Analog Photonics LLC

Massachusetts Institute of Technology

Sandia Corporation

The University of Texas System

Columbia University

The State University of New York

The University of Arizona

Pirelli & C. Societa Per Azioni

Michael Robert Watts

Ehsan Shah Hosseini

Christopher Vincent Poulton

Erman Timurdogan

Peter Nicholas Russo

Gregory Nolan Nielson

Diedrik Vermeulen

Jie Sun

Zhan Su

Matthew Byrd

Ami Yaacobi

Benjamin Roy Moss

Anthony L Lentine

Matteo Cherchi

Michael J Whitson

Milos A Popovic

William A Zortman

Douglas Chandler Trotter

Purnawirman Purnawirman

Sidlgata V Sreenivasan

Tymon Barwicz

Murat Okandan

Sanjay K Banerjee

Christopher Todd DeRose

Vipin P Gupta

Christina Manolatou

Akhila Mallavarapu

Eleanor L Haus, Legal Representative

Jaydeep Kulkarni

Michael Shaw

Ralph W Young

Jonathan B Bradley

Katia Shtyrkova

Douglas Duane Coolbaugh

John Dimitris Joannopoulos

Lionel Cooper Kimerling

Michal Lipson

Brad Cordova

Steven G Johnson

Franz Xaver Kaertner

Hermann A Haus

Chee Wei Wong

Paul Davids

David O Caplan

Peter Thomas Rakich

Keren Bergman

Erich P Ippen

Douglas La Tulipe

Thomas L Koch

Rohan Deodatta Kekatpure

Daniel Pascual

Alexander H Hsia

Jeremiah Hebding

Patrick Callahan

Jerry Zhou

Jonathan D B Bradley

Patrick T Callahan

Manan Raval

Oleg Shatrovoy

Jordan Goldstein

Aspects of the present disclosure describe systems, methods, and structures for aberration correction of optical phased arrays that employ a corrective optical path difference (OPD) in the near-field of an OPA to correct or cancel out aberrations in emitted beams of the OPA including those reaching far-field distances by generating a spatially-varying OPD across the aperture of the OPA that is substantially equal and opposite to an equivalent OPD of the aberration(s).

Aberration correction of optical phased arrays

Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.

Large scale steerable coherent optical switched arrays

Light is provided to optical antennas (OAs) separated by a first set of spacings in a first OPA. Phases of light provided to respective OAs are controlled to form a transmitted beam whose angle is steered so that first and second lobes of a first angular intensity distribution (AID) scan over first and second portions of a region, respectively. Light is received from OAs separated by a second set of spacings in a second OPA into which light is received from directions associated with a second AID. The first lobe of the first AID and a first lobe of the second AID substantially overlap in angle during the scan of the first lobes, and the second lobe of the first AID and a second lobe of the second AID substantially overlap in angle during the scan of the second lobes.

Managing optical phased array performance based on angular intensity distributions

Aspects of the present disclosure describe optical phased array structures and devices in which hyperbolic phase envelopes are employed to create focusing and diverging emissions in one and two dimensions. Tuning the phase fronts moves focal point spot in depth and across the array. Grating emitters are also used to emit light upward (out of plane). Adjusting the period of the gratings along the light propagation direction results in focusing the light emitted from the gratings. Changes in the operating wavelengths employed moves the focal spot along the emitters.

Phase front shaping in one and two-dimensional optical phased arrays

An apparatus includes: an optical phased array (e.g., on a photonic integrated circuit), a focusing element, which can be at a fixed position relative to the optical phased array and configured to receive an optical beam from the optical phased array, and a steering element, which can be at a fixed position relative to the focusing element and configured to transmit the optical beam received from the focusing element. In some implementations, at least one of the focusing element or the steering element is externally coupled to the photonic integrated circuit.

Optical phased array light steering

A polarization rotator structure includes: a first core structure formed at a first layer, extending from the first end to a second end, and a second core structure formed at a second layer that is at a different depth than the first layer and formed in proximity to the first core structure. The first core structure and the second core structure provide mode hybridization between at least two orthogonally polarized waveguide modes of the PRS. An optical splitter structure is optically coupled at a first end to the second end of the PRS, and optically coupled at a second end to at least two optical waveguides, and includes: a first core structure that is contiguous with at least one of the first or second core structures of the PRS, and a second core structure that is separate from both of the first and second core structures of the PRS.

Integrated polarization rotation and splitting using mode hybridization between multiple core structures

At least one beam of an optical wave is transmitted along a transmission angle toward a target location from a send aperture of a transmitter. The optical wave comprises at least a first portion, and a second portion having a different characteristic from a characteristic of the first portion. Two or more receivers include at least one receiver comprising: a receive aperture arranged in proximity to at least one of the send aperture or a receive aperture of a different receiver, an optical phased array within the receive aperture, the optical phased array being configured to receive at least a portion of a collected optical wave arriving at the receive aperture along a respective collection angle, and a filter configured to filter the received portion of the collected optical wave according to the characteristic of the first portion of the optical wave.

Multi-static coherent LiDAR

An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.

Optical phase shifter device

An apparatus comprises: a photonic integrated circuit comprising an optical phased array, a first focusing element at a fixed position relative to the optical phased array and configured to couple an optical beam to or from the optical phased array, and a second focusing element at a fixed position relative to the first focusing element and configured to couple the optical beam to or from the first focusing element. At least one of the first or second focusing element is externally coupled to the photonic integrated circuit, and the first and second focusing elements have different effective focal lengths.

Optical phased array light shaping

Aspects of the present disclosure describe wavelength division multiplexed LiDAR systems, methods, and structures that advantageously provide a wide field of view without employing lasers having a large tuning range.

Wavelength division multiplexed LiDAR

An apparatus comprises: a first integrated circuit comprising: a plurality of sets of optical waveguides, each set of optical waveguides including a plurality of optical waveguide segments, and a plurality of optical emitter elements arranged over a first surface of the first integrated circuit, each optical emitter element coupled to a distal end of one of the optical waveguide segments; and a second integrated circuit comprising: a plurality of optical phase shifters that each provide a phase-shifted optical wave that is coupled to the first integrated circuit from a first edge surface of the second integrated circuit. The first edge surface of the second integrated circuit is in proximity to a row of proximal ends of the optical waveguide segments of a first set of the plurality of sets of optical waveguides.

Two dimensional optical phased arrays using edge-coupled integrated circuits

A method for fabricating a three-dimensional (3D) static random-access memory (SRAM) architecture using catalyst influenced chemical etching (CICE). Utilizing CICE, semiconductor fins can be etched with no etch taper, smooth sidewalls and no maximum height limitation. CICE enables stacking of as many nanosheet layers a desired and also enables a 3D stacked architecture for SRAM cells. Furthermore, CICE can be used to etch silicon waveguides thereby creating waveguides with smooth sidewalls to improve transmission efficiency and, for photon-based quantum circuits, to eliminate charge fluctuations that may affect photon indistinguishability.

Catalyst influenced chemical etching for fabricating three-dimensional SRAM architectures

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Hingham, MA, United States of America

Michael Robert Watts