Silicon photonics nonlinear switch as conditional circulator for single-aperture LIDAR systems

Mingfei Ding; Yiwei Xie; Changping Zhang; Min Teng; Abu Naim R. Ahmed; Reza Safian; Swapnajit Chakravarty; Pengcheng Jiao; Daoxin Dai; Leimeng Zhuang

doi:10.1117/12.2583184

5 March 2021 Silicon photonics nonlinear switch as conditional circulator for single-aperture LIDAR systems

Mingfei Ding, Yiwei Xie, Changping Zhang, Min Teng, Abu Naim R. Ahmed, Reza Safian, Swapnajit Chakravarty, Pengcheng Jiao, Daoxin Dai, Leimeng Zhuang

Author Affiliations +

Proceedings Volume 11691, Silicon Photonics XVI; 116910L (2021) https://doi.org/10.1117/12.2583184
Event: SPIE OPTO, 2021, Online Only

Abstract

LIDAR on a silicon chip holds strong potentials for LIDAR system solutions featuring low cost, small size, and high robustness. In line with this effort, on-chip circulators are of great interest as they bring significant benefit for system complexity reduction and SNR improvement by enabling the LIDAR transmitter and receiver to share a single common aperture. Here, we present our recent study on passive silicon photonics nonlinear switches as conditional circulators for LIDAR applications. We propose a device implementation to address the nonlinear switch working principle by controlling waveguide nonlinear coefficient using sub-wavelength gratings. This implementation is foundry-compatible using only regular passive silicon waveguide components and are fully demonstrated in the experiment. In addition, we propose a sub-splitting coupler-based switch potentially can achieve a better fabrication tolerance than sub-wavelength grating-based switch. This work builds up signal processing functions in silicon photonics technology for optical communication and sensing applications. In particular, for LIDAR applications, this work contributes to the critical components of important use, and the easy integration with other existing functions such as optical phased arrays and spectral filters pronounces the potential for LIDAR on a silicon chip.

Conference Presentation

Citation Download Citation

Mingfei Ding, Yiwei Xie, Changping Zhang, Min Teng, Abu Naim R. Ahmed, Reza Safian, Swapnajit Chakravarty, Pengcheng Jiao, Daoxin Dai, and Leimeng Zhuang "Silicon photonics nonlinear switch as conditional circulator for single-aperture LIDAR systems", Proc. SPIE 11691, Silicon Photonics XVI, 116910L (5 March 2021); https://doi.org/10.1117/12.2583184

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available