Microbottle resonator for formaldehyde liquid sensing

M. A.M. Johari; A. Al Noman; M. I.M. Abdul Khudus; M. H. Jali; H. H.M. Yusof; S. W. Harun; M. Yasin

doi:10.1016/j.ijleo.2018.08.022

Microbottle resonator for formaldehyde liquid sensing

M. A.M. Johari, A. Al Noman, M. I.M. Abdul Khudus, M. H. Jali, H. H.M. Yusof, S. W. Harun, M. Yasin

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

We have successfully investigated the use of a whispering gallery mode (WGM) optical micro-bottle resonator (MBR) for liquid formaldehyde (CH₂O) sensing. The MBR was fabricated via the “soften-and-compress” method to create a bulge (bottle) structure with a bottle diameter of 190 μm. The MBR was optically excited by using a non-adiabatic 2 μm optical microfiber and was found to have a Q-factor of >10⁵. The MBR was then employed to measure formaldehyde concentration within 1–5% range and the performance was compared with a bare microfiber. The MBR sensor was found to have a sensitivity of 4.397 dB/% with 90% linearity which were superior to the bare microfiber. The MBR sensor was also found to have good repeatability and stability over a period of 60 min. This indicates that MBR sensor has a great potential to be employed as a low cost formaldehyde liquid sensor.

Original language	English
Pages (from-to)	180-184
Number of pages	5
Journal	Optik
Volume	173
DOIs	https://doi.org/10.1016/j.ijleo.2018.08.022
Publication status	Published - Nov 2018

Keywords

Formaldehyde liquid
Optical microbottle resonator
Quality factor
Tapered microfiber
Whispering gallery mode

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10.1016/j.ijleo.2018.08.022

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@article{a529cb0af0254e82b87e88486230c132,

title = "Microbottle resonator for formaldehyde liquid sensing",

abstract = "We have successfully investigated the use of a whispering gallery mode (WGM) optical micro-bottle resonator (MBR) for liquid formaldehyde (CH2O) sensing. The MBR was fabricated via the “soften-and-compress” method to create a bulge (bottle) structure with a bottle diameter of 190 μm. The MBR was optically excited by using a non-adiabatic 2 μm optical microfiber and was found to have a Q-factor of >105. The MBR was then employed to measure formaldehyde concentration within 1–5% range and the performance was compared with a bare microfiber. The MBR sensor was found to have a sensitivity of 4.397 dB/% with 90% linearity which were superior to the bare microfiber. The MBR sensor was also found to have good repeatability and stability over a period of 60 min. This indicates that MBR sensor has a great potential to be employed as a low cost formaldehyde liquid sensor.",

keywords = "Formaldehyde liquid, Optical microbottle resonator, Quality factor, Tapered microfiber, Whispering gallery mode",

author = "Johari, {M. A.M.} and {Al Noman}, A. and {Abdul Khudus}, {M. I.M.} and Jali, {M. H.} and Yusof, {H. H.M.} and Harun, {S. W.} and M. Yasin",

note = "Funding Information: The authors would like to acknowledge the Airlangga University, Ministry of Research, Technology and Higher Education, Indonesia (through KLN programme, 2018) and Newton Institutional Links, UK for their financial support. The authors also would like to thanks Prof. Sergei K. Turitsyn and Dr. Auro Michele Perego (Aston University, Birmingham, UK) for discussions and collaborations. Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = nov,

doi = "10.1016/j.ijleo.2018.08.022",

language = "English",

volume = "173",

pages = "180--184",

journal = "Optik",

issn = "0030-4026",

publisher = "Urban und Fischer Verlag Jena",

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T1 - Microbottle resonator for formaldehyde liquid sensing

AU - Johari, M. A.M.

AU - Al Noman, A.

AU - Abdul Khudus, M. I.M.

AU - Jali, M. H.

AU - Yusof, H. H.M.

AU - Harun, S. W.

AU - Yasin, M.

N1 - Funding Information: The authors would like to acknowledge the Airlangga University, Ministry of Research, Technology and Higher Education, Indonesia (through KLN programme, 2018) and Newton Institutional Links, UK for their financial support. The authors also would like to thanks Prof. Sergei K. Turitsyn and Dr. Auro Michele Perego (Aston University, Birmingham, UK) for discussions and collaborations. Publisher Copyright: © 2018

PY - 2018/11

Y1 - 2018/11

N2 - We have successfully investigated the use of a whispering gallery mode (WGM) optical micro-bottle resonator (MBR) for liquid formaldehyde (CH2O) sensing. The MBR was fabricated via the “soften-and-compress” method to create a bulge (bottle) structure with a bottle diameter of 190 μm. The MBR was optically excited by using a non-adiabatic 2 μm optical microfiber and was found to have a Q-factor of >105. The MBR was then employed to measure formaldehyde concentration within 1–5% range and the performance was compared with a bare microfiber. The MBR sensor was found to have a sensitivity of 4.397 dB/% with 90% linearity which were superior to the bare microfiber. The MBR sensor was also found to have good repeatability and stability over a period of 60 min. This indicates that MBR sensor has a great potential to be employed as a low cost formaldehyde liquid sensor.

AB - We have successfully investigated the use of a whispering gallery mode (WGM) optical micro-bottle resonator (MBR) for liquid formaldehyde (CH2O) sensing. The MBR was fabricated via the “soften-and-compress” method to create a bulge (bottle) structure with a bottle diameter of 190 μm. The MBR was optically excited by using a non-adiabatic 2 μm optical microfiber and was found to have a Q-factor of >105. The MBR was then employed to measure formaldehyde concentration within 1–5% range and the performance was compared with a bare microfiber. The MBR sensor was found to have a sensitivity of 4.397 dB/% with 90% linearity which were superior to the bare microfiber. The MBR sensor was also found to have good repeatability and stability over a period of 60 min. This indicates that MBR sensor has a great potential to be employed as a low cost formaldehyde liquid sensor.

KW - Formaldehyde liquid

KW - Optical microbottle resonator

KW - Quality factor

KW - Tapered microfiber

KW - Whispering gallery mode

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Microbottle resonator for formaldehyde liquid sensing

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Keywords

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