Fully integrated hybrid silicon free-space beam steering source with 32 channel phased array

被引：19

作者：

Hulme, J. C. ^{[1
]}

Doylend, J. K. ^{[1
]}

Heck, M. J. R. ^{[1
]}

Peters, J. D. ^{[1
]}

Davenport, M. L. ^{[1
]}

Bovington, J. T. ^{[1
]}

Coldren, L. A. ^{[1
]}

Bowers, J. E. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, ECE Dept, Santa Barbara, CA 93106 USA

来源：

SMART PHOTONIC AND OPTOELECTRONIC INTEGRATED CIRCUITS XVI | 2014年 / 8989卷

关键词：

silicon photonics; LIDAR; free-space communication; optical phased array; laser; tunable laser; hybrid silicon; integrated optics; beam steering; photonic integrated circuit; ON-INSULATOR; LASER;

D O I：

10.1117/12.2044820

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Free-space beam steering using optical phased arrays is a promising method for implementing free-space communication links and Light Detection and Ranging (LIDAR) without the sensitivity to inertial forces and long latencies which characterize moving parts. Implementing this approach on a silicon-based photonic integrated circuit adds the additional advantage of working with highly developed CMOS processing techniques. In this work we discuss our progress in the development of a fully integrated 32 channel PIC with a widely tunable diode laser, a waveguide phased array, an array of fast phase modulators, an array of hybrid III-V/silicon amplifiers, surface gratings, and a graded index lens (GRIN) feeding an array of photodiodes for feedback control. The PIC has been designed to provide beam steering across a 15 degrees x5 degrees field of view with 0.6 degrees x0.6 degrees beam width and background peaks suppressed 15 dB relative to the main lobe within the field of view for arbitrarily chosen beam directions. Fabrication follows the hybrid silicon process developed at UCSB with modifications to incorporate silicon diodes and a GRIN lens.

引用

页数：15

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