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,Haisheng Rong +8 more
- Vol. 3, Iss: 8, pp 887-890
TLDR
In this paper, a two-axis steerable optical phased array with over 500 resolvable spots and 80° steering in the phased array axis (measurement limited) and a record small divergence in both axes (0.14°).Abstract:
Many applications, including laser (LIDAR) mapping, free-space optical communications, and spatially resolved optical sensors, demand compact, robust solutions to steering an optical beam. Fine target addressability (high steering resolution) in these systems requires simultaneously achieving a wide steering angle and a small beam divergence, but this is difficult due to the fundamental trade-offs between resolution and steering range. So far, to our knowledge, chip-based two-axis optical phased arrays have achieved a resolution of no more than 23 resolvable spots in the phased-array axis. Here we report, using non-uniform emitter spacing on a large-scale emitter array, a dramatically higher-performance two-axis steerable optical phased array fabricated in a 300 mm CMOS facility with over 500 resolvable spots and 80° steering in the phased-array axis (measurement limited) and a record small divergence in both axes (0.14°). Including the demonstrated steering range in the other (wavelength-controlled) axis, this amounts to two-dimensional beam steering to more than 60,000 resolvable points.read more
Citations
More filters
Journal ArticleDOI
Blind zone-suppressed hybrid beam steering for solid-state Lidar
TL;DR: In this article, a blind zone-suppressed and flash-emitting solid-state Lidar based on lens-assisted beam-steering technology was demonstrated, with the design of a subwavelength gap 1D long-emitter array and multiwavelength flash beam emitting.
Patent
High-speed light sensing apparatus
Yun-Chung Na,Che-Fu Liang +1 more
TL;DR: In this paper, a photodiode region is configured to absorb photons and to generate photo-carriers from the absorbed photons, where the second control signal is different from the first control signal.
Journal ArticleDOI
Large-Scale Integrated Multi-Lines Optical Phased Array Chip
Lanxuan Zhang,Yingzhi Li,Min Tao,Yu-Bing Wang,Yu Hou,Bo-Song Chen,Yuxuan Li,Li Qin,Fengli Gao,Xianshu Luo,Guo-Qiang Lo,Junfeng Song +11 more
TL;DR: In this article, the authors designed and integrated four optical phased arrays (OPAs) in a single chip and used optical switches to select one or more OPAs for beam scanning.
Journal ArticleDOI
Low-power optical beam steering by microelectromechanical waveguide gratings
TL;DR: In this article, a microelectromechanical (MEMS) actuation of a suspended silicon photonic waveguide grating grating was used for beam steering, achieving up to 56° beam steering with 20V actuation and power consumption below the μW level.
Journal ArticleDOI
Omnidirectional beam steering using aperiodic optical phased array with high error margin.
Dong-Wei Zhuang,Lanxuan Zhagn,Xiao-Chuan Han,Yuxuan Li,Yingzhi Li,Xiaobin Liu,Fengli Gao,Junfeng Song +7 more
TL;DR: A pattern-search-like algorithm is proposed to design an aperiodic optical phased array for extensive applications in light detection and ranging and free-space communication that has the widest steering range, narrowest divergence, and largest mean pitch for the same waveguide number.
References
More filters
Journal ArticleDOI
Large-scale nanophotonic phased array
TL;DR: This work demonstrates that a robust design, together with state-of-the-art complementary metal-oxide–semiconductor technology, allows large-scale NPAs to be implemented on compact and inexpensive nanophotonic chips and therefore extends the functionalities of phased arrays beyond conventional beam focusing and steering, opening up possibilities for large- scale deployment.
Journal ArticleDOI
A MEMS-based projection display
TL;DR: The digital display engine (DDE) as discussed by the authors is based on a single DMD device having array dimensions of 800/spl times/600 elements, illuminated by a metal halide arc lamp through a compact optics train.
Journal ArticleDOI
Two-dimensional free-space beam steering with an optical phased array on silicon-on-insulator
Jonathan K. Doylend,Martijn J. R. Heck,Jock Bovington,Jonathan D. Peters,Larry A. Coldren,John E. Bowers +5 more
TL;DR: A 16-channel, independently tuned waveguide surface grating optical phased array in silicon for two dimensional beam steering with a total field of view of 20° x 14° and full-window background peak suppression of 10 dB is demonstrated.
Journal ArticleDOI
Off-chip beam steering with a one-dimensional optical phased array on silicon-on-insulator
TL;DR: An integrated approach is followed in which a 1D optical phased array is fabricated on silicon-on-insulator in which continuous thermo-optical steering of 2.3 degrees and wavelength steering of 14.1 degrees is reported.
Journal ArticleDOI
Fully integrated hybrid silicon two dimensional beam scanner.
Jared Hulme,Jonathan K. Doylend,Martijn J. R. Heck,Jon D. Peters,Michael L. Davenport,Jock Bovington,Larry A. Coldren,John E. Bowers +7 more
TL;DR: The photonic integrated circuit (PIC) consists of 164 optical components including lasers, amplifiers, photodiodes, phase tuners, grating couplers, splitters, and a photonic crystal lens and exhibited steering over 23° x 3.6°.