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Apodized focusing subwavelength grating couplers for suspended membrane waveguides

Apodized focusing subwavelength grating couplers for suspended membrane waveguides
Apodized focusing subwavelength grating couplers for suspended membrane waveguides
We demonstrate an apodized focusing subwavelength grating (SWG) for suspended membrane waveguides on silicon-on-insulator. Finite-difference time-domain simulation predicts -1.7 dB coupling efficiency and a 3 dB bandwidth of similar to 50 nm for the transverse-magnetic mode apodized SWG, which has 98% field overlap with propagation mode in the single mode fiber. A modified phase matching formula is proposed to design the focusing apodized SWG. Better than -3.0 dB coupling efficiency and a 3 dB optical bandwidth of similar to 50 nm is demonstrated experimentally.
0003-6951
1-4
Cheng, Zhenzhou
3f15783f-7ba2-4235-9f07-8130fc78ac0f
Chen, Xia
64f6ab92-ca11-4489-8c03-52bc986209ae
Wong, Chi Yan
72d039c8-cbf0-4ab2-babf-6534d5997de8
Xu, Ke
283b7469-7b53-403f-9583-2c95e7377969
Tsang, Hon Ki
4442683a-3892-4ea2-aaa7-ec5224481282
Cheng, Zhenzhou
3f15783f-7ba2-4235-9f07-8130fc78ac0f
Chen, Xia
64f6ab92-ca11-4489-8c03-52bc986209ae
Wong, Chi Yan
72d039c8-cbf0-4ab2-babf-6534d5997de8
Xu, Ke
283b7469-7b53-403f-9583-2c95e7377969
Tsang, Hon Ki
4442683a-3892-4ea2-aaa7-ec5224481282

Cheng, Zhenzhou, Chen, Xia, Wong, Chi Yan, Xu, Ke and Tsang, Hon Ki (2012) Apodized focusing subwavelength grating couplers for suspended membrane waveguides. Applied Physics Letters, 101 (10), 1-4. (doi:10.1063/1.4750071).

Record type: Article

Abstract

We demonstrate an apodized focusing subwavelength grating (SWG) for suspended membrane waveguides on silicon-on-insulator. Finite-difference time-domain simulation predicts -1.7 dB coupling efficiency and a 3 dB bandwidth of similar to 50 nm for the transverse-magnetic mode apodized SWG, which has 98% field overlap with propagation mode in the single mode fiber. A modified phase matching formula is proposed to design the focusing apodized SWG. Better than -3.0 dB coupling efficiency and a 3 dB optical bandwidth of similar to 50 nm is demonstrated experimentally.

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More information

Accepted/In Press date: 20 August 2012
e-pub ahead of print date: 4 September 2012
Published date: 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378482
URI: https://eprints.soton.ac.uk/id/eprint/378482
ISSN: 0003-6951
PURE UUID: 2f83f858-f451-4a97-a3a5-2d890ea4608d
ORCID for Xia Chen: ORCID iD orcid.org/0000-0002-0994-5401

Catalogue record

Date deposited: 29 Jun 2015 10:44
Last modified: 29 Oct 2019 01:39

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