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
Reads0
Chats0
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
Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source
Masayuki Okano,Changho Chong +1 more
TL;DR: In this article, a swept source Lidar system is proposed to perform frequency-modulated continuous-wave (FMCW) ranging and non-mechanical beam steering simultaneously.
Journal ArticleDOI
Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array
TL;DR: In this paper, a subwavelength-pitch silicon waveguide array with low crosstalk is proposed and analyzed, where periodic silicon nano-blocks symmetrically arranged along the silicon strip waveguides are properly designed to work in the resonant region as a high-reflection boundary.
Journal ArticleDOI
On‐Chip Metamaterial Antenna Array with Distributed Bragg Deflector for Generation of Collimated Steerable Beams
Pablo Ginel-Moreno,Abdelfettah Hadij-ElHouati,Alejandro Sánchez-Postigo,J. Gonzalo Wangüemert-Pérez,Íñigo Molina-Fernández,Jens H. Schmid,Pavel Cheben,Alejandro Ortega-Moñux +7 more
TL;DR: In this article , an apodized Bragg deflector working as a low-loss (<0.3 dB) ultra-compact beam expander was used to generate a 40µm wide on-chip Gaussian beam that illuminates a one-dimensional array of 112 optical antennas with a length of 1.5 mm.
Proceedings ArticleDOI
Single-Chip Beam Scanner with Integrated Light Source for Real-Time Light Detection and Ranging
Ji San Lee,Dong-Jae Shin,Bongyong Jang,Hyunil Byun,Chang-Bum Lee,Changgyun Shin,In-Oh Hwang,Dongshik Shim,Eun-Kyung Lee,Jinmyung Kim,Kyunghyun Son,Tatsuhiro Otsuka,Kyoung-ho Ha,Hyuck Choo +13 more
TL;DR: In this article, a single-chip solution for a solid-state 2D beam scanner achieving 10m light detection and ranging (LIDAR) operation at 20 frames per second (fps) is presented.
Proceedings ArticleDOI
Hybrid Imaging-Based Beam Steering System using a Sparse Photonic Integrated Circuit Outcoupling Array
TL;DR: In this article, a sparse photonic integrated circuit outcoupling (PICO) array was introduced for fast steering mirrors in a hybrid imaging-based beam steering (IBBS) system for free-space optical communications and LIDAR applications.
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°.