SOI ring resonators with controllable MMI coupler sections
SOI ring resonators with controllable MMI coupler sections
A ring resonator using a single 2×2 MMI as the coupler section has the distinct advantages of low sensitivity to fabrication error, temperature, wavelength and polarisation. However, the coupling coefficient of the 2×2 MMI coupler is fixed; hence, the performance of this type of device is limited, e.g. transmission spectrum with high extinction ratio is difficult to achieve. We have designed and simulated ring resonators with coupler sections consisting of two 2×2 MMIs and phase shifters, so that the coupling efficiency can be varied from 0% to 100% with relative ease. For a single ring resonator, the transmission spectrum can be controlled to achieve an extinction ratio of >20dB and a spectral bandwidth of <1nm. For a multiple ring filter, the transmission spectrum can be controlled to achieve an extinction ratio of >30dB and a bandwidth of <1nm; in addition, a flat-top transmission spectrum is also achievable. The whole device has a footprint of approximately 200μm by 100μm.
Coupler, Multimode interferometer, Ring resonators, SOI, Temperature control
Hu, Youfang
38fe48b3-1609-4834-ad54-dc823e3a98b3
Gardes, Frédéric Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
17 January 2011
Hu, Youfang
38fe48b3-1609-4834-ad54-dc823e3a98b3
Gardes, Frédéric Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Mashanovich, Goran Z.
c806e262-af80-4836-b96f-319425060051
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
Hu, Youfang, Gardes, Frédéric Y., Mashanovich, Goran Z. and Reed, Graham T.
(2011)
SOI ring resonators with controllable MMI coupler sections.
Kubby, Joel A. and Reed, Graham T.
(eds.)
In Silicon Photonics VI.
vol. 7943,
SPIE.
11 pp
.
(doi:10.1117/12.887692).
Record type:
Conference or Workshop Item
(Paper)
Abstract
A ring resonator using a single 2×2 MMI as the coupler section has the distinct advantages of low sensitivity to fabrication error, temperature, wavelength and polarisation. However, the coupling coefficient of the 2×2 MMI coupler is fixed; hence, the performance of this type of device is limited, e.g. transmission spectrum with high extinction ratio is difficult to achieve. We have designed and simulated ring resonators with coupler sections consisting of two 2×2 MMIs and phase shifters, so that the coupling efficiency can be varied from 0% to 100% with relative ease. For a single ring resonator, the transmission spectrum can be controlled to achieve an extinction ratio of >20dB and a spectral bandwidth of <1nm. For a multiple ring filter, the transmission spectrum can be controlled to achieve an extinction ratio of >30dB and a bandwidth of <1nm; in addition, a flat-top transmission spectrum is also achievable. The whole device has a footprint of approximately 200μm by 100μm.
Text
794311
- Version of Record
Available under License Other.
More information
Published date: 17 January 2011
Venue - Dates:
Silicon Photonics VI, , San Francisco, CA, United States, 2011-01-22 - 2011-01-27
Keywords:
Coupler, Multimode interferometer, Ring resonators, SOI, Temperature control
Identifiers
Local EPrints ID: 481781
URI: http://eprints.soton.ac.uk/id/eprint/481781
ISSN: 0277-786X
PURE UUID: 23e037a0-af06-4ff7-a50e-a5691a35a10c
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Date deposited: 07 Sep 2023 16:37
Last modified: 18 Mar 2024 03:19
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Contributors
Author:
Youfang Hu
Editor:
Joel A. Kubby
Editor:
Graham T. Reed
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