Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

Mian Yao; Xia Ouyang; Jushuai Wu; Aping Zhang; Hwayaw Tam; Ping Kong Alexander Wai

doi:10.3390/s18061825

Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

Mian Yao, Xia Ouyang, Jushuai Wu, Aping Zhang, Hwayaw Tam, Ping Kong Alexander Wai

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

Miniature optical fiber-tip sensors based on directly μ-printed polymer suspended-microbea ms are presented. With an in-house optical 3D μ-printing technology, SU-8 suspended-microbeams are fabricated in situ to form Fabry-Pérot (FP) micro-interferometers on the end face of standard single-mode optical fiber. Optical reflection spectra of the fabricated FP micro-interferometers are measured and fast Fourier transform is applied to analyze the cavity of micro-interferometers. The applications of the optical fiber-tip sensors for refractive index (RI) sensing and pressure sensing, which showed 917.3 nm/RIU to RI change and 4.29 nm/MPa to pressure change, respectively, are demonstrated in the experiments. The sensors and their optical μ-printing method unveil a new strategy to integrate complicated microcomponents on optical fibers toward ‘lab-on-fiber’ devices and applications.

Original language	English
Pages (from-to)	1825
Journal	Sensors (Switzerland)
Volume	18
Issue number	6
DOIs	https://doi.org/10.3390/s18061825
Publication status	Published - 5 Jun 2018

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title = "Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams",

abstract = "Miniature optical fiber-tip sensors based on directly μ-printed polymer suspended-microbea ms are presented. With an in-house optical 3D μ-printing technology, SU-8 suspended-microbeams are fabricated in situ to form Fabry-P{\'e}rot (FP) micro-interferometers on the end face of standard single-mode optical fiber. Optical reflection spectra of the fabricated FP micro-interferometers are measured and fast Fourier transform is applied to analyze the cavity of micro-interferometers. The applications of the optical fiber-tip sensors for refractive index (RI) sensing and pressure sensing, which showed 917.3 nm/RIU to RI change and 4.29 nm/MPa to pressure change, respectively, are demonstrated in the experiments. The sensors and their optical μ-printing method unveil a new strategy to integrate complicated microcomponents on optical fibers toward {\textquoteleft}lab-on-fiber{\textquoteright} devices and applications.",

author = "Mian Yao and Xia Ouyang and Jushuai Wu and Aping Zhang and Hwayaw Tam and Wai, {Ping Kong Alexander}",

year = "2018",

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AU - Yao, Mian

AU - Ouyang, Xia

AU - Wu, Jushuai

AU - Zhang, Aping

AU - Tam, Hwayaw

AU - Wai, Ping Kong Alexander

PY - 2018/6/5

Y1 - 2018/6/5

N2 - Miniature optical fiber-tip sensors based on directly μ-printed polymer suspended-microbea ms are presented. With an in-house optical 3D μ-printing technology, SU-8 suspended-microbeams are fabricated in situ to form Fabry-Pérot (FP) micro-interferometers on the end face of standard single-mode optical fiber. Optical reflection spectra of the fabricated FP micro-interferometers are measured and fast Fourier transform is applied to analyze the cavity of micro-interferometers. The applications of the optical fiber-tip sensors for refractive index (RI) sensing and pressure sensing, which showed 917.3 nm/RIU to RI change and 4.29 nm/MPa to pressure change, respectively, are demonstrated in the experiments. The sensors and their optical μ-printing method unveil a new strategy to integrate complicated microcomponents on optical fibers toward ‘lab-on-fiber’ devices and applications.

AB - Miniature optical fiber-tip sensors based on directly μ-printed polymer suspended-microbea ms are presented. With an in-house optical 3D μ-printing technology, SU-8 suspended-microbeams are fabricated in situ to form Fabry-Pérot (FP) micro-interferometers on the end face of standard single-mode optical fiber. Optical reflection spectra of the fabricated FP micro-interferometers are measured and fast Fourier transform is applied to analyze the cavity of micro-interferometers. The applications of the optical fiber-tip sensors for refractive index (RI) sensing and pressure sensing, which showed 917.3 nm/RIU to RI change and 4.29 nm/MPa to pressure change, respectively, are demonstrated in the experiments. The sensors and their optical μ-printing method unveil a new strategy to integrate complicated microcomponents on optical fibers toward ‘lab-on-fiber’ devices and applications.

U2 - 10.3390/s18061825

DO - 10.3390/s18061825

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Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

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