End-Fire Silicon Waveguides as a Platform for Optical Phased Arrays

Lasers;phased arrays;Electrical Engineering

Kossey, Michael RFoster, Amy C. ;

Johns Hopkins University

关键词: Lasers;    phased arrays;    Electrical Engineering;   

Others  :  https://jscholarship.library.jhu.edu/bitstream/handle/1774.2/59166/KOSSEY-DISSERTATION-2018.pdf?sequence=1&isAllowed=y

瑞士|英语

来源: JOHNS HOPKINS DSpace Repository

【 摘 要 】

The ability to quickly and accurately steer a laser beam is key to many applications. Speed requirements in many cases have exceeded the capabilities of conventional mechanical approaches, which has led to the introduction of nonmechanical beam steering in the form of optical phased arrays (OPAs). However, current OPAs are incapable of λ/ 2 element spacing, a key property of phased arrays, which severely impacts their steering and power capabilities. In this dissertation we introduce the concept of an end-firing silicon OPA capable of achieving half-lambda element spacing. We fabricate one-dimensional array prototypes of this class of device, and demonstrate their beam forming and steering capabilities. We also demonstrate the technology necessary to extend the concept to a two-dimensional array.