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Microchanneled Chirped Fiber Bragg Grating Formed by Femtosecond Laser-Aided Chemical Etching for Refractive Index and Temperature Measurements
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2008 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 20, no 17-20, 1609-1611 p.Article in journal (Refereed) Published
Abstract [en]

In this work, a microchanneled chirped fiber Bragg grating (MCFBG) is proposed and fabricated through the femtosecond laser-assisted chemical etching. The microchannel (similar to 550 mu m) gives access to the external index liquid, thus inducing refractive index (RI) sensitivity to the structure. In the experiment, the transmission bands induced by the reduced effective index in the microchannel region were used to sense the surrounding RI and temperature changes. The experimental results show good agreement with the theoretical analysis. The proposed MCFBG offers enhanced RI sensitivity without degrading the robustness of the device showing good application potential as bio-chemical sensors.

Place, publisher, year, edition, pages
2008. Vol. 20, no 17-20, 1609-1611 p.
Keyword [en]
Femtosecond (fs) laser, fiber Bragg gratings (FBGs), fiber sensors, microchannel, refractive index (RI) sensor, sensor
Identifiers
URN: urn:nbn:se:kth:diva-17898DOI: 10.1109/lpt.2008.2002727ISI: 000260119600056Scopus ID: 2-s2.0-52149100829OAI: oai:DiVA.org:kth-17898DiVA: diva2:335943
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2013-11-19Bibliographically approved

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He, Sailing

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