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Type: Conference paper
Title: Interferometric fiber sensor using exposed core microstructured optical fiber for refractive index based biochemical sensing
Author: Nguyen, L.
Warren-Smith, S.
Cooper, A.
Monro, T.
Citation: Proceedings of SPIE - The International Society for Optical Engineering, 2014 / LopezHiguera, J., Jones, J., LopezAmo, M., Santos, J. (ed./s), vol.9157, pp.91574P-1-91574P-4
Publisher: SPIE
Issue Date: 2014
Series/Report no.: Proceedings of SPIE
ISBN: 9781628411751
ISSN: 0277-786X
Conference Name: 23rd International Conference on Optical Fibre Sensors (02 Jun 2014 - 06 Jun 2014 : Santander, Spain)
Statement of
Linh Viet Nguyen, Stephen C. Warren-Smith, Alan Cooper, Tanya M. Monro
Abstract: We proposed and experimentally demonstrated an in-fiber interferometric-type sensor by splicing an exposed core microstructured optical fiber (ECF) with lead-in and lead-out single mode fibers (SMFs) for refractive index-based biochemical sensing applications. Due to the multimode characteristic of the ECF, several modes can be excited at the lead-in splicing point and, after propagating through the ECF section, arrive at the lead-out splicing point with different phases forming a multi-arm interference pattern in the transmission spectrum of the device. Two dominant modes were found be consistently excited by maximizing the butt coupling between ECF and SMFs. The interference fringes shifts differently upon applying liquids of different refractive index on the exposed side of the EC.
Keywords: Exposed core; Microstructured fiber; Refractive index; Interference; Biochemical sensing
Rights: © 2014 SPIE
RMID: 0030012788
DOI: 10.1117/12.2059155
Appears in Collections:IPAS publications

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