Abstract
Lithium niobate (LiNbO3, LN) is widely used for photonic applications, thanks to its wide transparency range, electro-optic and nonlinear optical properties [1]. Recently available lithium-niobate-on-insulator (LNOI) substrates afford high index contrast and thus tight field confinement in LN photonic devices such as optical modulators and microring resonators [2, 3]. However, similar to other (e.g. SOI) platforms, high-confinement waveguides are strongly birefringent, which leads to e.g. polarization mode dispersion with deleterious effects for delay-based filters, modulators and other signal processing and transmission devices [4]. Here, with vectorial simulations for high-confinement ridge waveguides in LNOI, we show how the interplay of the high birefringence of LN and of the waveguide structure can be employed to achieve birefringence-free designs in a broad spectral range, from 0.8 up to 1.8 μm, through a careful tuning of the LNOI ridge dimensions.
© 2017 IEEE
PDF ArticleMore Like This
Mohammad Amin Baghban, Jean Schollhammer, Carlos Errando-Herranz, Kristinn B. Gylfason, and Katia Gallo
CK_2_6 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2017
Priyank Sain, Gopalkrishna Hegde, and Srinivas Talabattula
JW5B.39 Frontiers in Optics (FiO) 2022
Toijam Sunder Meetei, Seong-Jin Son, Byeongchan Park, Yong-Tak Lee, and Nan Ei Yu
ce_p_4 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2023