Aeva, Inc.

Rockley Photonics Limited

Intel Corporation

Pradeep Srinivasan

Amit Singh Nagra

Hooman Abediasl

Kevin Kinichi Masuda

Aaron John Zilkie

Guomin Yu

Haydn Frederick Jones

Damiana Lerose

Zhizhong Tang

Bing Shen

Brett E Huff

Brian J Roxworthy

Andrew George Rickman

Mazin Alalusi

Wenjing Liang

Andrea Trita

Thomas Pierre Schrans

Mina A Rezk

Ashwin K Samarao

Srikanth Kuthuru

Ehsan Hamidi

Yun-Chung Na

Ansheng Liu

Kumar Bhargav Viswanatha

Behsan Behzadi

David Arlo Nelson

Jeffrey B Driscoll

Dong Yoon Oh

Aaron L Birkbeck

Ryan Wayne Going

Kevin Masuda

Haisheng Rong

Joyce Kai See Poon

Harel Frish

Nicholas Kucharewski

Zheng Yong

Assia Barkai

Mahesh Krishnamurthi

Judson D Ryckman

I-Wei Andy Hsieh

George A Ghiurcan

Ofir Gan

Michael A Creighton

Carsten Brandt

Isako Hoshino

A polarization splitter-rotator (PSR) is described. The PSR having a silicon nitride based waveguide including a first silicon nitride segment comprising a tapered width in a longitudinal direction and a ridge extending in a transverse direction and an adiabatic coupler coupled with the first silicon nitride segment.

Polarization splitter-rotator having silicon based waveguide with silicon nitride segment

A multi-channel laser source, including: a bus waveguide coupled, at an output end of the bus waveguide, to an output of the multi-channel laser source; a first semiconductor optical amplifier; a first back mirror; a first wavelength-dependent coupler, having a first resonant wavelength, on the bus waveguide; a second semiconductor optical amplifier; a second back mirror; and a second wavelength-dependent coupler, on the bus waveguide, having a second resonant wavelength, different from the first resonant wavelength. In some embodiments the first semiconductor optical amplifier is coupled to the bus waveguide by the first wavelength-dependent coupler, which is nearer to the output end of the bus waveguide than the second wavelength-dependent coupler, the second semiconductor optical amplifier is coupled to the bus waveguide by the second wavelength-dependent coupler, and the first wavelength-dependent coupler is configured to transmit light, at the second resonant wavelength, along the bus waveguide.

Broadband arbitrary wavelength multichannel laser source

A light detection and ranging apparatus (LIDAR) includes at least one waveguide including a first cladding layer having a first refractive index and a second cladding layer having multiple second refractive indexes to expand an optical mode of an optical beam propagating within the waveguide. The second refractive indexes include a gradient of refractive indexes and the first refractive index is less than the second refractive indexes.

Techniques for increasing efficiency of a waveguide of a LIDAR system

A method of singulating a die of a wafer includes etching a trench on a first surface of a wafer comprising a die and performing a cut on a second surface of the wafer, wherein the cut overlaps with the trench on the first surface of the wafer to separate the die from the wafer.

Techniques for singulating photonics die with optical quality edge

Embodiments of the present disclosure include method for sequentially mounting multiple semiconductor devices onto a substrate having a composite metal structure on both the semiconductor devices and the substrate for improved process tolerance and reduced device distances without thermal interference. The mounting process causes 'selective' intermixing between the metal layers on the devices and the substrate and increases the melting point of the resulting alloy materials.

System and apparatus for sequential transient liquid phase bonding

The LiDAR system includes a coherent receiver disposed in a reference path. The coherent receiver includes a 90° optical hybrid to receive a portion of an optical beam along the reference path and a local oscillator (LO) signal to generate multiple output signals. The coherent receiver includes a first photodetector to receive a first and a second output signal to generate a first mixed signal, and a second photodetector to receive a third and a fourth output signal to generate a second mixed signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal. A negative image of a reference beat frequency signal produced by the optical beam and the LO signal is suppressed to estimate a phase noise of the optical source to determine at least one of range or velocity information of the target.

Techniques for using a coherent receiver in a FMCW LiDAR system

A polarization splitter-rotator (PSR) is described. The PSR having a silicon nitride based waveguide to split and rotate an optical beam. The silicon nitride based waveguide having a first silicon nitride segment including a first layer and a second layer coupled with the first layer.

An interferometer comprises a plurality of waveguide branches comprising a plurality of bus waveguides and a plurality of photonic resonators. A first waveguide branch of the plurality of waveguide branches comprises a first photonic resonator coupled to a first bus waveguide. The first photonic resonator is disposed to couple and circle a first portion of an optical beam at the first photonic resonator to generate a first phase shift of the first portion of the optical beam, where the first phase shift is the same as a second phase shift of a second photonic resonator coupled to a second bus waveguide. The interferometer forms at least a portion of an in-phase and quadrature (IQ) modulator.

Photonic resonator based phase shifting

A system including one or more waveguides to receive a first returned reflection having a first lag angle and generate a first waveguide signal, receive a second returned reflection having a second lag angle different from the first lag angle, and generate a second waveguide signal. The system includes one or more photodetectors to generate a first output signal within a first frequency range, and generate, based on the second waveguide signal and a second LO signal, a second output signal within a second frequency range. The system includes an optical frequency shifter (OFS) to shift a frequency of the second LO signal to cause the second output signal to shift from within the second frequency range to within the first frequency range to generate a shifted signal. The system includes a processor to receive the shifted signal to produce one or more points in a point set.

Techniques for enhanced detection of distant objects

An optical sub-assembly includes a diode submount structure, a diode mounted to the diode submount, and a thermoelectric cooler (TEC). The TEC is in thermal contact with the diode, and the diode is positioned between the diode submount structure and the TEC.

Techniques for device cooling in an optical sub-assembly

A method of testing a photonics die at the wafer level includes providing a sacrificial waveguide and a grating coupler at least partially in a scribe line between dies of a wafer, performing one or more tests on the dies of the wafer via the sacrificial waveguide and grating coupler in the scribe line, and removing the sacrificial waveguide during separation of the dies of the wafer.

Techniques for wafer level die testing using sacrificial structures

A light detection and ranging (LIDAR) system and apparatus including a photonics chip mounted to a substrate, the photonics chip including one or more optical components and one or more electrical components and one or more integrated circuit (IC) chips mounted to the photonics chip to process an electrical signal generated by the one or more optical components and the one or more electrical components, wherein the one or more IC chips are physically separated from the substrate to reduce crosstalk on the LIDAR apparatus.

Techniques for compact LIDAR system

The LiDAR system includes a coherent receiver disposed in a reference path. The coherent receiver includes a 90&#xb0; optical hybrid to receive a portion of an optical beam along the reference path and a local oscillator (LO) signal to generate multiple output signals. The coherent receiver includes a first photodetector to receive a first and a second output signal to generate a first mixed signal, and a second photodetector to receive a third and a fourth output signal to generate a second mixed signal. The LiDAR system further includes a processor to combine the first mixed signal and the second mixed signal to generate a combined reference signal to suppress a negative image of a reference beat frequency signal to estimate a phase noise of the optical source to determine range and velocity information of the target.

Techniques for improving SNR in a FMCW LiDAR system using a coherent receiver

A Distributed Feedback Laser (DFB) mounted on a Silicon Photonic Integrated Circuit (Si PIC), the DFB having a longitudinal length which extends from a first end of the DFB laser to a second end of the DFB laser, the DFB laser comprising: an epi stack, the epi stack comprising: one or more active material layers; a layer comprising a partial grating, the partial grating extending from the second end of the DFB laser, only partially along the longitudinal length of the DFB laser such that it does not extend to the first end of the DFB laser; a highly reflective medium located at the first end of the DFB laser; and a back facet located at the second end of the DFB laser.

Distributed feedback laser

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Fremont, CA, United States of America

Pradeep Srinivasan