Abstract
Interlayer grating-to-grating optical interconnect coupling efficiency is simulated and optimized using rigorous coupled-wave analysis (RCWA) for the case of binary rectangular-groove gratings. The “equivalent index slab (EIS)” concept is proposed to alleviate the numerical sensitivity problem inherent in the RCWA-leaky-wave approach, making the method applicable to any multilayer structure that has an arbitrary grating profile, large refractive-index differences, and a limited grating length. The method is easy to implement and computationally efficient and can provide optimal designs based on the system designer’s need. To determine the viability of the RCWA-EIS approach, results are compared to those obtained using the finite-difference time-domain method, and an excellent agreement is found.
© 2016 Optical Society of America
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Congshan Wan, Thomas K. Gaylord, and Muhannad S. Bakir, "Grating design for interlayer optical interconnection of in-plane waveguides: erratum," Appl. Opt. 55, 7987-7987 (2016)https://opg.optica.org/ao/abstract.cfm?uri=ao-55-28-7987
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