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
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Journal ArticleDOI
Integrated visible light phased array system for autostereoscopic image projection.
TL;DR: A chip-scale autostereoscopic image projection system that utilizes a system of multiple integrated visible light optical phased arrays to reconstruct virtual light fields to reconstruct reality with continuous parallax observable by the human visual system is demonstrated.
Journal ArticleDOI
Chip-scale blue light phased array
Min Chul Shin,Aseema Mohanty,Kyle Watson,Gaurang R. Bhatt,Christopher T. Phare,Steven A. Miller,Moshe Zadka,Brian S. Lee,Xingchen Ji,Ipshita Datta,Michal Lipson +10 more
TL;DR: This work demonstrates the first chip-scale phased array operating at blue wavelengths (488 nm) using a high-confinement silicon nitride platform and achieves wide-angle beam steering over a 50° field of view with a full width at half-maximum beam size of 0.17°.
Journal ArticleDOI
Lens-based integrated 2D beam-steering device with defocusing approach and broadband pulse operation for Lidar application.
TL;DR: An integrated two-dimensional beam-steering device based on an on-chip silicon-nitride switch/emitter structure and off-chip lens for light detection and ranging (Lidar) application at 1550 nm has O(log2N) power consumption for N emitters, allows digital control and achieves 18 dB background suppression.
Journal ArticleDOI
Silicon-Based Optical Phased Array Using Electro-Optic $p$ - $i$ - $n$ Phase Shifters
Geumbong Kang,Chan-Hyun Youn,Kyoungsik Yu,Hyo-Hoon Park,Seong Hwan Kim,Jong-Bum You,Dae-Seong Lee,Hyeonho Yoon,Yun-Gi Ha,Jong-Hun Kim,Dong-Eun Yoo,Dongwook Lee +11 more
TL;DR: In this paper, the phase shifters are constructed using a $p$ -$i$ - $n$ junction structure with the doped regions formed on both sides of the $i$ region.
Journal ArticleDOI
Design and fabrication of a SiN-Si dual-layer optical phased array chip
Pengfei Wang,Guangzhen Luo,Xu Yang,Yajie Li,Yanmei Su,Jianbin Ma,Ruiting Wang,Zhengxia Yang,Xuliang Zhou,Yejin Zhang,Jiaoqing Pan +10 more
TL;DR: In this paper, a SiN-Si dual-layer optical phased array (OPA) chip is designed and fabricated, which combines the low loss of SiN with the excellent modulation performance of Si.
References
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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°.