Article
High-Resolution Slow-Light Fiber Bragg Grating Temperature Sensor with Phase-Sensitive Detection
Optics Letters
Abstract
This Letter reports a slow-light fiber Bragg grating (FBG) temperature sensor with a record temperature resolution of ~0.3 m°C √Hz, a drift of only ~1 m°C over the typical duration of a measurement (~30 s), and negligible self-heating. This sensor is particularly useful for applications requiring the detection of very small temperature changes, such as radiation-balanced lasers and the measurement of small absorptive losses using calorimetry. The sensor performance is demonstrated by measuring the heat generated in a pumped Yb-doped fiber. The sensor is also used to measure the slow-light FBG's very weak internal absorption loss (0.02m-1), which is found to be only ~2% of the total loss.
Department(s)
Electrical and Computer Engineering
Comments
Funding: Air Force Office of Scientific Research (AFOSR) (FA9550-16-1-0383); Canada Foundation for Innovation (CFI); Northrop Grumman; Natural Sciences and Engineering Research Council of Canada (NSERC) (CG112389).
Keywords and Phrases
- Slow light,
- Temperature sensors, Absorption loss,
- High resolution,
- Phase sensitive detection,
- Self-heating,
- Sensor performance,
- Temperature changes,
- Temperature resolution,
- Yb-doped fibers, Fiber Bragg gratings
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2018 Optical Society of America (OSA), All rights reserved.
Publication Date
7-1-2018
Publication Date
01 Jul 2018
Disciplines
Citation Information
Arushi Arora, Mina Esmaeelpour, Martin Bernier and Michel J. F. Digonnet. "High-Resolution Slow-Light Fiber Bragg Grating Temperature Sensor with Phase-Sensitive Detection" Optics Letters Vol. 43 Iss. 14 (2018) p. 3337 - 3340 ISSN: 0146-9592; 1539-4794 Available at: http://works.bepress.com/mina-esmaeelpour/1/