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Title: Mode control in planar waveguide grating couplers with double surface corrugation
Authors: Xiao, Zhe
Liow, Tsung-Yang
Zhang, Jing
Silalahi, Samson T. H.
Shum, Perry Ping
Luan, Feng
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: © 2012 IEEE
Xiao, Z., Liow, T. Y., Zhang, J., Silalahi, S. T. H., Shum, P., & Luan, F. (2012). Mode control in planar waveguide grating couplers with double surface corrugation. IEEE photonics technology letters, 24(19), 1722-1725.
Series/Report no.: IEEE photonics technology letters
Abstract: Grating couplers with double surface corrugation are proposed to adjust the resonance behavior of both TE and TM modes simultaneously. Through proper selection of parameters, we designed a polarization-independent grating coupler operating at 1.55-μm telecommunication wavelength. Efficiency is achieved at around 55% for both TE and TM modes, and the polarization-dependent loss is <; 0.05 dB within the spectral window from 1544 to 1561 nm. Furthermore, a double-channel grating coupler is proposed to excite the TE and TM modes at 1.31 and 1.49 μm, respectively. The achievable efficiency is around 60% for both channels with good uniformity.
ISSN: 1041-1135
DOI: 10.1109/LPT.2012.2213300
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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