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
On the performance of optical phased array technology for beam steering: effect of pixel limitations.
TL;DR: In this paper, the effects of non-ideal pixels on beam formation were discussed in a general and technology-agnostic manner, and the authors quantified beam steering quality and made recommendations on the pixel performance required for beam steering within prescribed specifications.
Journal ArticleDOI
Thermo-Optic Beam Scanner Employing Silicon Photonic Crystal Slow-Light Waveguides
TL;DR: In this paper, a photonic crystal slow-light waveguides and switch trees were fabricated by a Si photonics process, employing a bespoke prism lens for beam collimation.
Journal ArticleDOI
Experimental simulation of ranging action using Si photonic crystal modulator and optical antenna.
TL;DR: Two components of Frequency-modulated continuous-wave LiDAR based on Si photonics are fabricated and tested and the experimental simulation of the FMCWLiDAR, thus, was achieved.
Journal ArticleDOI
Solid-State Photonics-Based Lidar With Large Beam-Steering Angle by Seamlessly Merging Two Orthogonally Polarized Beams
TL;DR: In this paper, two beams diffracted from two grating couplers with the orthogonal polarization were merged together to increase the beam-steering angle and reduce the required wavelength tuning range.
Journal ArticleDOI
Doppler velocimeter and vibrometer FMCW LiDAR with Si photonic crystal beam scanner.
TL;DR: In this article, a Si photonic crystal beam scanner was used to reduce the size of conventional scanning laser Doppler vibrometers, making LiDAR a multimodal imaging sensor, which can measure the distributions of distance, velocity, and vibration frequency.
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°.