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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Proceedings ArticleDOI
Optical phased array based on silicon waveguides with non-uniform widths
TL;DR: In this article, a 1 × 8 optical phased array on a silicon-on-insulator platform is proposed and demonstrated for beam steering with compressed high order grating lobes.
Proceedings ArticleDOI
Si PIC Based on Photonic Crystal for LiDAR Applications
Toshihiko Baba,H. Ito,H. Abe,Takemasa Tamanuki,Yosuke Hinakura,Ryo Tetsuya,J. Maeda,Mikiya Kamata,Ryo Kurahashi,Ryo Shiratori +9 more
TL;DR: Wide-range nonmechanical beam steering is available by an array of Si photonic crystal slow-light waveguides and their switching without complicated control.
Proceedings ArticleDOI
Beam-Steering Nanophotonic Phased-Array Neural Probes
Wesley D. Sacher,Xinyu Liu,Fu-Der Chen,Homeira Moradi-Chameh,Ilan Felts Almog,Thomas Lordello,Michael Chang,Azadeh Naderian,Trevor M. Fowler,Eran Segev,Tianyuan Xue,Sara Mahallati,Taufik A. Valiante,Laurent Moreaux,Joyce K. S. Poon,Michael L. Roukes +15 more
TL;DR: This work demonstrates the first implantable nanophotonic neural probes with integrated silicon nitride phased arrays with coherent beam-steering achieved in brain tissue by wavelength tuning.
Journal ArticleDOI
Low-power consumption InP-based optical phase arrays with non-uniformly spaced output waveguides.
Su Tan,Xiangyang Dai,Jiajun Lou,Liyuan Song,Chien-Liang Liu,YE Gu,Quanan Chen,Chun Jiang,Xiaonan Yu,Qi Liu,Mingzhi Lu,Shoufeng Tong,Weihua Guo +12 more
TL;DR: In this paper , the phase shifters are based on a p-i-n structure which are operated with reverse bias and have a low power consumption, and in order to improve the performance especially to obtain larger steering angle and narrower beam divergence without increasing the number of channels, the spacing between the output waveguides is optimized.
References
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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
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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°.