Time resolved Brillouin fiber-spectrometer

La Cavera, Salvatore; P�rez-Cota, Fernando; Fuentes-Dom�nguez, Rafael; Smith, Richard J.; Clark, Matt

Abstract

This report introduces a novel time resolved Brillouin spectrometer, consisting of an opto-acoustic transducer which resides on the tip of a single-mode optical fiber of arbitrary length with 125 µm outer diameter and 5 µm sensing diameter. Demonstrated here are proof of concept spectroscopic measurements-shifts in Brillouin frequency-with sensitivities of 41±3 MHz/%wt and 2.5±0.6 MHz/ • C for changes in water-salinity and water-temperature, respectively, and an interpolated frequency resolution of 9±2 MHz. The technique benefits from low-cost raw materials, scalable fabrication, scalable pixel density, easy alignment, and data acquisition speeds down to 0.4 s: traits which make this compatible with in vivo applications.

Citation

La Cavera, S., Pérez-Cota, F., Fuentes-Domínguez, R., Smith, R. J., & Clark, M. (2019). Time resolved Brillouin fiber-spectrometer. Optics Express, 27(18), 25064-25071. https://doi.org/10.1364/OE.27.025064

• Journal Article Type: Article
• Acceptance Date: Jul 31, 2019
• Online Publication Date: Aug 20, 2019
• Publication Date: Sep 2, 2019
• Deposit Date: Aug 12, 2019
• Publicly Available Date: Aug 21, 2020
• Journal: Optics Express
• Electronic ISSN: 1094-4087
• Publisher: Optical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 27
• Issue: 18
• Pages: 25064-25071
• DOI: https://doi.org/10.1364/OE.27.025064
• Keywords: Atomic and Molecular Physics, and Optics
• Public URL: https://nottingham-repository.worktribe.com/output/2418489
• Publisher URL: https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-18-25064
• Additional Information: This article is maintained by: OSA - The Optical Society; Crossref DOI link to publisher maintained version: https://doi.org/10.1364/OE.27.025064; Article type: research-article; Similarity check: Screened by Similarity Check; Peer reviewed: Yes; Review process: Single blind; Received: 3 June 2019; Accepted: 31 July 2019; Published: 20 August 2019; Copyright: Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
• Contract Date: Aug 12, 2019