公开(公告)号：US10782479B2

公开(公告)日：2020-09-22

申请号：US15945370

申请日：2018-04-04

Applicant: Luxtera, Inc.

Inventor： Roman Bruck ,  Attila Mekis

IPC: H04J14/02 ,  G02B6/293 ,  H04B10/2581 ,  H04J14/00 ,  G02B6/34 ,  G02B6/14 ,  H04B10/80 ,  G02B6/27 ,  G02B6/12

Abstract: Methods and systems for mode converters for grating couplers may include a photonic chip comprising a waveguide, a grating coupler, and a mode converter, with the waveguide being coupled to the grating coupler via the mode converter. The mode converter may include waveguide material and tapers defined by tapered regions, where the tapered regions do not have waveguide material. The photonic chip may receive an optical signal in the mode converter from the waveguide, where the received optical signal has a light profile that may be spatially deflected in the mode converter to configure a desired profile in the grating coupler. A long axis of the tapers may be parallel to a direction of travel of the optical signal. The long axis of the tapers may point towards the input waveguide of the grating couplers, which may be linear.

公开(公告)号：US20200057211A1

公开(公告)日：2020-02-20

申请号：US16594498

申请日：2019-10-07

Applicant: Luxtera, Inc.

Inventor： Roman Bruck ,  Attila Mekis

IPC: G02B6/42 ,  H04B10/66 ,  H04B10/70 ,  H04B10/25 ,  G02B6/43 ,  G02B6/30 ,  G02B6/136 ,  G02B6/125 ,  G02B6/124 ,  G02B6/122 ,  G02B6/12

Abstract: Methods and systems for two-dimensional mode-matching grating couplers may include in a photonic chip comprising a grating coupler at a surface of the photonic chip, where the grating coupler has increased scattering strength in a direction of a light wave traveling through the grating coupler: receiving an optical signal from a first direction within the photonic chip; and scattering the optical signal out of the surface of the photonic chip. A second optical signal may be received in the grating coupler from a second direction within the photonic chip. The second optical signal may be scattered out of the surface of the photonic chip. The increasing scattering strength may be caused by increased width scatterers along a direction perpendicular to the direction of light travel. The increased scattering strength may be caused by a transition of shapes of scatterers in the grating coupler.

公开(公告)号：US20190165200A1

公开(公告)日：2019-05-30

申请号：US16184169

申请日：2018-11-08

Applicant: Luxtera, Inc.

Inventor： Gianlorenzo Masini ,  Kam-Yan Hon ,  Subal Sahni ,  Attila Mekis

IPC: H01L31/107 ,  H01L31/0232 ,  H01L31/02

Abstract: Systems and methods for a focused field avalanche photodiode (APD) may include an absorbing layer, an anode, a cathode, an N-doped layer, a P-doped layer, and a multiplication region between the N-doped layer and the P-doped layer. Oxide interfaces are located at top and bottom surfaces of the anode, cathode, N-doped layer, P-doped layer, and multiplication region. The APD may absorb an optical signal in the absorbing layer to generate carriers, and direct them to a center of the cathode using doping profiles in the N-doped layer and the P-doped layer that vary in a direction perpendicular to the top and bottom surfaces. The doping profiles in the N-doped layer and the P-doped layer may have a peak concentration midway between the oxide interfaces, or the N-doped layer may have a peak concentration midway between the oxide interfaces while the P-doped layer may have a minimum concentration there.

公开(公告)号：US20190074907A1

公开(公告)日：2019-03-07

申请号：US16036447

申请日：2018-07-16

Applicant: Luxtera, Inc.

Inventor： Subal Sahni ,  Kam-Yan Hon ,  Attila Mekis ,  Gianlorenzo Masini ,  Lieven Verslegers

IPC: H04B10/548 ,  G02F1/025

CPC classification number: H04B10/548 ,  G02F1/025

Abstract: Methods and systems for a silicon-based optical phase modulator with high modal overlap are disclosed and may include, in an optical modulator having a rib waveguide in which a cross-shaped depletion region separates four alternately doped sections: receiving an optical signal at one end of the optical modulator, modulating the received optical signal by applying a modulating voltage, and communicating a modulated optical signal out of an opposite end of the modulator. The modulator may be in a silicon photonically-enabled integrated circuit which may be in a complementary-metal oxide semiconductor (CMOS) die. An optical mode may be centered on the cross-shaped depletion region. The four alternately doped sections may include: a shallow depth p-region, a shallow depth n-region, a deep p-region, and a deep n-region. The shallow depth p-region may be electrically coupled to the deep p-region periodically along the length of the modulator.

公开(公告)号：US20180292609A1

公开(公告)日：2018-10-11

申请号：US15950897

申请日：2018-04-11

Applicant: Luxtera, Inc.

Inventor： Lieven Verslegers ,  Attila Mekis

IPC: G02B6/26 ,  G02B6/34 ,  G02B6/42 ,  G02B5/18 ,  G02B6/30 ,  G02B6/124 ,  G02B6/12

CPC classification number: G02B6/26 ,  G02B5/1861 ,  G02B6/124 ,  G02B6/126 ,  G02B6/30 ,  G02B6/34 ,  G02B6/4214 ,  G02B2006/12107 ,  G02B2006/12147 ,  G02B2006/1215

Abstract: Methods and systems for grating couplers incorporating perturbed waveguides are disclosed and may include in a semiconductor photonics die, communicating optical signals into and/or out of the die utilizing a grating coupler on the die, where the grating coupler comprises perturbed waveguides. The perturbed waveguides may include rows of continuous waveguides with scatterers extending throughout a length of said perturbed waveguides a variable width along their length. The grating coupler may comprise a single polarization grating coupler comprising perturbed waveguides and a non-perturbed grating. The grating coupler may comprise a polarization splitting grating coupler (PSGC) that includes two sets of perturbed waveguides at a non-zero angle, or a plurality of non-linear rows of discrete shapes. The PSGC may comprise discrete scatterers at an intersection of the sets of perturbed waveguides. The grating coupler may comprise individual scatterers between the perturbed waveguides.

公开(公告)号：US20180180809A1

公开(公告)日：2018-06-28

申请号：US15901483

申请日：2018-02-21

Applicant: Luxtera, Inc.

Inventor： Thierry Pinguet ,  Attila Mekis ,  Steffen Gloeckner

IPC: G02B6/124 ,  G02B6/42 ,  G01J1/04 ,  G02B6/12 ,  G02B6/30 ,  G01J1/02 ,  G02B6/34

CPC classification number: G02B6/124 ,  G01J1/02 ,  G01J1/0425 ,  G02B6/12004 ,  G02B6/30 ,  G02B6/34 ,  G02B6/4208 ,  G02B2006/12038 ,  G02B2006/12061 ,  G02B2006/12104 ,  G02B2006/12157

Abstract: A method and system for coupling optical signals into silicon optoelectronic chips are disclosed and may include coupling one or more optical signals into a back surface of a CMOS photonic chip comprising photonic, electronic, and optoelectronic devices. The devices may be integrated in a front surface of the chip and one or more optical couplers may receive the optical signals in the front surface of the chip. The optical signals may be coupled into the back surface of the chip via one or more optical fibers and/or optical source assemblies. The optical signals may be coupled to the grating couplers via a light path etched in the chip, which may be refilled with silicon dioxide. The chip may be flip-chip bonded to a packaging substrate. Optical signals may be reflected back to the grating couplers via metal reflectors, which may be integrated in dielectric layers on the chip.

公开(公告)号：US09971107B2

公开(公告)日：2018-05-15

申请号：US14606839

申请日：2015-01-27

Applicant: Luxtera, Inc.

Inventor： Attila Mekis ,  Peng Sun ,  Steffen Gloeckner ,  Michael Mack ,  Steve Hovey

IPC: H04B10/00 ,  G02B6/42 ,  G02B6/12

CPC classification number: G02B6/4213 ,  G02B2006/12107

Abstract: Methods and systems for coupling a light source assembly to an optical integrated circuit are disclosed and may include a system comprising a laser source assembly having a laser, a rotator, and a mirror, where the laser source assembly is coupled to a die including an angled grating coupler and a waveguide. The system may generate an optical signal utilizing the laser, rotate the polarization of the optical signal utilizing the rotator, reflect the rotated optical signal onto the grating coupler on the die, and couple the optical signal to the waveguide, where an angle between a grating coupler axis that is parallel to the waveguide and a plane of incidence of the optical signal reflected to the angled grating coupler is non-zero. The angle between the grating coupler axis and the plane of incidence of the optical signal reflected to the angled grating coupler may be 45 degrees.

公开(公告)号：US20180067342A1

公开(公告)日：2018-03-08

申请号：US15812517

申请日：2017-11-14

Applicant: Luxtera, Inc.

Inventor： Attila Mekis ,  Adithyaram Narasimha ,  Jeremy Witzens

IPC: G02F1/01 ,  G02F1/313 ,  G02B6/34 ,  G02B6/42 ,  G02B6/125 ,  G02B6/293 ,  G02B6/27 ,  G02B6/126 ,  G02B6/12

CPC classification number: G02F1/0136 ,  G02B6/125 ,  G02B6/126 ,  G02B6/2726 ,  G02B6/2773 ,  G02B6/29344 ,  G02B6/34 ,  G02B6/4286 ,  G02B2006/12142 ,  G02F1/011 ,  G02F1/313

Abstract: A system for integrated power combiners is disclosed and may include receiving optical signals in input optical waveguides and phase-modulating the signals to configure a phase offset between signals received at a first optical coupler, where the first optical coupler may generate output signals having substantially equal optical powers. Output signals of the first optical coupler may be phase-modulated to configure a phase offset between signals received at a second optical coupler, which may generate an output signal having an optical power of essentially zero and a second output signal having a maximized optical power. Optical signals received by the input optical waveguides may be generated utilizing a polarization-splitting grating coupler to enable polarization-insensitive combining of optical signals. Optical power may be monitored using optical detectors. The monitoring of optical power may be used to determine a desired phase offset between the signals received at the first optical coupler.

公开(公告)号：US20170115458A1

公开(公告)日：2017-04-27

申请号：US15299098

申请日：2016-10-20

Applicant: Luxtera, Inc.

Inventor： Attila Mekis ,  Peter De Dobbelaere ,  Gianlorenzo Masini ,  Yannick De Koninck ,  Thierry Pinguet

IPC: G02B6/42 ,  H04B10/80 ,  G02B6/34

CPC classification number: G02B6/428 ,  G02B6/124 ,  G02B6/30 ,  G02B6/34 ,  G02B6/3897 ,  G02B6/4206 ,  G02B6/4208 ,  G02B6/4214 ,  G02B6/4239 ,  G02B6/424 ,  G02B6/4245 ,  G02B6/4255 ,  H04B10/501 ,  H04B10/801

Abstract: Methods and systems for a chip-on-wafer-on-substrate assembly are disclosed and may include in an integrated optical communication system comprising an electronics die and a substrate. The electronics die is bonded to a first surface of a photonic interposer and the substrate is coupled to a second surface of the photonic interposer opposite to the first surface. An optical fiber and a light source assembly are coupled to the second surface of the interposer in one or more cavities formed in the substrate. The integrated optical communication system is operable to receive a continuous wave (CW) optical signal in the photonic interposer from the light source assembly; and communicate a modulated optical signal to the optical fiber from said photonic interposer. A mold compound may be on the first surface of the interposer and in contact with the electronics die. The received CW optical signal may be coupled to an optical waveguide in the photonic interposer using a grating coupler.

公开(公告)号：US20170026123A1

公开(公告)日：2017-01-26

申请号：US14612496

申请日：2015-02-03

Applicant: Luxtera, Inc.

Inventor： Peter DeDobbelaere ,  Christopher Bergey ,  Attila Mekis

IPC: H04B10/25 ,  G02B6/34 ,  G02B6/124 ,  G02B6/12 ,  H04J14/02 ,  H04B10/40

CPC classification number: H04B10/2503 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/305 ,  G02B6/34 ,  H04B10/40 ,  H04B10/506 ,  H04J14/0202

Abstract: Methods and systems for a bi-directional receiver for standard single-mode fiber based on grating couplers may include, in a photonically-enabled integrated circuit comprising an optoelectronic transceiver, a multi-wavelength grating coupler, and first and second optical source assemblies coupled to the photonically-enabled integrated circuit: coupling first and second source optical signals at first and second wavelengths into the photonically-enabled integrated circuit using the first and second optical source assemblies, where the second wavelength is different from the first wavelength, receiving a first optical data signal at the first wavelength from an optical fiber coupled to the multi-wavelength grating coupler, and receiving a second optical data signal at the second wavelength from the optical fiber. Third and fourth optical data signals at the first and second wavelengths may be communicated out of the optoelectronic transceiver via the multi-wavelength grating coupler.

Abstract translation: 用于基于光栅耦合器的标准单模光纤的双向接收器的方法和系统可以包括在包括光电收发器的光子学启用的集成电路中，多波长光栅耦合器以及耦合到 所述光子学使能集成电路：使用所述第一和第二光源组件将第一和第二波长的第一和第二源光信号耦合到所述光子启用集成电路中，其中所述第二波长不同于所述第一波长，接收第一光学 从耦合到多波长光栅耦合器的光纤获得第一波长的数据信号，以及从光纤接收第二波长的第二光数据信号。 可以经由多波长光栅耦合器将第一和第二波长的第三和第四光学数据信号传送出光电收发器。