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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Bulk-Si Platform: Born for DRAM, Upgraded With On-Chip Lasers, and Transplanted to LiDAR
Dongjae Shin,Hyunil Byun,Dongshik Shim,Jungho Cha,Yong-Whan Shin,Changg Yun Shin,Chang Bum Lee,Eun-Kyung Lee,Bongyong Jang,Jisan Lee,Inoh Hwang,Kyung Hyun Son,Yongchul Cho,Tatsuhiro Otsuka,Hyuck Choo,Kyoung-ho Ha +15 more
TL;DR: In this paper , the authors presented the bulk-silicon photonics platform for DRAM integration, upgraded with III/V-on-bulk-Si lasers, and transplanted to LiDAR applications requiring the virtuous cycle of cost and volume.
Journal ArticleDOI
Demonstration of 2D beam steering using large-scale passive optical phased array enabled by multimode waveguides with reduced phase error
TL;DR: In this article , the authors fabricated an OPA comprising Bragg grating and arrayed waveguide grating (AWG), which realized wide and high-resolution two-dimensional beam steering only by sweeping wavelength.
FMCW Lidar: Scaling to the Chip-Level and Improving Phase-Noise-Limited Performance
TL;DR: This dissertation presents work in chip-scale integration of optical and electronic components for application in coherent lidar techniques, and summarizes a new post-processing method for FMCW lidar signals, called "multi-synchronous re-sampling" (MK-re-Sampling).
Journal ArticleDOI
Linear 2D Beam Steering With a Large Focusing Grating via Focal Point Movement and Wavelength
TL;DR: In this article, a 2D beam-steering device in SiN based on a large focusing grating was demonstrated, achieving a steering range of $3.2^\circ \times 46^ \circ $, with discrete steps in azimuth.
Journal ArticleDOI
Metasurface empowered aliasing-free optical phase array in Lithium Niobate waveguides platform
TL;DR: In this article , a metasurface empowered port-selected OPA (POPA) is proposed to steer laser beams for free-space communications, holography, and light detection and ranging.
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°.