A grating-based coupler for fiber-to-silicon waveguide excitation
A grating-based coupler for fiber-to-silicon waveguide excitation
Recently there has been a strong trend to fabricate smaller photonic devices. In the literature, the problem of coupling optical fibres with thin semiconductor waveguides has not been solved sufficiently well to obtain both high coupling efficiency and good fabrication tolerances. This paper discusses a new approach, the Dual Grating-Assisted Directional Coupling (DGADC), which can result in a robust and very efficient device, with relaxed fabrication tolerances. Theoretical investigation of the coupler is presented. Coupling efficiency and device length are determined as functions of layer thicknesses and refractive indices, grating periods, depths and duty ratios, and finally wavelength. Fabrication of the coupler is also given, as well as preliminary experimental results.
381-392
Mashanovich, G.Z.
c806e262-af80-4836-b96f-319425060051
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Passaro, V.M.N.
828f0106-cfbc-47ea-b672-7185387214e5
Headley, W.
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Josey, M.
85a736c7-03da-4c28-8365-b7d6fa83a61c
Ensell, G.
48fe0996-1c6b-4816-8bd0-0a3234d36ae8
Atta, R.
c8044599-306d-44a7-a48e-886e1f7ae45a
Evans, A.
1cfe5902-0508-4a86-bbe2-72aa3a927f1a
18 August 2004
Mashanovich, G.Z.
c806e262-af80-4836-b96f-319425060051
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Passaro, V.M.N.
828f0106-cfbc-47ea-b672-7185387214e5
Headley, W.
7a9a21d1-2aa7-41fd-af72-3f38b02b1d13
Josey, M.
85a736c7-03da-4c28-8365-b7d6fa83a61c
Ensell, G.
48fe0996-1c6b-4816-8bd0-0a3234d36ae8
Atta, R.
c8044599-306d-44a7-a48e-886e1f7ae45a
Evans, A.
1cfe5902-0508-4a86-bbe2-72aa3a927f1a
Mashanovich, G.Z., Reed, G.T., Passaro, V.M.N., Headley, W., Josey, M., Ensell, G., Atta, R. and Evans, A.
(2004)
A grating-based coupler for fiber-to-silicon waveguide excitation.
In Integrated Optics and Photonic Integrated Circuits.
vol. 5451,
SPIE.
.
(doi:10.1117/12.545920).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Recently there has been a strong trend to fabricate smaller photonic devices. In the literature, the problem of coupling optical fibres with thin semiconductor waveguides has not been solved sufficiently well to obtain both high coupling efficiency and good fabrication tolerances. This paper discusses a new approach, the Dual Grating-Assisted Directional Coupling (DGADC), which can result in a robust and very efficient device, with relaxed fabrication tolerances. Theoretical investigation of the coupler is presented. Coupling efficiency and device length are determined as functions of layer thicknesses and refractive indices, grating periods, depths and duty ratios, and finally wavelength. Fabrication of the coupler is also given, as well as preliminary experimental results.
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More information
Published date: 18 August 2004
Venue - Dates:
SPIE 5350 : Photonics West 2004: Optical Components and Materials, San José, USA, 2004-01-24 - 2004-01-29
Organisations:
Nanoelectronics and Nanotechnology
Identifiers
Local EPrints ID: 260466
URI: http://eprints.soton.ac.uk/id/eprint/260466
ISSN: 0277-786X
PURE UUID: 3f524151-e660-43d7-918c-41820b76bcf5
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Date deposited: 07 Feb 2005
Last modified: 29 Oct 2024 02:45
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Contributors
Author:
G.Z. Mashanovich
Author:
G.T. Reed
Author:
V.M.N. Passaro
Author:
W. Headley
Author:
M. Josey
Author:
G. Ensell
Author:
R. Atta
Author:
A. Evans
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