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Tailoring mode splitting and degeneracy in silicon triply resonant nanobeam cavities

Tailoring mode splitting and degeneracy in silicon triply resonant nanobeam cavities
Tailoring mode splitting and degeneracy in silicon triply resonant nanobeam cavities
We investigate the use of coupled silicon nanobeam cavities for achieving multiple resonances as a photonic dedicated platform for nonlinear signal processing and sensing. The transmission spectra of the triple-coupled cavities were measured, and high quality factors, up to about 80,000, have been experimentally reported. By precisely varying the positions of three cavities vertically and horizontally, evolutions of the supermodes were fully mapped, in good agreement with the simulation designs. Some specific and interesting properties such as the dark state of the system, leading to unique transmission spectra, have been clearly observed. Based on a geometrical control of the structure, the three resonances can be tuning independently, and degeneracy modes emerge in some configurations when the distance parameters are properly chosen. This triple-resonant device is expected to enable the adjustment of third-order nonlinear properties in silicon photonics, and it is also a candidate for sensing or reconfigurable and programmable photonics.
0740-3224
1267-1272
Cui, Xin
ef72230b-063d-4dac-8584-0edc7ee127c6
Zhang, Weiwei
1a783f97-c5ac-49e9-a5a0-49b8b2efab36
Zhang, Jianhao
2c8408e4-4cdb-48e0-a1f8-58136e72019e
Le Roux, Xavier
8207f172-0785-4e0e-b132-f456c51153dd
Alonso-Ramos, Carlos
93f2937e-a94b-4b66-b6fc-276efa88272f
Vivien, Laurent
59537381-cb28-458b-9bca-2f76ce99b57a
He, Jian-Jun
97e9788f-6e36-4a6b-ac1c-094817d95ce5
Cassan, Eric
7214d094-d439-4a3c-a4f3-5d52653df6c7
Cui, Xin
ef72230b-063d-4dac-8584-0edc7ee127c6
Zhang, Weiwei
1a783f97-c5ac-49e9-a5a0-49b8b2efab36
Zhang, Jianhao
2c8408e4-4cdb-48e0-a1f8-58136e72019e
Le Roux, Xavier
8207f172-0785-4e0e-b132-f456c51153dd
Alonso-Ramos, Carlos
93f2937e-a94b-4b66-b6fc-276efa88272f
Vivien, Laurent
59537381-cb28-458b-9bca-2f76ce99b57a
He, Jian-Jun
97e9788f-6e36-4a6b-ac1c-094817d95ce5
Cassan, Eric
7214d094-d439-4a3c-a4f3-5d52653df6c7

Cui, Xin, Zhang, Weiwei, Zhang, Jianhao, Le Roux, Xavier, Alonso-Ramos, Carlos, Vivien, Laurent, He, Jian-Jun and Cassan, Eric (2019) Tailoring mode splitting and degeneracy in silicon triply resonant nanobeam cavities. Journal of the Optical Society of America B, 36 (5), 1267-1272. (doi:10.1364/JOSAB.36.001267).

Record type: Article

Abstract

We investigate the use of coupled silicon nanobeam cavities for achieving multiple resonances as a photonic dedicated platform for nonlinear signal processing and sensing. The transmission spectra of the triple-coupled cavities were measured, and high quality factors, up to about 80,000, have been experimentally reported. By precisely varying the positions of three cavities vertically and horizontally, evolutions of the supermodes were fully mapped, in good agreement with the simulation designs. Some specific and interesting properties such as the dark state of the system, leading to unique transmission spectra, have been clearly observed. Based on a geometrical control of the structure, the three resonances can be tuning independently, and degeneracy modes emerge in some configurations when the distance parameters are properly chosen. This triple-resonant device is expected to enable the adjustment of third-order nonlinear properties in silicon photonics, and it is also a candidate for sensing or reconfigurable and programmable photonics.

Full text not available from this repository.

More information

Accepted/In Press date: 27 March 2019
e-pub ahead of print date: 27 March 2019
Published date: May 2019

Identifiers

Local EPrints ID: 441962
URI: http://eprints.soton.ac.uk/id/eprint/441962
ISSN: 0740-3224
PURE UUID: a0a9224c-325a-4681-b1f4-f23bfe0996f9

Catalogue record

Date deposited: 03 Jul 2020 16:30
Last modified: 06 Oct 2020 17:12

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