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

Research output: Contribution to journalArticle

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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

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Laser pulses
Mirrors
mirrors
fibers
Fibers
pulses
Mode-locked fiber lasers
pulse duration
Phase modulation
Phase structure
picosecond pulses
phase modulation
repetition
envelopes
evaluation
output
sensitivity
lasers

Keywords

  • picosecond pulse width
  • fiber components
  • optical power meters

Cite this

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title = "Technique for the measurement of picosecond optical pulses using a non-linear fiber loop mirror and an optical power meter",
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.",
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Technique for the measurement of picosecond optical pulses using a non-linear fiber loop mirror and an optical power meter. / Korai, Umair A.; Wang, Zifei; Lacava, Cosimo; Chen, Lawrence R.; Glesk, Ivan; Strain, Michael J.

In: Optics Express, Vol. 27, No. 5, 20.02.2019, p. 6377-6388.

Research output: Contribution to journalArticle

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T1 - Technique for the measurement of picosecond optical pulses using a non-linear fiber loop mirror and an optical power meter

AU - Korai, Umair A.

AU - Wang, Zifei

AU - Lacava, Cosimo

AU - Chen, Lawrence R.

AU - Glesk, Ivan

AU - Strain, Michael J.

N1 - © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Authors and readers may use, reuse, and build upon the article, or use it for text or data mining without asking prior permission from the publisher or the Author(s), as long as the purpose is non-commercial and appropriate attribution is maintained.

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AB - 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.

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