ZnO nanorods coated microfiber loop resonator for relative humidity sensing

Huda Adnan Zain; Mohd Hafiz Jali; Hazli Rafis Abdul Rahim; Md Ashadi Md Johari; Haziezol Helmi Mohd Yusof; Siddharth Thokchom; Moh Yasin; Sulaiman Wadi Harun

doi:10.1016/j.yofte.2019.102080

ZnO nanorods coated microfiber loop resonator for relative humidity sensing

Huda Adnan Zain, Mohd Hafiz Jali, Hazli Rafis Abdul Rahim, Md Ashadi Md Johari, Haziezol Helmi Mohd Yusof, Siddharth Thokchom, Moh Yasin, Sulaiman Wadi Harun

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17 Citations (Scopus)

Abstract

This paper reported a new humidity sensor, employing microfiber loop resonator (MLR) coated with Zinc Oxide (ZnO) as a probe. The MLR was constructed from a silica tapered fiber with a waist diameter of 7 µm, which was prepared using flame brushing technique. The self-touching loop was coated by ZnO using sol–gel method. A significant response to humidity changes from 35%RH to 85%RH was observed due to the changeable refractive index of the ZnO coating material which modified the light propagation at the output of the MLR. The result shows that the sensitivity of the proposed sensor increases by a factor of 2 as compared to the uncoated MLR. The output power of the ZnO coated MLR drops linearly from −29.3 dBm to −43 dBm when relative humidity increases from 35%RH to 85%RH. The linearity and resolution of the ZnO coated MLR also outperformed the uncoated MLR with 99.4% and 0.013%RH respectively.

Original language	English
Article number	102080
Journal	Optical Fiber Technology
Volume	54
DOIs	https://doi.org/10.1016/j.yofte.2019.102080
Publication status	Published - Jan 2020

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title = "ZnO nanorods coated microfiber loop resonator for relative humidity sensing",

abstract = "This paper reported a new humidity sensor, employing microfiber loop resonator (MLR) coated with Zinc Oxide (ZnO) as a probe. The MLR was constructed from a silica tapered fiber with a waist diameter of 7 µm, which was prepared using flame brushing technique. The self-touching loop was coated by ZnO using sol–gel method. A significant response to humidity changes from 35%RH to 85%RH was observed due to the changeable refractive index of the ZnO coating material which modified the light propagation at the output of the MLR. The result shows that the sensitivity of the proposed sensor increases by a factor of 2 as compared to the uncoated MLR. The output power of the ZnO coated MLR drops linearly from −29.3 dBm to −43 dBm when relative humidity increases from 35%RH to 85%RH. The linearity and resolution of the ZnO coated MLR also outperformed the uncoated MLR with 99.4% and 0.013%RH respectively.",

author = "{Adnan Zain}, Huda and {Hafiz Jali}, Mohd and {Rafis Abdul Rahim}, Hazli and {Ashadi Md Johari}, Md and {Helmi Mohd Yusof}, Haziezol and Siddharth Thokchom and Moh Yasin and {Wadi Harun}, Sulaiman",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",

year = "2020",

month = jan,

doi = "10.1016/j.yofte.2019.102080",

language = "English",

volume = "54",

journal = "Optical Fiber Technology",

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T1 - ZnO nanorods coated microfiber loop resonator for relative humidity sensing

AU - Adnan Zain, Huda

AU - Hafiz Jali, Mohd

AU - Rafis Abdul Rahim, Hazli

AU - Ashadi Md Johari, Md

AU - Helmi Mohd Yusof, Haziezol

AU - Thokchom, Siddharth

AU - Yasin, Moh

AU - Wadi Harun, Sulaiman

PY - 2020/1

Y1 - 2020/1

N2 - This paper reported a new humidity sensor, employing microfiber loop resonator (MLR) coated with Zinc Oxide (ZnO) as a probe. The MLR was constructed from a silica tapered fiber with a waist diameter of 7 µm, which was prepared using flame brushing technique. The self-touching loop was coated by ZnO using sol–gel method. A significant response to humidity changes from 35%RH to 85%RH was observed due to the changeable refractive index of the ZnO coating material which modified the light propagation at the output of the MLR. The result shows that the sensitivity of the proposed sensor increases by a factor of 2 as compared to the uncoated MLR. The output power of the ZnO coated MLR drops linearly from −29.3 dBm to −43 dBm when relative humidity increases from 35%RH to 85%RH. The linearity and resolution of the ZnO coated MLR also outperformed the uncoated MLR with 99.4% and 0.013%RH respectively.

AB - This paper reported a new humidity sensor, employing microfiber loop resonator (MLR) coated with Zinc Oxide (ZnO) as a probe. The MLR was constructed from a silica tapered fiber with a waist diameter of 7 µm, which was prepared using flame brushing technique. The self-touching loop was coated by ZnO using sol–gel method. A significant response to humidity changes from 35%RH to 85%RH was observed due to the changeable refractive index of the ZnO coating material which modified the light propagation at the output of the MLR. The result shows that the sensitivity of the proposed sensor increases by a factor of 2 as compared to the uncoated MLR. The output power of the ZnO coated MLR drops linearly from −29.3 dBm to −43 dBm when relative humidity increases from 35%RH to 85%RH. The linearity and resolution of the ZnO coated MLR also outperformed the uncoated MLR with 99.4% and 0.013%RH respectively.

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DO - 10.1016/j.yofte.2019.102080

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SN - 1068-5200

VL - 54

JO - Optical Fiber Technology

JF - Optical Fiber Technology

M1 - 102080

ER -

ZnO nanorods coated microfiber loop resonator for relative humidity sensing

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