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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High-Resolution Frequency-Modulated Continuous-Wave LiDAR Using Multiple Laser Sources Simultaneously Scanning
TL;DR: In this article , a high-resolution frequency-modulated continuous-wave (FMCW) ranging system using multi-source stitching was proposed, which can effectively solve the contradiction between detection depth and scanning bandwidth.
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Silicon Photonic Phase Shifters and Their Applications: A Review
TL;DR: In this paper, a review of different types of silicon photonic phase shifters, including microelectro-mechanical systems (MEMS), thermo-optics, and free-carrier depletion types, highlighting the MEMS-based ones, is presented.
High Resolution Grating Antennas for Beam Steering on the IMOS Platform
Yi Wang,Yuqing Jiao,Jorn P. van Engelen,Sander Reniers,Manuel B. J. van Rijn,Xuebing Zhang,Zizheng Cao,V. Dolores-Calzadilla,Kevin A. Williams,MK Meint Smit +9 more
TL;DR: In this article, a SiO 2 gratings on the InP membrane on silicon (IMOS) platform is used to form ultra-weak grating-based antennas for generation of ultra-narrow free-space optical beams.
Proceedings ArticleDOI
Light recycling beam steering on a DMD lidar
TL;DR: In this paper, a new method for binary and spatial phase modulation using Digital Micromirror Device (DMD) was proposed by a research group in Germany, where complemental self-images of DMD were formed by two auxiliary optics while adding a pi phase shift between two images.
Journal ArticleDOI
Modulator chip based on semiconductor heterostructures with a surface diffraction grating for laser beam steering.
V. V. Zolotarev,Sergey O. Slipchenko,I. S. Shashkin,A. E. Kazakova,V. A. Kriuchkov,Nikita A. Pikhtin +5 more
TL;DR: In this article, the design parameter optimization of a chip based on a heterostructure with a surface diffraction grating for laser beam angle modulation was carried out and it was found that the widest field of view is achieved at outcoupling angles close to the total internal reflection.
References
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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°.