Oracle International Corporation

Other

Infinera Corporation

Kotura, Inc.

USA As Represented by Secretary of the Navy

Kannan Raj

Ashok V Krishnamoorthy

Xuezhe Zheng

John E Cunningham

Ivan Shubin

Hiren D Thacker

Jingqiong Xie

Jeffrey W Denq

Mehdi Asghari

Dazeng Feng

Jagwinder Singh Brar

Guoliang Li

Ronald Ho

David K McElfresh

Dawei Huang

Ying Luo

Wei Qian

Jin-Hyoung Lee

Jin Yao

Michael Oliver McCracken

Sharfuddin Syed

Radhakrishna Valiveti

Abhinava Shivakumar Sadasivarao

Shirong Liao

Edward L Wallace

James R Adleman

Stevan S Djordjevic

Iliya Roitburg

Roshanak Shafiiha

Loukas Paraschis

Daniel C Lee

Jin Hyoung Lee

Amarpal Singh Monga

Alex Edward Hamilton

Patrick J Decker

Wentao Deng

Brian Ho

Giuliano Pennesi

Alan T Hilton-Nickel

Nicholas E Aneshansley

Ted Wallace

Theresa Sze

In accordance with an embodiment, described herein is a system and method for use of virtual reality and/or augmented reality with data center operations and cloud infrastructure services. The approach leverages virtual reality and/or augmented reality, and insights from various sources of data describing the operation of the data center, including data center analytics, for facilitating in-situ diagnostics, operations, monitoring, maintenance, repair, health prognostics, and remote collaboration, toward enhancing the efficiency of managing and running data centers. In accordance with an embodiment, the system can operate with VR/AR devices that can be provided as VR/AR headsets or other devices, that include sensors that measure a data center operator's position, orientation, and movement within a cloud infrastructure or data center environment, and can display a visualization associated with the physical devices of the data center environment, including where appropriate information from other sources useful in performing data center operations.

System and method for use of virtual or augmented reality with data center operations or cloud infrastructure

A method of executing in-session encryption verification includes receiving a plurality of client data packets for transmission through a network; receiving one or more test data packets for verifying an encryption device; merging the client data packets and the one or more test packets into a data stream; selecting security parameters for each packet in the data stream based on a corresponding packet type; encrypting each packet in the data stream using the encryption device and the corresponding security parameters; and transmitting the data stream comprising encrypted packets through the network. The method also includes decrypting the encrypted packets at a receiving system using congruent techniques.

In-service data plane encryption verification

The disclosed embodiments provide a laser source comprising a silicon waveguide formed in a silicon layer, and a cascaded array of hybrid distributed feedback (DFB) lasers formed by locating sections of III-V gain material over the silicon waveguide. Each DFB laser in the cascaded array comprises a section of III-V gain material located over the silicon waveguide, wherein the section of III-V gain material includes an active region that generates light, and a Bragg grating located between the III-V gain material and the silicon waveguide. This Bragg grating has a resonance frequency within a gain bandwidth of the section of III-V material and is transparent to frequencies that differ from the resonance frequency. Moreover, each DFB laser has a hybrid mode that resides partially in the III-V gain material and partially in silicon.

Dual-use laser source comprising a cascaded array of hybrid distributed feedback lasers

An integrated circuit includes an optical source (such as a laser) with a lens, which is disposed on an isolator. This isolator is disposed on a semiconductor layer in a silicon-on-insulator (SOI) platform that includes an optical coupler and an optical waveguide. During operation, the optical source generates an optical signal that propagates toward the isolator so that the lens focuses the optical signal. Furthermore, the isolator reduces or eliminates back reflection of the optical signal toward the optical source, and the optical coupler couples the optical signal into the optical waveguide.

Integrated laser with back-reflection isolator

An optical receiver includes: an active transimpedance amplifier (TIA) that converts a photocurrent from a photosensor into an active voltage signal; a high-speed amplifier that amplifies the active voltage signal to produce an amplified voltage signal that comprises an output for the optical receiver; and a reference-voltage-generation circuit that generates a reference voltage for the high-speed amplifier. This reference-voltage-generation circuit includes a dummy TIA that is identical to the active TIA, but does not receive a live input signal, and produces a dummy voltage signal. It also includes a low-speed amplifier which includes: an active input that receives the active voltage signal from the active TIA output; a dummy input that receives the dummy voltage signal from the dummy TIA output; and an output that controls directly or indirectly the reference voltage for the high-speed amplifier. In the direct control case, the output of low-speed amplifier includes a feedback connection that feeds back into the dummy input. In the indirect control case, the output of low-speed amplifier adjusts the reference voltage for the high-speed amplifier through dummy TIA internal biasing.

Extracting an embedded DC signal to provide a reference voltage for an optical receiver

The disclosed embodiments relate to the design of an equalizer that uses both cross-coupled cascodes and inductive peaking to reduce distortion in a signal received from a communication channel by attenuating lower frequencies and amplifying higher frequencies. At lower frequencies, when the effects of inductive impedance within the equalizer are negligible, the equalizer essentially functions as a traditional cascode amplifier that presents high gain. At higher frequencies, the increases in inductive impedances within the equalizer act to boost a gain of the equalizer.

Continuous time linear equalizer that uses cross-coupled cascodes and inductive peaking

A chip package includes an integrated circuit and an optical integrated circuit (such as a hybrid integrated circuit) with an optical source and/or an optical receiver. The integrated circuit and the optical integrated circuit may be proximate to each other on opposite sides of an interposer in the chip package. Moreover, the integrated circuit may include a driver circuit of electrical signals for the optical source and/or a receiver circuit of electrical signals from the optical receiver. Furthermore, the optical integrated circuit may be positioned in a hole or an etch pit in a substrate, and an alignment feature may mechanically couple the substrate to an optical-fiber assembly, so that the optical-fiber assembly is positioned relative to the interposer and the optical integrated circuit. In particular, the optical-fiber assembly may partially overlap the interposer, so that optical signals are provided and/or received from the optical integrated circuit through the interposer.

Integrated chip package with optical interface

A multi-chip module (MCM) is described. This MCM includes two substrates that are passively self-assembled on another substrate using hydrophilic and hydrophobic materials on facing surfaces of the substrates and liquid surface tension as the restoring force. In particular, regions with a hydrophilic material on the two substrates overlap regions with the hydrophilic material on the other substrate. These regions on the other substrate may be surrounded by a region with a hydrophobic material. In addition, spacers on a surface of at least one of the two substrates may align optical waveguides disposed on the two substrates, so that the optical waveguides are coplanar. This fabrication technique may allow low-loss hybrid optical sources to be fabricated by edge coupling the two substrates. For example, a first of the two substrates may be a III/V compound semiconductor and a second of the two substrates may be a silicon-on-insulator photonic chip.

Self-assembled vertically aligned multi-chip module

A hybrid optical source that provides an optical signal having a wavelength is described. This hybrid optical source comprises an optical amplifier (such as a III-V semiconductor optical amplifier) that is butt-coupled or vertically coupled to a silicon-on-insulator (SOI) platform, and which outputs an optical signal. The SOI platform comprises an optical waveguide that conveys the optical signal. A temperature-compensation element included in the optical waveguide compensates for temperature dependence of the indexes of refraction of the optical amplifier and the optical waveguide. In addition, a reflector, included in or in-line with the optical waveguide and after the temperature-compensation element, reflects a portion of the optical signal and transmits another portion of the optical signal that has the wavelength.

Temperature-insensitive optical component

An integrated circuit includes a holographic recording material substantially filling a cavity in a semiconductor layer. During operation of the integrated circuit, a holographic pattern in the holographic recording is reconstructed and used to diffract an optical signal propagating in a plane of an optical waveguide, which is defined in the semiconductor layer out of the plane through the cavity. In this way, the holographic recording material may be used to couple the optical signal to an optical fiber or another integrated circuit.

Surface-normal optical coupling using a holographic recording material

An optical device has a waveguide immobilized on a base. A lens is defined by the base. A reflecting side reflects a light signal that travels on an optical pathway that extends through the lens and into the waveguide. The reflecting side is positioned to reflect the light signal as the light signal travels along a portion of the optical pathway between the lens and the waveguide. An optical insulator that confines the light signal within the waveguide. The portion of the optical pathway between the lens and the waveguide extends through the optical insulator such that the light signal is transmitted through the optical insulator.

Transfer of light signals between optical devices

A chip package includes a processor, an interposer chip and a voltage regulator module (VRM). The interposer chip is electrically coupled to the processor by first electrical connectors proximate to a surface of the interposer chip. Moreover, the interposer chip includes second electrical connectors proximate to another surface of the interposer chip, which are electrically coupled to the first electrical connectors by through-substrate vias (TSVs) in the interposer chip. Note that the second electrical connectors can electrically couple the interposer chip to a circuit board. Furthermore, the VRM is electrically coupled to the processor by the interposer chip, and is proximate to the processor in the chip package, thereby reducing voltage droop. For example, the VRM may be electrically coupled to the surface of the interposer chip, and may be adjacent to the processor. Alternatively, the VRM may be electrically coupled to the other surface of the interposer chip.

Chip package to support high-frequency processors

An optical de-multiplexer (de-MUX) that includes an optical device that images and diffracts an optical signal using a reflective geometry is described, where a free spectral range (FSR) of the optical device associated with a given diffraction order abuts FSRs associated with adjacent diffraction orders. Moreover, the channel spacings within diffraction orders and between adjacent diffraction orders are equal to the predefined channel spacing associated with the optical signal. As a consequence, the optical device has a comb-filter output spectrum, which reduces a tuning energy of the optical device by eliminating spectral gaps between diffraction orders of the optical device.

Echelle grating with cyclic free-spectral range

In an MCM, an optical signal is conveyed by an optical waveguide disposed on a surface of a first substrate to an optical coupler having a vertical facet. This optical coupler has an optical mode that is different than the optical mode of the optical waveguide. For example, the spatial extent of the optical mode associated with the optical coupler may be larger, thereby reducing optical losses and sensitivity to alignment errors. Then, the optical signal is directly coupled from the vertical facet to a facing vertical facet of an identical optical coupler on another substrate, and the optical signal is conveyed in another optical waveguide disposed on the other substrate.

Direct interlayer optical coupler

Growing community of inventors

San Diego, CA, United States of America

Kannan Raj