Y
Yun Li
Researcher at University of Ottawa
Publications - 17
Citations - 636
Yun Li is an academic researcher from University of Ottawa. The author has contributed to research in topics: Brillouin scattering & Brillouin zone. The author has an hindex of 9, co-authored 17 publications receiving 594 citations.
Papers
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Journal ArticleDOI
Differential pulse-width pair BOTDA for high spatial resolution sensing
TL;DR: A differential pulse-width pair Brillouin optical time domain analysis (DPP-BOTDA) for centimeter spatial resolution sensing using meter equivalent pulses is proposed.
Journal ArticleDOI
Stabilization of electro-optic modulator bias voltage drift using a lock-in amplifier and a proportional-integral-derivative controller in a distributed Brillouin sensor system.
TL;DR: It is found that the two locking methods, one based on a lock-in amplifier and the other using proportional-integral-derivative control, both have applications in which they excel at locking the pulse base.
Journal ArticleDOI
A Novel Distributed Brillouin Sensor Based on Optical Differential Parametric Amplification
TL;DR: In this article, a novel distributed sensor based on coherent interaction of the Brillouin gain and loss via optical differential parametric amplification (ODPA) was proposed, which provides narrowed parametric Brussoupin gain spectrum, strong Brilloupin signal via differential gain, and short measurement time simultaneously.
Journal ArticleDOI
Signal Processing Technique for Distributed Brillouin Sensing at Centimeter Spatial Resolution
TL;DR: In this paper, a technique for the accurate processing of experimental data measured with the distributed Brillouin sensor at centimeter spatial resolution is proposed, which uses analytical solutions of the steady-state-coupled intensity equations for stimulated BrillOUin scattering.
Patent
Distributed Brillouin sensor system based on DFB lasers using offset locking
TL;DR: In this paper, a distributed Brillouin sensor system is presented, where two distributed feedback (DFB) lasers are used to lock the optical fiber through offset locking by coupler splitting into two parts.