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Luxtera Inc patents


Recent patent applications related to Luxtera Inc. Luxtera Inc is listed as an Agent/Assignee. Note: Luxtera Inc may have other listings under different names/spellings. We're not affiliated with Luxtera Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "L" | Luxtera Inc-related inventors


Method and system for connectionless integrated optical receiver and transmitter test

Methods and systems for a connectionless integrated optical receiver and transmitter test are disclosed and may include an optoelectronic transceiver comprising a transmit (tx) path and a receive (rx) path, with each path comprising optical switches. The transceiver may be operable to: generate a first modulated optical signal utilizing a modulator in the tx path, couple the first modulated optical signal to a first optical switch in the rx path via a second optical switch in the tx path when the optoelectronic transceiver is configured in a self-test mode, receive a second modulated optical signal via a grating coupler in the rx path when the optoelectronics transceiver is configured in an operational mode, and communicate the second modulated optical signal to a photodetector in the rx path via the first optical switch. ... Luxtera Inc

Method and system for an optical connection service interface

Methods and systems for an optical connection service interface may include, in an optical data link comprising an optical fiber, a local control system, first and second transceivers at ends of the optical fiber, generating a signal for the local control system at a low frequency and communicating, utilizing the optical fiber, an optical data signal at a high frequency and an optical connection service interface (ocsi) signal at an intermediate frequency. An optical signal may be modulated at the intermediate frequencies for the ocsi, and may be modulated and communicated to the second transceiver. ... Luxtera Inc

Method and system for silicon photonics wavelength division multiplexing transceivers

Methods and systems for silicon photonics wavelength division multiplexing transceivers are disclosed and may include, in a transceiver integrated in a silicon photonics chip: generating a first modulated output optical signal at a first wavelength utilizing a first electrical signal, generating a second modulated output optical signal at a second wavelength utilizing a second electrical signal, communicating the first and second modulated output optical signals into an optical fiber coupled to the chip utilizing a multiplexing grating coupler in the chip. A received input optical signal may be split into a modulated input optical signal at the first wavelength and a modulated input optical signal at the second wavelength utilizing a demultiplexing grating coupler in the chip. ... Luxtera Inc

Method and system for a chip-on-wafer-on-substrate assembly

Methods and systems for a chip-on-wafer-on-substrate assembly are disclosed and may include in an 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. ... Luxtera Inc

Mehtod and system for coupling optical signals into silicon optoelectronic chips

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. ... Luxtera Inc

Integrated transceiver with lightpipe coupler

A transceiver comprising a chip, a semiconductor laser, and one or more photodetectors, the chip comprising optical and optoelectronic devices and electronic circuitry, where the transceiver is operable to: communicate, utilizing the semiconductor laser, an optical source signal into the chip, generate first optical signals in the chip based on the optical source signal, transmit the first optical signals from the chip via a light pipe with a sloped reflective surface coupled to the chip, and receive second optical signals from the light pipe and converting the second optical signals to electrical signals via the photodetectors. The optical signals may be communicated out of and in to a top surface of the chip. ... Luxtera Inc

Method and system for partial integration of wavelength division multiplexing and bi-directional solutions

Methods and systems for partial integration of wavelength division multiplexing and bi-directional solutions are disclosed and may include, an optical transceiver on a silicon photonics integrated circuit coupled to a planar lightwave circuit (plc). The silicon photonics integrated circuit may include a first modulator and first light source that operates at a first wavelength and a second modulator and second light source that operates at a second wavelength. ... Luxtera Inc

Method and system for hybrid integration of optical communication systems

Methods and systems for hybrid integration of optical communication systems are disclosed and may include receiving a continuous wave (cw) optical signal in a silicon photonics die (spd) from an optical source external to the spd. The received cw optical signal may be processed based on electrical signals received from an electronics die bonded to the spd via metal interconnects. ... Luxtera Inc

Method and system for a polarization immune wavelength division multiplexing demultiplexer

Methods and systems for a polarization immune wavelength division multiplexing demultiplexer are disclosed and may include, in an optoelectronic transceiver having an input coupler, a demultiplexer, and an amplitude scrambler: receiving input optical signals via the input coupler, communicating the input optical signals to the amplitude scrambler via waveguides, configuring the average optical power in each of the waveguides utilizing the amplitude scrambler, and demultiplexing the optical signals utilizing the demultiplexer. The amplitude scrambler may include phase modulators and a coupling section. ... Luxtera Inc

Method and system for a photonic interposer

Methods and systems for a photonic interposer are disclosed and may include receiving one or more continuous wave (cw) optical signals in a silicon photonic interposer from an external optical source, from an optical source assembly via optical fibers coupled to the silicon photonic interposer. A modulated optical signal may be generated by processing the received cw optical signals based on a first electrical signal received from the electronics die. ... Luxtera Inc

Method and system for integrated power combiners

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. ... Luxtera Inc

Method and system for a narrowband, non-linear optoelectronic receiver

Methods and systems for a narrowband, non-linear optoelectronic receiver are disclosed and may include amplifying a received signal, limiting a bandwidth of the received signal, and restoring the signal utilizing a level restorer, which may include a non-return to zero (nrz) level restorer. The nrz level restorer may include a pulse-triggered bistable circuit, which may include two parallel inverters, with one being a feedback path for the other. ... Luxtera Inc

Method and system for optical alignment to a silicon photonically-enabled integrated circuit

Methods and systems for optical alignment to a silicon photonically-enabled integrated circuit may include aligning an optical assembly to a photonics die comprising a transceiver by, at least, communicating optical signals from the optical assembly into a plurality of grating couplers in the photonics die, communicating the one or more optical signals from the plurality of grating couplers to optical taps, with each tap having a first output coupled to the transceiver and a second output coupled to a corresponding output grating coupler, and monitoring an output optical signal communicated out of said photonic chip via said output grating couplers. The monitored output optical signal may be maximized by adjusting a position of the optical assembly. ... Luxtera Inc

Method and system for a vertical junction high-speed phase modulator

Methods and systems for a vertical junction high-speed phase modulator are disclosed and may include a semiconductor device having a semiconductor waveguide including a slab section, a rib section extending above the slab section, and raised ridges extending above the slab section on both sides of the rib section. The semiconductor device has a vertical pn junction with p-doped material and n-doped material arranged vertically with respect to each other in the rib and slab sections. ... Luxtera Inc

02/22/18 / #20180054335

Method and system for split voltage domain receiver circuits

Methods and systems for split voltage domain receiver circuits are disclosed and may include amplifying complementary received signals in a plurality of partial voltage domains. The signals may be combined into a single differential signal in a single voltage domain. ... Luxtera Inc

01/25/18 / #20180026597

Method and system for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop

Methods and systems for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop is disclosed and may include, in a transimpedance amplifier (tia) circuit comprising a first tia, a second tia, and a third tia, each comprising a configurable feedback impedance, and a control loop, where the control loop comprises a gain stage with inputs coupled to outputs of the first and second tias and an output coupled to the configurable feedback impedance of the second and third tias: configuring a gain level of the first tia by configuring its feedback impedance, configuring a gain level of the third tia by configuring a reference current applied to an input of the first tia, and amplifying a received electrical signal to generate an output voltage utilizing the third tia. The reference current may generate a reference voltage at one of the inputs of the gain stage.. ... Luxtera Inc

01/18/18 / #20180017747

Method and system for implementing high-speed electrical interfaces between semiconductor dies in optical communication systems

A method and system for implementing high-speed electrical interfaces between semiconductor dies in optical communication systems are disclosed and may include communicating electrical signals between a first die and a second die via coupling pads which may be located in low impedance points in tx and rx paths. The electrical signals may be communicated via one or more current-mode, controlled impedance, and/or capacitively-coupled interfaces. ... Luxtera Inc

01/11/18 / #20180013494

Method and system for selectable parallel optical fiber and wavelength division multiplexed operation

Methods and systems for selectable parallel optical fiber and wdm operation may include an optoelectronic transceiver integrated in a silicon photonics die. The optoelectronic transceiver may, in a first communication mode, communicate continuous wave (cw) optical signals from an optical source module to a first subset of optical couplers on the die for processing signals in optical modulators in accordance with a first communications protocol, and in a second communication mode, communicate the cw optical signals to a second subset of optical couplers for processing signals in the optical modulators in accordance with a second communications protocol. ... Luxtera Inc

01/04/18 / #20180006732

Method and system for waveguide delay based equalization with summing at single-ended to differential converters in optical communication

Methods and systems for waveguide delay based equalization summing at single-ended to differential converters in optical communication are disclosed and may include: in an optoelectronic receiver including a directional coupler, photodetectors, transimpedance amplifiers (tias), and a gain stage, receiving an input optical signal; splitting the input optical signal into first and second optical signals using the directional coupler; generating a first current from the first optical signal using a first photodetector; generating a first voltage from the first current using a first tia; communicating the first voltage to a first input of the gain stage; generating a second current from the second optical signal using a second photodetector; generating a second voltage from the first signal using a second tia; communicating the second voltage to a second input of the gain stage; and generating a differential output voltage from the first and second voltages using the gain stage.. . ... Luxtera Inc

01/04/18 / #20180006731

Method and system for waveguide delay based equalization with current and optical summing in optical communication

Methods and systems for waveguide delay based equalization with current and optical summing in optical communication are disclosed and may include an optoelectronic receiver including a directional coupler, two or more photodiodes, and one or more current mirrors. The optoelectronic receiver may be operable to: receive an input optical signal; split the input optical signal into first and second optical signals using the directional coupler; generate a first electrical from the first optical signal using a first photodiode; generate a second electrical signal from the second optical signal using a second photodiode; amplify the second electrical signal using the current mirror; and sum the first electrical signal with the amplified second electrical signal. ... Luxtera Inc

01/04/18 / #20180006727

Method and system for redundant light sources by utilizing two inputs of an integrated modulator

Methods and systems for redundant light sources by utilizing two inputs of an integrated modulator are disclosed and may include: an optoelectronic transmitter integrated in a semiconductor die with first and second laser sources coupled to the semiconductor die, said optoelectronic transmitter comprising an optical modulator with a first input waveguide coupled to the first laser source and second input waveguide coupled to the second laser source, the optoelectronic receiver being operable to: configure the first laser source to provide an optical signal to the first input of the optical modulator; and if the first laser source does not provide an optical signal, configure the second laser source to provide an optical signal to the second input of the optical modulator. The first laser source may be optically coupled to the first input waveguide and the second laser source optically coupled to the second input waveguide using grating couplers.. ... Luxtera Inc

12/14/17 / #20170357066

Method and system for optical power monitoring of a light source assembly coupled to a silicon photonically-enabled integrated circuit

Methods and systems for optical power monitoring of a light source coupled to a silicon integrated circuit (chip) are disclosed and may include, in a system comprising an optical source coupled to the chip: emitting a primary beam from a front facet of a laser in the optical source assembly and a secondary beam from a back facet of the laser, directing the primary beam to an optical coupler in the chip, directing the secondary beam to a surface-illuminated photodiode in the chip, and monitoring an output power of the laser utilizing an output signal from the photodiode. The primary beam may comprise an optical source for a photonics transceiver in the chip. ... Luxtera Inc

11/30/17 / #20170346567

Method and system for a bi-directional multi-wavelength receiver for standard single-mode fiber based on grating couplers

Methods and systems for a bi-directional receiver for standard single-mode fiber based on grating couplers may include, in an integrated circuit comprising an optoelectronic transceiver, a multi-wavelength grating coupler, and first and second optical sources coupled to the 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 sources, 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.. ... Luxtera Inc

11/23/17 / #20170338782

Method and system for a feedback transimpedance amplifier with sub-40khz low-frequency cutoff

A system for a differential trans-impedance amplifier circuit comprising: an amplifier having a pair of input nodes and configured to generate an amplified replica of a differential voltage on said pair of input nodes; a photodiode; a pair of dc-blocking capacitors coupling said photodiode to said pair of input nodes; at least one resistance coupled between said pair of input nodes of said amplifier; and a bias network comprising two identical photodiode biasing resistances each photodiode biasing resistance coupled in series between said photodiode and a respective dc voltage. A feedback loop for the amplifier may include source followers that are operable to level shift voltages prior to coupling capacitors that couple said photodiode to said amplifier to ensure stable bias conditions for said amplifier. ... Luxtera Inc

11/16/17 / #20170329080

Method and system for integrated multi-port waveguide photodetectors

Methods and systems for integrated multi-port waveguide photodetectors are disclosed and may include an optical receiver on a chip, where the optical receiver comprises a multi-port waveguide photodetector having three or more input ports. The optical receiver may be operable to receive optical signals via one or more grating couplers, couple optical signals to the photodetector via optical waveguides in the chip, and generate an output electrical signal based on the coupled optical signals using the photodetector. ... Luxtera Inc

10/05/17 / #20170285263

Coupling optical signals into silicon optoelectronic chips

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. ... Luxtera Inc

09/07/17 / #20170257171

Method and system for split voltage domain transmitter circuits

Methods and systems for split voltage domain transmitter circuits are disclosed and may include a two-branch output stage including a plurality of cmos transistors, each branch of the two-branch output stage comprising two stacked cmos inverter pairs from among the plurality of cmos transistors; the two stacked cmos inverter pairs of a given branch being configured to drive a respective load, in phase opposition to the other branch; and a pre-driver circuit configured to receive a differential modulating signal and output, to respective inputs of the two stacked cmos inverters, two synchronous differential voltage drive signals having a swing of half the supply voltage and being dc-shifted by half of the supply voltage with respect to each other. The load may include a series of diodes that are driven in differential mode via the drive signals. ... Luxtera Inc

08/17/17 / #20170237516

Method and system for cassette based wavelength division multiplexing

A method and system is provided for cassette based wavelength division multiplexing and may include an optical system with an aggregating cassette. The optical system may include optical transceivers, with each generating optical signals at a different wavelength. ... Luxtera Inc

08/03/17 / #20170219785

Method and system for hybrid integration of optical communication systems

Methods and systems for hybrid integration of optical communication systems are disclosed and may include receiving continuous wave (cw) optical signals in a silicon photonics die (spd) from an optical source external to the spd. The received cw optical signals may be processed based on electrical signals received from an electronics die bonded to the spd via metal interconnects. ... Luxtera Inc

07/13/17 / #20170201813

Method and system for connectionless integrated optical receiver and transmitter test

Methods and systems for a connectionless integrated optical receiver and transmitter test are disclosed and may include an optoelectronic transceiver comprising a transmit (tx) path and a receive (rx) path, with each path comprising optical switches. The transceiver may be operable to: generate a first modulated optical signal utilizing a modulator in the tx path, couple the first modulated optical signal to a first optical switch in the rx path via a second optical switch in the tx path when the optoelectronic transceiver is configured in a self-test mode, receive a second modulated optical signal via a grating coupler in the rx path when the optoelectronics transceiver is configured in an operational mode, and communicate the second modulated optical signal to a photodetector in the rx path via the first optical switch. ... Luxtera Inc

07/06/17 / #20170192182

Method and system for a multi-fiber push-on/pull-off connector locking clip

Methods and systems for a multi-fiber push-on/pull-off connector locking clip are disclosed and may include operatively coupling a multi-fiber push-on/push-off (mpo) connector to an mpo adaptor by inserting the mpo connector into the mpo adaptor, where the mpo connector comprises an mpo connector pull-to-release housing. The mpo connector may be secured to the mpo adaptor by placing an mpo locking clip adjacent to the mpo connector pull-to-release housing, thereby preventing the mpo connector pull-to-release housing from being actuated. ... Luxtera Inc

06/08/17 / #20170163369

Method and system for a polarization immune wavelength division multiplexing demultiplexer

Methods and systems for a polarization immune wavelength division multiplexing demultiplexer are disclosed and may include, in an optoelectronic transceiver having an input coupler, a demultiplexer, and an amplitude scrambler: receiving input optical signals via the input coupler, communicating the input optical signals to the amplitude scrambler via waveguides, configuring the average optical power in each of the waveguides utilizing the amplitude scrambler, and demultiplexing the optical signals utilizing the demultiplexer. The amplitude scrambler may include phase modulators and a coupling section. ... Luxtera Inc

06/08/17 / #20170160469

Method and system for grating couplers incorporating perturbed waveguides

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. ... Luxtera Inc

05/18/17 / #20170141869

Method and system for cassette based wavelength division multiplexing

A method and system is provided for cassette based wavelength division multiplexing. Higher throughput per laser “colored” transceivers are disclosed that can be multiplexed at the patch panel where an implementation may comprise a dense wdm grid that enables parts to meet “psm4” specs natively regardless of color. ... Luxtera Inc

05/18/17 / #20170141853

Method and system for a distributed optoelectronic receiver

Methods and systems for a distributed optoelectronic receiver are disclosed and may include an optoelectronic receiver having a grating coupler, a splitter, a plurality of photodiodes, and a plurality of transimpedance amplifiers (tias). The receiver receives a modulated optical signal utilizing the grating coupler, splits the received signal into a plurality of optical signals, generates a plurality of electrical signals from the plurality of optical signals utilizing the plurality of photodiodes, communicates the plurality of electrical signals to the plurality of tias, amplifies the plurality of electrical signals utilizing the plurality of tias, and generates an output electrical signal from coupled outputs of the plurality of tias. ... Luxtera Inc

05/11/17 / #20170134192

Method and system for split voltage domain receiver circuits

Methods and systems for split voltage domain receiver circuits are disclosed and may include amplifying complementary received signals in a plurality of partial voltage domains. The signals may be combined into a single differential signal in a single voltage domain. ... Luxtera Inc

05/04/17 / #20170126325

Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices

Methods and systems for encoding multi-level pulse amplitude modulated signals using integrated optoelectronics are disclosed and may include generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by first and second electrical input signals, where the optical modulator may configure levels in the multi-level amplitude modulated optical signal, drivers are coupled to the optical modulator; and the first and second electrical input signals may be synchronized before being communicated to the drivers. The optical modulator may include optical modulator elements coupled in series and configured into groups. ... Luxtera Inc

05/04/17 / #20170123239

Method and system for a low-voltage integrated silicon high-speed modulator

Methods and systems for a low-voltage integrated silicon high-speed modulator may include an optical modulator comprising first and second optical waveguides and two optical phase shifters, where each of the two optical phase shifters may comprise a p-n junction with a horizontal section and a vertical section and an optical signal is communicated to the first optical waveguide. A portion of the optical signal may then be coupled to the second optical waveguide. ... Luxtera Inc

04/27/17 / #20170115458

Method and system for a chip-on-wafer-on-substrate assembly

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. ... Luxtera Inc

03/23/17 / #20170082801

Method and system for partial integration of wavelength division multiplexing and bi-directional solutions

Methods and systems for partial integration of wavelength division multiplexing and bi-directional solutions are disclosed and may include, an optical transceiver on a silicon photonics integrated circuit coupled to a planar lightwave circuit (plc). The silicon photonics integrated circuit may include a first modulator and first light source that operates at a first wavelength and a second modulator and second light source that operates at a second wavelength. ... Luxtera Inc

01/26/17 / #20170026124

Method and system for an optical connection service interface

Methods and systems for an optical connection service interface may include, in an optical data link comprising an optical fiber, a local control system, first and second transceivers at ends of the optical fiber, generating a control signal for the local control system at a low frequency and communicating, utilizing the optical fiber, an optical data signal at a high frequency and an optical service signal for an optical connection service interface (ocsi) at an intermediate frequency. An optical signal may be modulated at the intermediate frequencies for the ocsi, and may be modulated and communicated to the second transceiver. ... Luxtera Inc

01/26/17 / #20170026123

Method and system for a bi-directional multi-wavelength receiver for standard single-mode fiber based on grating couplers

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.. ... Luxtera Inc








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