Abstract

A practical two-dimensional beam steering solid-state system based on the synthesis of one-dimensional wavelength tuning and a one-dimensional optical phased array is demonstrated and investigated. The system incorporates an integrated multiple-channel-interference widely tunable laser, an integrated 32-channel optical phased array, an offline phase error correction unit, and home-made control electronics. The introduction of the integrated tunable laser avoids the traditional bulky light source fed into the optical phased array, making the architecture promising to be miniaturized. In addition, a calibration method based on particle swarm optimization is proposed and proved to be effective to correct the phase errors existing in the arrayed channels and improve the emitted far-field quality. Other practical aspects, such as high-speed control and cost, are taken into the consideration of the system design as well. Under the control of home-made electronics, the laser exhibits a tuning range of 50 nm with a 44 dB side-mode suppression ratio, and the system presents the characteristics of low divergence (${0.63}^\circ \times {0.58}^\circ$), high side-lobe suppression ratio (${\gt}{10}\;{\rm dB}$), and high-speed response (${\lt}{10}\;\unicode{x00B5} {\rm s}$ time constant) in an aliasing-free sweeping range of ${18}^\circ \times {7}^\circ$.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Chip scale GaAs optical phased arrays for high speed beam steering

Zihao Wang, Jiali Liao, Yanling Sun, Xiang’e Han, Yang Cao, and Run Zhao
Appl. Opt. 59(27) 8310-8313 (2020)

Serpentine optical phased arrays for scalable integrated photonic lidar beam steering

Nathan Dostart, Bohan Zhang, Anatol Khilo, Michael Brand, Kenaish Al Qubaisi, Deniz Onural, Daniel Feldkhun, Kelvin H. Wagner, and Miloš A. Popović
Optica 7(6) 726-733 (2020)

SiN integrated optical phased arrays for two-dimensional beam steering at a single near-infrared wavelength

Nicola A. Tyler, Daivid Fowler, Stephane Malhouitre, Stephanie Garcia, Philippe Grosse, Wilfried Rabaud, and Bertrand Szelag
Opt. Express 27(4) 5851-5858 (2019)

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 (12)

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

Equations (9)

You do not have subscription access to this journal. Equations 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