPublished - 20 Feb 2019

Keywords

  • picosecond pulse width
  • fiber components
  • optical power meters

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