Add to BibSonomy
Abstract
In this study, we demonstrate a novel, to the best of our knowledge, integrated indium phosphide (InP) and silicon nitride (${\rm Si}_3{\rm N}_4$) waveguide platform, which is based on interlayer coupling, to achieve heterogeneous integration of a photodetector and waveguide ring resonator firstly. In order to improve the gyro bias stability, the ${\rm Si}_3{\rm N}_4$ and InP waveguides were designed with a high polarization extinction ratio and ultra-low loss. Three-dimensional finite difference time domain methods are used to optimize the InP taper dimensions to provide efficient optical coupling between the ${\rm Si}_3{\rm N}_4$ and InP waveguides. The optical coupler with a length of 100 µm is designed to achieve optical coupling between the ${\rm Si}_3{\rm N}_4$ and InP waveguides while maintaining its state of polarization all the way from the taper waveguides. The coupling efficiency of the optimized interlayer coupler has been improved to about 99.5%.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Changkun Feng, Dengke Zhang, Yonggui Zhang, Chen Qing, Honghao Ma, Hui Li, and Lishuang Feng
Opt. Express 29(26) 43875-43884 (2021)
Fang Wang, Yake Chen, Tao Ma, Heng Liu, Xu Wang, and Chan Jin
Appl. Opt. 60(8) 2441-2449 (2021)
D. Chatzitheocharis, D. Ketzaki, C. Calò, C. Caillaud, and K. Vyrsokinos
Opt. Express 28(23) 34219-34236 (2020)