Add to BibSonomy
Abstract
We propose and demonstrate experimentally tilted subwavelength grating (SWG) waveguide Bragg gratings (WBGs). By tilting the SWG segments and optimizing the duty cycle, we can achieve polarization-dependent tuning of the spectral response of the SWG WBG, namely, the spectral response of the fundamental transverse electric (TE) mode shifts toward shorter wavelengths, while that for the transverse magnetic (TM) mode remains almost unchanged. In particular, for tilting angles of 5° and 30°, we can obtain a blueshift in the Bragg wavelength of 7 and 35 nm for the TE mode, while the Bragg wavelength for the TM mode remains within 0.5 nm. The proposed tilted SWG WBGs provide a novel method to manage polarization and/or obtain polarization-dependent wavelength selectivity with integrated WBG devices.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Hao Sun and Lawrence R. Chen
Opt. Express 31(2) 1214-1223 (2023)
José Manuel Luque-González, Alaine Herrero-Bermello, Alejandro Ortega-Moñux, Íñigo Molina-Fernández, Aitor V. Velasco, Pavel Cheben, Jens H. Schmid, Shurui Wang, and Robert Halir
Opt. Lett. 43(19) 4691-4694 (2018)
Lu Liu, Qingzhong Deng, and Zhiping Zhou
Opt. Lett. 41(21) 5126-5129 (2016)