Optimization and characterization of femtosecond laser inscribed in-fiber microchannels for liquid sensing

Graham C.B. Lee, Chengbo Mou, Kaiming Zhou, Kate Sugden

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

In-fiber microchannels were fabricated directly in standard single mode fiber using the femtosecond laser inscribe and etch technique. This method of creating in-fiber microchannels offers great versatility since it allows complex three dimensional structures to be inscribed and then etched with hydrofluoric acid. Four in-fiber microchannel designs were experimentally investigated using this technique. Device characteristics were evaluated through monitoring the spectral change while inserting index matching oils into each microchannel - a R.I. sensitivity up to 1.55 dB/RIU was achieved. Furthermore, a simple Fabry-Pérot based refractometer with a R.I. sensitivity of 2.75 nm/RIU was also demonstrated.

Original languageEnglish
Title of host publication23rd international conference on Optical Fibre Sensors
EditorsJosé M. López-Higuera, Julian D.C. Jones, Manuel López-Amo, José L. Santos
Place of PublicationBellingham, WA (US)
PublisherSPIE
Number of pages4
ISBN (Print)978-1-6284-1175-1
DOIs
Publication statusPublished - 2 Jun 2014
Event23rd international conference on Optical Fibre Sensors - Santander, Spain
Duration: 2 Jun 20146 Jun 2014

Publication series

NameSPIE proceedings
PublisherSPIE
Volume9157
ISSN (Print)0277-786X

Conference

Conference23rd international conference on Optical Fibre Sensors
Abbreviated titleOFS 23
CountrySpain
CitySantander
Period2/06/146/06/14

Bibliographical note

Graham C. B. Lee ; Chengbo Mou ; Kaiming Zhou and Kate Sugden
"Optimization and characterization of femtosecond laser inscribed in-fiber microchannels for liquid sensing", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915743 (June 2, 2014).

Copyright (2014) Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

http://dx.doi.org/10.1117/12.2058315

Keywords

  • etching
  • femtosecond laser
  • fiber optic sensors
  • hydrofluoric acid
  • inscription
  • microchannel
  • refractometer

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