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Browse Journals & Magazines > Photonics Technology Letters, ...> Volume:22 Issue:17 Help

An Ultracompact Directional Coupler Based on GaAs Cross-Slot Waveguide

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5 Author(s)
Xiaoguang Tu ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; Ang, S.S.N. ; Chew, A.B. ; Jinghua Teng
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We experimentally realize a cross-slot waveguide based on GaAs-AlGaAs-GaAs substrate carrying both of transverse-electric slot mode and transverse-magnetic slot mode. A low refractive index AlOx layer is formed between two high index GaAs layers by thermal oxidation method. A polarization splitter is obtained through a 25-μm-long ultracompact directional coupler based on the waveguide. The measured result fits well with calculation using the beam-propagation method.

Published in:
Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 17 )

Date of Publication: Sept.1, 2010

Page(s):
1324 - 1326
ISSN :
1041-1135
INSPEC Accession Number:
11472495
Digital Object Identifier :
10.1109/LPT.2010.2055234
Date of Publication :
28 June 2010
Date of Current Version :
12 August 2010
Issue Date :
Sept.1, 2010
Sponsored by :
IEEE Photonics Society

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