Through-the-coating femtosecond laser inscription of very short fiber Bragg gratings for acoustic and high temperature sensing applications

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DOI	Resolve DOI: https://doi.org/10.1364/OE.25.025435
Author	Search for: Hnatovsky, Cyril¹; Search for: Grobnic, Dan¹; Search for: Mihailov, Stephen J.¹
Name affiliation	National Research Council of Canada. Security and Disruptive Technologies
Format	Text, Article
Journal title	Optics Express
ISSN	1094-4087
Volume	25
Issue	21
Pages	25435–25446
Abstract	Very short Type I and Type II Bragg gratings, on the order of 100 µm in length, are written through the protective polyimide coating of high NA and standard single mode silica optical fibers with infrared femtosecond pulses and a phase mask. By exploiting the transverse walk-off of apertured diffracted beams produced by the phase mask and a slit placed proximate the mask, complex grating structures are fabricated and characterized. These gratings are suitable for structural health monitoring based on acoustic measurements or localized high-temperature measurements.
Publication date	2017-10-05
Publisher	Optical Society of America
Language	English
Peer reviewed	Yes
NPARC number	23002484
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Record identifier	ce2e966f-aea4-4184-9459-8ce610b1741a
Record created	2017-11-16
Record modified	2020-05-30