A 1 × 2 optical switch using one multimode interference region

A 1 × 2 optical switch using only one multimode interference (MMI) region is designed and demonstrated in GaAs/AlGaAs. This design makes a single MMI region works as MMI coupler using paired interference at “off” state and symmetric interference at “on” state. By injecting a current of 110 mA, the m...

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Bibliographic Details
Published inOptics communications Vol. 281; no. 18; pp. 4616 - 4618
Main Authors Yin, Rui, Teng, Jinghua, Chua, Soojin
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2008
Subjects
Multimode interference
Optical planar waveguide couplers
Optical switches
Optical switches
Multimode interference
Optical planar waveguide couplers
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Summary:A 1 × 2 optical switch using only one multimode interference (MMI) region is designed and demonstrated in GaAs/AlGaAs. This design makes a single MMI region works as MMI coupler using paired interference at “off” state and symmetric interference at “on” state. By injecting a current of 110 mA, the measured on/off ratio and crosstalk are 23 dB and 33 dB, respectively in the demonstrated device with GaAs/GaAlAs.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2008.05.042