Cavity modes modulation using photonic molecules
Cavity modes modulation using photonic molecules
Interaction of whispering gallery modes (WGMs) in two coupled microcavities, referred to as a photonic molecule, was investigated experimentally. The study involved a systematic examination of the modes of the coupled cavities by manipulating the cavity gain coefficients and coupling strength. The cavity gain coefficients were adjusted by using dye-doped and un-doped microcavities, while the coupling strength was varied by altering the separation between the microcavities. The resulting observations include splitting and merging of the eigenmode frequencies. These experimental findings were corroborated by the predictions of an extended coupled mode theory (CMT) and numerical simulations. Additionally, it was discovered that coupled microcavities offer advantages over single cavities in certain applications where tunability of cavity modes is required.
Asymmetric modes, Coupled mode theory, Opposite gain coefficients, Photonic molecules, Whispering gallery modes
Agrawal, Tulika
6e00d242-f6b8-4547-8a14-71ac664e7708
Singh, Surendra
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Bhattacharya, Shubhayan
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Veluthandath, Aneesh V.
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Bisht, Prem B.
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December 2023
Agrawal, Tulika
6e00d242-f6b8-4547-8a14-71ac664e7708
Singh, Surendra
7f06f56b-abd2-4bfe-9c05-49a979d2d940
Bhattacharya, Shubhayan
64fa4af8-6833-4075-b4ad-f86b787a656f
Veluthandath, Aneesh V.
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Murugan, Ganapathy Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Bisht, Prem B.
42de6f45-9306-42e7-856e-c90cc980305d
Agrawal, Tulika, Singh, Surendra, Bhattacharya, Shubhayan, Veluthandath, Aneesh V., Lee, Timothy, Murugan, Ganapathy Senthil and Bisht, Prem B.
(2023)
Cavity modes modulation using photonic molecules.
Optik - International Journal for Light and Electron Optics, 295, [171497].
(doi:10.1016/j.ijleo.2023.171497).
Abstract
Interaction of whispering gallery modes (WGMs) in two coupled microcavities, referred to as a photonic molecule, was investigated experimentally. The study involved a systematic examination of the modes of the coupled cavities by manipulating the cavity gain coefficients and coupling strength. The cavity gain coefficients were adjusted by using dye-doped and un-doped microcavities, while the coupling strength was varied by altering the separation between the microcavities. The resulting observations include splitting and merging of the eigenmode frequencies. These experimental findings were corroborated by the predictions of an extended coupled mode theory (CMT) and numerical simulations. Additionally, it was discovered that coupled microcavities offer advantages over single cavities in certain applications where tunability of cavity modes is required.
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Accepted/In Press date: 22 October 2023
e-pub ahead of print date: 29 October 2023
Published date: December 2023
Additional Information:
Funding Information:
We acknowledge financial support from the Ministry of Education, New Delhi (Sanction No. 11/9/2019-U.3 (A) ) and the Science and Engineering Research Board (SERB), New Delhi (Sanction no. CRG/2021/000136 ). SS would like to thank IIT Madras for Visiting Professor appointment.
Publisher Copyright:
© 2023 Elsevier GmbH
Keywords:
Asymmetric modes, Coupled mode theory, Opposite gain coefficients, Photonic molecules, Whispering gallery modes
Identifiers
Local EPrints ID: 484655
URI: http://eprints.soton.ac.uk/id/eprint/484655
ISSN: 0030-4026
PURE UUID: 22d61423-d362-451b-99a2-192fe49e4d0c
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Date deposited: 20 Nov 2023 17:33
Last modified: 18 Mar 2024 03:56
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Contributors
Author:
Tulika Agrawal
Author:
Surendra Singh
Author:
Shubhayan Bhattacharya
Author:
Prem B. Bisht
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