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Spectral cleaning and output modal transformations in whispering-gallery-mode microresonators

Spectral cleaning and output modal transformations in whispering-gallery-mode microresonators
Spectral cleaning and output modal transformations in whispering-gallery-mode microresonators
A systematic study on the effects of microtaper fiber diameters on the spectral characteristics of a whispering-gallery-mode (WGM) micro-bottle resonator (MBR) is presented. Progressively cleaner and simpler spectra of the MBR were observed when the utilized microtaper fiber waist diameter (Dt) was increased from 2µm to 10µm. The maximum transmission depth at resonance varies with different microtaper fiber utilized from ~20 dB (Dt = 2µm) to ~4 dB (Dt = 10µm). The loaded Q-factors were observed to be unaffected by the increase of Dt with values of > 106 being measured in all cases. Mode transformation of MBR was also experimentally investigated and compared to a microdisc FDTD simulation by studying near-field images of the output beam on the waist of the microtaper fibers. For the first time, experimental observation of mode transformation from LP01 to LP11 across scanned WGM resonances is being reported.
0740-3224
1963-1970
Mohd Nasir, Mohd Narizee
f44744b8-8eb9-4051-b871-0eabda932d37
Murugan, G. Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Mohd Nasir, Mohd Narizee
f44744b8-8eb9-4051-b871-0eabda932d37
Murugan, G. Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701

Mohd Nasir, Mohd Narizee, Murugan, G. Senthil and Zervas, Michael (2016) Spectral cleaning and output modal transformations in whispering-gallery-mode microresonators. Journal of the Optical Society of America B, 33 (9), 1963-1970. (doi:10.1364/JOSAB.33.001963).

Record type: Article

Abstract

A systematic study on the effects of microtaper fiber diameters on the spectral characteristics of a whispering-gallery-mode (WGM) micro-bottle resonator (MBR) is presented. Progressively cleaner and simpler spectra of the MBR were observed when the utilized microtaper fiber waist diameter (Dt) was increased from 2µm to 10µm. The maximum transmission depth at resonance varies with different microtaper fiber utilized from ~20 dB (Dt = 2µm) to ~4 dB (Dt = 10µm). The loaded Q-factors were observed to be unaffected by the increase of Dt with values of > 106 being measured in all cases. Mode transformation of MBR was also experimentally investigated and compared to a microdisc FDTD simulation by studying near-field images of the output beam on the waist of the microtaper fibers. For the first time, experimental observation of mode transformation from LP01 to LP11 across scanned WGM resonances is being reported.

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Spectral-cleaning-and-output-modal-transformations-in-WGM-microresonator_Revised_Final.pdf - Accepted Manuscript
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Accepted/In Press date: 1 August 2016
e-pub ahead of print date: 4 August 2016
Published date: 24 August 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 403812
URI: http://eprints.soton.ac.uk/id/eprint/403812
ISSN: 0740-3224
PURE UUID: cdf38a39-10cf-4915-8299-72ff7f43f04c
ORCID for G. Senthil Murugan: ORCID iD orcid.org/0000-0002-2733-3273
ORCID for Michael Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 13 Dec 2016 10:21
Last modified: 09 Jan 2022 03:20

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Contributors

Author: Mohd Narizee Mohd Nasir
Author: Michael Zervas ORCID iD

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