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
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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
Single-Pixel Imaging Using Carrier-Depletion Optical Phased Array With Reduced Phase Shift Requirement
Samar Emara,Taichiro Fukui,Kento Komatsu,Yusuke Kohno,Rui Tang,Takuo Tanemura,Yoshiaki Nakano +6 more
TL;DR: In this article, the phase shift requirement of OPA for single-pixel imaging was investigated and demonstrated, for the first time, that full 2π phase shifts are not mandatory to generate a set of illumination patterns with a sufficient degree of randomness required to reconstruct the image.
Journal ArticleDOI
An improved aperiodic OPA design based on large antenna spacing
TL;DR: In this article, an improved aperiodic OPA design by proper antenna arrangement to increase the side mode suppression ratio (SMSR) was proposed, where the antenna spacing is larger than 10 λ and smaller than 15 λ.
Journal ArticleDOI
High-Speed and Low-Power Silicon Optical Phased Array Based on the Carrier-Depletion Mechanism
Zhaoyang Zhang,Hui Yu,Qikai Huang,Zhiyan Zhou,Bei Chen,Tingge Dai,Huiye Qiu,Yuehai Wang,Jian Yang +8 more
TL;DR: In this article , a carrier-depletion-based phase shifter-based optical phased array (PA-OPA) was proposed for high-speed and power-efficient solid-state Lidars.
Journal ArticleDOI
Angle Sensor Module for Vehicle Steering Device Based on Multi-Track Impulse Ring
TL;DR: This paper proposes a multi-track encoder-based vehicle steering system, which is incorporated with a TAS module structure that minimizes the number of components and the angle detection error of the module compared with existing TAS modules.
Journal ArticleDOI
Conjugated MEMS Phased Arrays for Large Field of View Random Access Scanning
TL;DR: In this paper, a random access beam steering at 250 kHz using a MEMS phased array and a switchable grating modulator was demonstrated, achieving 4,352 resolvable lines from 2,176 line pairs over a field of view (FOV) of ± 3.74° in the Fourier plane.
References
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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.
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A MEMS-based projection display
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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°.