Abstract

A 16-element optical phased array integrated on chip is presented for achieving two-dimensional (2D) optical beam steering. The device is fabricated on the silicon-on-insulator platform with a 250 nm silicon device layer. Steering is achieved via a combination of wavelength tuning and thermo-optic phase shifting with a switching power of Pπ=20mW per channel. Using a silicon waveguide grating with a polycrystalline silicon overlay enables narrow far field beam widths while mitigating the precise etching needed for conventional shallow etch gratings. Using this system, 2D steering across a 20°×15° field of view is achieved with a sidelobe level better than 10 dB and with beam widths of 1.2°×0.5°.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Recent advances in silicon-based passive and active optical interconnects

Harish Subbaraman, Xiaochuan Xu, Amir Hosseini, Xingyu Zhang, Yang Zhang, David Kwong, and Ray T. Chen
Opt. Express 23(3) 2487-2511 (2015)

Ultralow-loss polycrystalline silicon waveguides and high uniformity 1x12 MMI fanout for 3D photonic integration

David Kwong, John Covey, Amir Hosseini, Yang Zhang, Xiaochuan Xu, and Ray T. Chen
Opt. Express 20(19) 21722-21728 (2012)

High-resolution aliasing-free optical beam steering

David N. Hutchison, Jie Sun, Jonathan K. Doylend, Ranjeet Kumar, John Heck, Woosung Kim, Christopher T. Phare, Avi Feshali, and Haisheng Rong
Optica 3(8) 887-890 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription