Abstract
In this work, we design a silicon-on-insulator (SOI) sidewall grating with tunable wavelength, delay, and bandwidth through thermal tuning. Incorporating uniform sidewall corrugations and a linearly chirped rib waveguide, the thermo-optic effect imposed on chirped rib waveguide changes the effective refractive index, due to the resultant of the temperature gradient. Consequently, tunable wavelength, delay, and bandwidth in SOI sidewall grating are achieved. In the numerical simulations, the designed SOI grating is demonstrated with a tunable wavelength from 1 560.7 nm to 1 561.9 nm, a tunable delay from 0 to 38 ps, and a tunable bandwidth from 1 nm to 1.5 nm.
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This work has been supported by the National Key Research and Development Program of China (No.2019YFB2203601), and the Fundamental Research Funds for the Central Universities (No.2682020ZT31).
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Ding, Jy., Zou, Xh., Zou, F. et al. Thermal tuning of chirped SOI sidewall grating for tunable wavelength, delay, and bandwidth. Optoelectron. Lett. 17, 205–208 (2021). https://doi.org/10.1007/s11801-021-0066-x
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DOI: https://doi.org/10.1007/s11801-021-0066-x