Strain-induced spectral tuning of the whispering gallery modes in a cylindrical micro-resonator formed by a polymer optical fiber

Vishnu Kavungal; Arun Kumar Mallik; Gerald Farrell; Qiang Wu; Yuliya Semenova

doi:10.1364/AO.56.001339

Strain-induced spectral tuning of the whispering gallery modes in a cylindrical micro-resonator formed by a polymer optical fiber

Vishnu Kavungal
, Arun Kumar Mallik
, Gerald Farrell
, Qiang Wu
, Yuliya Semenova

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

Abstract

A mechanical strain assisted technique for spectral tuning of whispering gallery modes (WGM) in a cylindrical micro-resonator formed by a polymer optical fiber (POF) is investigated. WGMs in the POF-based micro-cylinder are excited by evanescent light coupling using a tapered single mode silica fiber. WGMs observed in the transmission spectrum of the silica fiber taper have a high extinction ratio of up to 19 dB and a quality factor (Q-factor) of up to 2.64 × 10⁴. The application of tensile axial strain (με) in the range from 0 to 1746 με (0.17%) to the POF micro-resonator results in a linear shift of the WGM spectrum with a sensitivity of 0.66 pm/με. Under the influence of the applied strain, the WGMs undergo a blue shift and return to their initial spectral positions after the strain is decreased. The proposed strain tunable POF micro-resonator has potential applications in fiber optic sensing and tunable micro lasers.

Original language	English
Pages (from-to)	1339-1345
Number of pages	7
Journal	Applied Optics
Volume	56
Issue number	5
DOIs	https://doi.org/10.1364/AO.56.001339
Publication status	Published - 10 Feb 2017
Externally published	Yes

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title = "Strain-induced spectral tuning of the whispering gallery modes in a cylindrical micro-resonator formed by a polymer optical fiber",

abstract = "A mechanical strain assisted technique for spectral tuning of whispering gallery modes (WGM) in a cylindrical micro-resonator formed by a polymer optical fiber (POF) is investigated. WGMs in the POF-based micro-cylinder are excited by evanescent light coupling using a tapered single mode silica fiber. WGMs observed in the transmission spectrum of the silica fiber taper have a high extinction ratio of up to 19 dB and a quality factor (Q-factor) of up to 2.64 × 104. The application of tensile axial strain (με) in the range from 0 to 1746 με (0.17\%) to the POF micro-resonator results in a linear shift of the WGM spectrum with a sensitivity of 0.66 pm/με. Under the influence of the applied strain, the WGMs undergo a blue shift and return to their initial spectral positions after the strain is decreased. The proposed strain tunable POF micro-resonator has potential applications in fiber optic sensing and tunable micro lasers.",

author = "Vishnu Kavungal and Mallik, \{Arun Kumar\} and Gerald Farrell and Qiang Wu and Yuliya Semenova",

note = "Publisher Copyright: {\textcopyright} 2017 Optical Society of America.",

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TY - JOUR

T1 - Strain-induced spectral tuning of the whispering gallery modes in a cylindrical micro-resonator formed by a polymer optical fiber

AU - Kavungal, Vishnu

AU - Mallik, Arun Kumar

AU - Farrell, Gerald

AU - Wu, Qiang

AU - Semenova, Yuliya

PY - 2017/2/10

Y1 - 2017/2/10

N2 - A mechanical strain assisted technique for spectral tuning of whispering gallery modes (WGM) in a cylindrical micro-resonator formed by a polymer optical fiber (POF) is investigated. WGMs in the POF-based micro-cylinder are excited by evanescent light coupling using a tapered single mode silica fiber. WGMs observed in the transmission spectrum of the silica fiber taper have a high extinction ratio of up to 19 dB and a quality factor (Q-factor) of up to 2.64 × 104. The application of tensile axial strain (με) in the range from 0 to 1746 με (0.17%) to the POF micro-resonator results in a linear shift of the WGM spectrum with a sensitivity of 0.66 pm/με. Under the influence of the applied strain, the WGMs undergo a blue shift and return to their initial spectral positions after the strain is decreased. The proposed strain tunable POF micro-resonator has potential applications in fiber optic sensing and tunable micro lasers.

AB - A mechanical strain assisted technique for spectral tuning of whispering gallery modes (WGM) in a cylindrical micro-resonator formed by a polymer optical fiber (POF) is investigated. WGMs in the POF-based micro-cylinder are excited by evanescent light coupling using a tapered single mode silica fiber. WGMs observed in the transmission spectrum of the silica fiber taper have a high extinction ratio of up to 19 dB and a quality factor (Q-factor) of up to 2.64 × 104. The application of tensile axial strain (με) in the range from 0 to 1746 με (0.17%) to the POF micro-resonator results in a linear shift of the WGM spectrum with a sensitivity of 0.66 pm/με. Under the influence of the applied strain, the WGMs undergo a blue shift and return to their initial spectral positions after the strain is decreased. The proposed strain tunable POF micro-resonator has potential applications in fiber optic sensing and tunable micro lasers.

UR - https://www.scopus.com/pages/publications/85013661676

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DO - 10.1364/AO.56.001339

M3 - Article

AN - SCOPUS:85013661676

SN - 1559-128X

VL - 56

SP - 1339

EP - 1345

JO - Applied Optics

JF - Applied Optics

IS - 5

ER -

Strain-induced spectral tuning of the whispering gallery modes in a cylindrical micro-resonator formed by a polymer optical fiber

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