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SOI ring resonators with controllable MMI coupler sections

Hu, Y, Gardes, FY, Mashanovich, GZ and Reed, GT (2011) SOI ring resonators with controllable MMI coupler sections In: Silicon Photonics VI, 2011-01-23 - 2011-01-26, San Francisco, USA.

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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.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Authors :
NameEmailORCID
Hu, Yy.hu@surrey.ac.ukUNSPECIFIED
Gardes, FYUNSPECIFIEDUNSPECIFIED
Mashanovich, GZg.mashanovich@surrey.ac.ukUNSPECIFIED
Reed, GTg.reed@surrey.ac.ukUNSPECIFIED
Date : 2011
Identification Number : 10.1117/12.887692
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:03
Last Modified : 17 May 2017 15:01
URI: http://epubs.surrey.ac.uk/id/eprint/833810

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