Increased sensitivity of femtosecond laser micro-machined in-fiber Mach-Zehnder interferometer for small-scale refractive index sensing

Anna Dębowska , Marcin Koba , Monika Janik , Wojtek J. Bock , Mateusz Jakub Śmietana

Abstract

In this paper we focus on refractive index (RI) sensing properties of a micro-size In-fiber Mach-Zehnder Interferometer (μIMZI). The μIMZI structure was fabricated as a precisely controlled side opening of a single-mode fiber using a femtosecond laser. The sensitivity to RI change in the micro-cavity has been measured and two RI sensitivity regions have been found for RI 1.33-1.36 and 1.37-1.40 RIU. The sensitivity in the first region is over 12,000 nm/RIU, and in the higher RI region is close to 50% higher. The obtained structures are an excellent solution for RI sensing with negligible temperature cross-sensitivity, especially where small amounts of liquid are available, e.g. in lab-on-chip, microfluidics.
Author Anna Dębowska IMiO
Anna Dębowska,,
- The Institute of Microelectronics and Optoelectronics
, Marcin Koba - [Instytut Łączności PIB (IŁ PIB)]
Marcin Koba,,
-
- Instytut Łączności PIB
, Monika Janik
Monika Janik,,
-
, Wojtek J. Bock
Wojtek J. Bock,,
-
, Mateusz Jakub Śmietana IMiO
Mateusz Jakub Śmietana,,
- The Institute of Microelectronics and Optoelectronics
Pages1-4
Publication size in sheets0.5
Book Lewis Elfed (eds.): Proceedings of the SPIE Sixth European Workshop on Optical Fibre Sensors, vol. 9916, 2016, SPIE, ISBN 9781510602199, 200 p., DOI:10.1117/12.2242681
DOIDOI:10.1117/12.2236899
URL http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2525056
projectx. Project leader: Śmietana Mateusz Jakub, , Phone: (22) 234 63 64, start date 25-02-2015, planned end date 24-02-2018, IMIO/2015/NCN/1, Implemented
WEiTI Projects financed by NSC [Projekty finansowane przez NCN]
Neuronal cell cultures substrates with optical fiber sensors monitoring. Project leader: Dębowska Anna, , Phone: (+48) 22 234 7932, start date 17-09-2014, planned end date 16-06-2017, IMiO/2014/DIG/1, Implemented
WEiTI Projekty finansowane przez MNiSW
Languageen angielski
Score (nominal)15
ScoreMinisterial score = 15.0, 27-03-2017, BookChapterMatConf
Ministerial score (2013-2016) = 15.0, 27-03-2017, BookChapterMatConf
Citation count*4 (2018-07-18)
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