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Title: Optical phased arrays with evanescently-coupled antennas

Patent ·
OSTI ID:1174183

An optical phased array formed of a large number of nanophotonic antenna elements can be used to project complex images into the far field. These nanophotonic phased arrays, including the nanophotonic antenna elements and waveguides, can be formed on a single chip of silicon using complementary metal-oxide-semiconductor (CMOS) processes. Directional couplers evanescently couple light from the waveguides to the nanophotonic antenna elements, which emit the light as beams with phases and amplitudes selected so that the emitted beams interfere in the far field to produce the desired pattern. In some cases, each antenna in the phased array may be optically coupled to a corresponding variable delay line, such as a thermo-optically tuned waveguide or a liquid-filled cell, which can be used to vary the phase of the antenna's output (and the resulting far-field interference pattern).

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Number(s):
8,988,754
Application Number:
14/149,099
OSTI ID:
1174183
Resource Relation:
Patent File Date: 2014 Jan 07
Country of Publication:
United States
Language:
English

References (63)

Astronomy in South Africa: The long shot journal December 2011
Optical phased array technology journal February 1996
Optical Beam Steering Using a Multichannel Lithium Tantalate Crystal journal January 1972
High-efficiency liquid-crystal optical phased-array beam steering journal January 1996
The first demonstration of an optically steered microwave phased array antenna using true-time-delay journal January 1991
1 × 12 Unequally spaced waveguide array for actively tuned optical phased array on a silicon nanomembrane journal August 2011
Electronic beam steering in monolithic grating‐surface‐emitting diode laser arrays journal December 1988
Two-dimensional free-space beam steering with an optical phased array on silicon-on-insulator journal January 2011
Free-space Beam Steering in Two Dimensions Using a Silicon Optical Phased Array conference January 2012
Integrated Optical Beam Steerers conference January 2013
Two-dimensional optical phased array antenna on silicon-on-Insulator journal January 2010
Off-chip beam steering with a one-dimensional optical phased array on silicon-on-insulator journal January 2009
Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction journal September 2011
Vertical emitting aperture nanoantennas journal January 2012
Suppression of sidelobes in the far‐field radiation patterns of optical waveguide arrays journal October 1988
Nanometre-scale germanium photodetector enhanced by a near-infrared dipole antenna journal March 2008
High-Speed Beam Steering With Phased Vertical Cavity Laser Arrays journal July 2013
Photonic true-time delay unit for broadband adaptive nulling in antenna arrays journal November 2009
Large-scale nanophotonic phased array journal January 2013
Polymer-based optical waveguide circuits for photonic phased-array antennas conference April 1999
Resonant Optical Antennas journal June 2005
Improving the Mismatch between Light and Nanoscale Objects with Gold Bowtie Nanoantennas journal January 2005
Directional control of light by a nano-optical Yagi–Uda antenna journal March 2010
Tuning the scattering response of optical nanoantennas with nanocircuit loads journal April 2008
High efficiency Silicon-on-Insulator grating coupler based on a poly-Silicon overlay journal January 2006
Reconstruction of an object from the modulus of its Fourier transform journal January 1978
Exploring light propagating in photonic crystals with Fourier optics journal January 2007
Light’s Orbital Angular Momentum journal May 2004
Supermodes for optical transmission journal January 2011
Low Power and Broadband 2 X 2 Silicon Thermo-Optic Switch conference January 2011
Electronically controlled optical beam-steering by an active phased array of metallic nanoantennas journal January 2013
Two-Dimensional Optical Beam Steering With InP-Based Photonic Integrated Circuits journal July 2013
InP Photonic Integrated Circuit with On-chip Tunable Laser Source for 2D Optical Beam Steering conference January 2013
Silicon Photonics in High Performance Computing conference January 2010
Integrated optic switch patent July 1988
Directional coupler type optical device and a driving method therefor patent October 1993
Multi-functional photometer with movable linkage for routing optical fibers patent July 1996
Low insertion loss optical switches in display architecture patent March 1999
Method and apparatus for optical beam steering patent August 1999
Optical device utilizing optical waveguides and mechanical light-switches patent September 1999
Spatial switch using an optical beam steering device patent October 1999
Electro-optical phased array beam modulator patent October 2000
Asymmetric thermo-optical switch patent June 2001
Structural deformation compensation system for large phased-array antennas patent December 2001
High reliability fiber coupled optical switch patent April 2002
Apparatus and method for directing optical signals using a movable optical switching element patent June 2002
Optical switching system patent December 2002
Apparatus and method for directing optical signals using a movable optical switching element patent November 2003
Optical switch manufacturing method thereof patent January 2005
Broadband optical beam steering system and device patent September 2005
Optical switch with 3D waveguides patent January 2006
Reconfigurable optical add drop multiplexers with integrated power equalization patent May 2006
Method and system for controlling an optical switch using dynamic compensation patent July 2007
Light control device and light control system using same patent July 2009
Optical focal plane data coupler patent February 2010
Substrates, systems and methods for analyzing materials patent November 2011
Two-dimensional surface normal slow-light photonic crystal waveguide optical phased array patent June 2012
Optical signal processing device patent January 2013
System and method for using planar device to generate and steer light beam patent June 2013
Waveguide substrates and optical systems and methods of use thereof patent June 2013
Micro-size optical switch on silicon-on-insulator platform patent July 2013
Optical Focal Plane Data Coupler patent-application March 2009
Optical Phased Arrays patent-application October 2113

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