High-index contrast grating based broadband out-coupler on SOI |
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Authors: | Sunny Chugh Mukesh Kumar |
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Institution: | Department of Electronics and Communication Engineering, Thapar University, Patiala 147004, Punjab, India |
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Abstract: | An efficient broadband out-coupler on silicon-on-insulator (SOI) with high-index contrast grating (HCG) is proposed. The presence of a silicon-air (high-index contrast) grating on the top silicon layer in SOI allows a strong interaction between the guided mode and the grating. The broadband design of the out-coupler is presented by optimising the various grating parameters. The design analysis and simulation of such an out-coupler is performed with finite difference method. Coupling efficiency of 54% is achieved over an ultra-wide wavelength range from 1500 nm to 1650 nm. |
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Keywords: | Grating out-coupler High-index contrast grating (HCG) Silicon-on-insulator (SOI) |
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