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
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Journal ArticleDOI
Investigation and demonstration of a high-power handling and large-range steering optical phased array chip.
Lanxuan Zhang,Yingzhi Li,Yu Hou,Yu-Bing Wang,Min Tao,Bo-Song Chen,Quanxin Na,Yuxuan Li,Zihao Zhi,Xiaobin Liu,Xueyan Li,Fengli Gao,Xianshu Luo,Guo-Qiang Lo,Junfeng Song +14 more
TL;DR: In this paper, a 64-channel SiN-Si based one-dimensional (1D) OPA chip has been designed to handle high beam power to achieve large scanning range.
Journal ArticleDOI
Large-Scale and Broadband Silicon Nitride Optical Phased Arrays
TL;DR: In this article , a large-scale SiNx nanophotonic phased array with an optical aperture of 2.3 mm and a wide steering range of 53.7° was presented.
Journal ArticleDOI
Improved performance of optical phased arrays assisted by transparent graphene nanoheaters and air trenches
TL;DR: In this article, high-performance optical phased arrays (OPAs) assisted by transparent graphene nanoheaters and air trenches have been designed and simulated, achieving a record-high operation speed on the order of 200 kHz.
Journal ArticleDOI
Millimeter-long metamaterial surface-emitting antenna in the silicon photonics platform.
Pablo Ginel-Moreno,Alejandro Sánchez-Postigo,Jose De-Oliva-Rubio,Abdelfettah Hadij-ElHouati,Winnie N. Ye,J. Gonzalo Wangüemert-Pérez,Íñigo Molina-Fernández,Jens H. Schmid,Pavel Cheben,Alejandro Ortega-Moñux +9 more
TL;DR: In this article, a 2-millimeter-long, single-etched subwavelength-engineered optical antenna with a lateral periodic array of radiative elements is presented.
Journal ArticleDOI
Design of an ultra-compact low-crosstalk sinusoidal silicon waveguide array for optical phased array.
TL;DR: The design provides an effective method to build the emitter for an energy-efficient optical phased array with a large field of view and exhibits a favorable fabrication error tolerance when taking into account the waveguide width variations in practice.
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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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°.