Broadband focusing grating couplers for suspended-membrane waveguides
Broadband focusing grating couplers for suspended-membrane waveguides
We propose and demonstrate broadband focusing grating couplers for suspended-membrane waveguides on silicon-on-insulator both in near-infrared (near-IR) and in mid-IR wavelength range. Finite-difference time-domain simulation predicts similar to 100 nm 3 dB bandwidth with -1.7 dB coupling efficiency for an apodized grating in near-IR. -3.5 dB maximum coupling efficiency and similar to 90 nm 3 dB bandwidth are realized experimentally. In mid-IR, -5.5 dB maximum coupling efficiency from a uniform focusing grating is measured at 2.75 µm, and similar to 500 nm 3 dB bandwidth is predicted theoretically.
5181-5183
Cheng, Zhenzhou
3f15783f-7ba2-4235-9f07-8130fc78ac0f
Chen, Xia
64f6ab92-ca11-4489-8c03-52bc986209ae
Yan Wong, Chi
63a9bac7-fed9-49e6-b1ac-caf7742c388f
Xu, Ke
283b7469-7b53-403f-9583-2c95e7377969
Ki Tsang, Hon
2d37c836-adea-4a0b-96fe-2b3ea335f84a
15 December 2012
Cheng, Zhenzhou
3f15783f-7ba2-4235-9f07-8130fc78ac0f
Chen, Xia
64f6ab92-ca11-4489-8c03-52bc986209ae
Yan Wong, Chi
63a9bac7-fed9-49e6-b1ac-caf7742c388f
Xu, Ke
283b7469-7b53-403f-9583-2c95e7377969
Ki Tsang, Hon
2d37c836-adea-4a0b-96fe-2b3ea335f84a
Cheng, Zhenzhou, Chen, Xia, Yan Wong, Chi, Xu, Ke and Ki Tsang, Hon
(2012)
Broadband focusing grating couplers for suspended-membrane waveguides.
Optics Letters, 37 (24), .
(doi:10.1364/OL.37.005181).
Abstract
We propose and demonstrate broadband focusing grating couplers for suspended-membrane waveguides on silicon-on-insulator both in near-infrared (near-IR) and in mid-IR wavelength range. Finite-difference time-domain simulation predicts similar to 100 nm 3 dB bandwidth with -1.7 dB coupling efficiency for an apodized grating in near-IR. -3.5 dB maximum coupling efficiency and similar to 90 nm 3 dB bandwidth are realized experimentally. In mid-IR, -5.5 dB maximum coupling efficiency from a uniform focusing grating is measured at 2.75 µm, and similar to 500 nm 3 dB bandwidth is predicted theoretically.
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Accepted/In Press date: November 2012
e-pub ahead of print date: 12 December 2012
Published date: 15 December 2012
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 378481
URI: http://eprints.soton.ac.uk/id/eprint/378481
ISSN: 0146-9592
PURE UUID: 4432452b-9d5a-4ee7-b45f-c86757e2f3c3
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Date deposited: 29 Jun 2015 10:50
Last modified: 14 Mar 2024 20:24
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Contributors
Author:
Zhenzhou Cheng
Author:
Xia Chen
Author:
Chi Yan Wong
Author:
Ke Xu
Author:
Hon Ki Tsang
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