Real-time observation of the optical Sagnac effect in ultrafast bidirectional fibre lasers

M. Chernysheva, S. Sugavanam, S. Turitsyn

Research output: Contribution to journalArticle

Abstract

The optical Sagnac effect sets fundamentals of the operating principle for ring laser and fiber optic gyroscopes, which are preferred instruments for inertial guidance systems, seismology, and geodesy. Operating at both high bias stability and angular velocity resolutions demands special precautions like dithering or multimode operation to eliminate frequency lock-in or similar effects introduced due to synchronization of counterpropagating channels. Recently, to circumvent these limitations, ultrashort pulsed radiation was suggested to supersede conventional continuous wave operation. Despite the ultrafast nature of ultrashort pulse generation, the interrogation of the Sagnac effect relies on highly averaging measurement methods. Here, we demonstrate the novel approach to the optical Sagnac effect visualization by applying real-time spatio-temporal intensity processing and time-resolved spectral domain measurements of ultrashort pulse dynamics in rotating the bidirectional ring fiber laser cavity. Our results reveal the high potential of application of novel methods of optical Sagnac effect measurements, allowing enhancement of rotation sensitivity and resolution by several orders of magnitude.
Original languageEnglish
Article number016104
JournalAPL Photonics
Volume5
Issue number1
Early online date7 Jan 2020
DOIs
Publication statusE-pub ahead of print - 7 Jan 2020

Fingerprint

Sagnac effect
Ultrafast lasers
Fiber lasers
fiber lasers
Ring lasers
Ultrashort pulses
ring lasers
Laser optics
Seismology
Geodesy
inertial guidance
Laser resonators
Gyroscopes
Angular velocity
pulsed radiation
geodesy
Fiber optics
accident prevention
seismology
interrogation

Bibliographical note

© 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license
(http://creativecommons.org/licenses/by/4.0/).

Funding: Royal Academy of Engineering and Global Challenges Research Fund. Russian Science Foundation (Grant No. 17-72-30006). Project H2020-MSCA- COFUND-MULTIPLY.

Cite this

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abstract = "The optical Sagnac effect sets fundamentals of the operating principle for ring laser and fiber optic gyroscopes, which are preferred instruments for inertial guidance systems, seismology, and geodesy. Operating at both high bias stability and angular velocity resolutions demands special precautions like dithering or multimode operation to eliminate frequency lock-in or similar effects introduced due to synchronization of counterpropagating channels. Recently, to circumvent these limitations, ultrashort pulsed radiation was suggested to supersede conventional continuous wave operation. Despite the ultrafast nature of ultrashort pulse generation, the interrogation of the Sagnac effect relies on highly averaging measurement methods. Here, we demonstrate the novel approach to the optical Sagnac effect visualization by applying real-time spatio-temporal intensity processing and time-resolved spectral domain measurements of ultrashort pulse dynamics in rotating the bidirectional ring fiber laser cavity. Our results reveal the high potential of application of novel methods of optical Sagnac effect measurements, allowing enhancement of rotation sensitivity and resolution by several orders of magnitude.",
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Real-time observation of the optical Sagnac effect in ultrafast bidirectional fibre lasers. / Chernysheva, M.; Sugavanam, S.; Turitsyn, S.

In: APL Photonics, Vol. 5, No. 1, 016104, 07.01.2020.

Research output: Contribution to journalArticle

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