Hewlett-Packard Development Company, L.p.

Hewlett Packard Enterprise Development LP

Joseph Straznicky

Michael Renne Ty Tan

Paul Kessler Rosenberg

Sagi Varghese Mathai

Shih-Yuan Wang

Wayne V Sorin

Philip John Kuekes

Wei E Wu

Gregory Stuart Snider

Duncan R Stewart

Susant K Patra

Georgios Panotopoulos

Warren J Robinett

M Saiful Islam

Warren Robinett

Wayne Victor Sorin

An optical subassembly includes a thru optical via () formed through a semiconductor substrate (), an optoelectronic component () secured to the substrate () such that an active region () of the optoelectronic component is aligned with the thru optical via (), and circuitry () formed into the substrate (), the circuitry to connect to and operate in accordance with the optoelectronic component ().

Integrated optical sub-assembly

A combination underfill-dam and electrical-interconnect structure for an opto-electronic engine. The structure includes a first plurality of electrical-interconnect solder bodies. The first plurality of electrical-interconnect solder bodies includes a plurality of electrical interconnects. The first plurality of electrical-interconnect solder bodies, is disposed to inhibit intrusion of underfill material into an optical pathway of an opto-electronic component for the opto-electronic engine. A system and an opto-electronic engine that include the combination underfill-dam and electrical interconnect structure are also provided.

Combination underfill-dam and electrical-interconnect structure for an opto-electronic engine

A device for converting and optionally processing an optical signal comprises an optical cable having an optical-electrical conversion device at one end, the optical-electrical conversion device to convert the optical signal to an electrical signal or an electrical signal into an optical signal; a electrical package to removably receive the optical-electrical conversion device and generate processed signal; and a general circuit board attached to the electrical package and operable to receive the processed signal.

Device for converting signal

Various embodiments of the present invention are directed to optical broadcast buses configured with shared optical interfaces for fan-in and fan-out of optical signals. In one aspect, an optical broadcast bus comprises a number of optical interfaces, a fan-in bus optically coupled to the number of optical interfaces, and a fan-out bus optically coupled to the number of optical interfaces. Each optical interface is configured to convert an electrical signal produced by the at least one node into an optical signal that is received and directed by the fan-in bus to the fan-out bus and broadcast by the fan-out bus to the number of optical interfaces. Each optical interface also converts the optical signal into an electrical signal that is sent to the electronically coupled at least one node for processing.

Optical broadcast with buses with shared optical interfaces

Various embodiments of the present invention are directed to methods for determining the resistance state of nanowire-crossbar junctions, and can also be used to determine the resistance state of sub-microscale crossbar junctions. A pair of wires interconnected through the crossbar junction is biased to determine a first signal for the crossbar junction. The pair of wires interconnected through the crossbar junction is then biased again to increase the resistance of the crossbar junction. The pair of wires interconnected through the crossbar junction is then biased again to determine a second signal for the crossbar junction. The first signal is compared to the second signal to determine the resistance state of the crossbar junction.

Method and system for reading the resistance state of junctions in crossbar memory

Various embodiments of the present invention are directed to demultiplexers that include tunneling resistor nanowire junctions, and to nanowire addressing methods for reliably addressing nanowire signal lines in nanoscale and mixed-scale demultiplexers. In one embodiment of the present invention, an encoder-demultiplexer comprises a number of input signal lines and an encoder that generates an n-bit-constant-weight-code code-word internal address for each different input address received on the input signal lines. The encoder-demultiplexer includes n microscale signal lines on which an n-bit-constant-weight-code code-word internal address is output by the encoder, where each microscale signal line carries one bit of the n-bit-constant-weight-code code-word internal address. The encoder-demultiplexer also includes a number of encoder-demultiplexer-addressed nanowire signal lines interconnected with the n microscale signal lines via tunneling resistor junctions, the encoder-demultiplexer-addressed nanowire signal lines each associated with an n-bit-constant-weight-code code-word internal address.

Tunneling-resistor-junction-based microscale/nanoscale demultiplexer arrays

A composite material and related methods are described, the composite material being configured to exhibit a negative effective permittivity and/or a negative effective permeability for incident radiation at an operating wavelength, the composite material comprising an arrangement of electromagnetically reactive cells of small dimension relative to the operating wavelength. Each cell includes an externally powered gain element for enhancing a resonant response of that cell to the incident radiation at the operating wavelength.

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Santa Rosa, CA, United States of America

Joseph Straznicky