1 |
SATELLITE SYSTEM USING OPTICAL GATEWAYS AND GROUND BASED BEAMFORMING |
US15682785 |
2017-08-22 |
US20180069629A1 |
2018-03-08 |
Ghislain Turgeon; Vijaya Gallagher; Leah Wang |
Described herein are ground based subsystems, and related methods, for use in transmitting an optical feeder uplink beam to a satellite that includes a multiple element antenna feed array and that is configured to accept the optical feeder uplink beam and in dependence thereon use the multiple element antenna feed array to produce and transmit a plurality of radio frequency (RF) service downlink beams to service terminals. Certain embodiments are related to a ground based beamformer (GBBF) for inclusion in a ground based subsystem, and methods for use therewith. Beneficially, embodiments described herein allow for flexible antenna beam forming for large signal bandwidth without the limitation associated with the available gateway uplink and downlink spectrum at RF frequencies. Also described herein are space based subsystems for use with such ground based subsystems. |
2 |
Optical transmitters and receivers for quantum key distribution |
US12863509 |
2009-01-23 |
US09148225B2 |
2015-09-29 |
Brian Sinclair Lowans; Richard Michael Jenkins; Ewan David Finlayson |
An optical receiver for a quantum key distribution system comprises a plurality of optical components mounted or formed in a substrate and optically coupled by one or more hollow core waveguides formed in the substrate. |
3 |
dixon |
US1193999D |
|
US1193999A |
1916-08-08 |
|
|
4 |
Methods, devices and systems that dissipate heat and facilitate optical alignment in optical communications modules |
US14872043 |
2015-09-30 |
US09791645B2 |
2017-10-17 |
David J. K. Meadowcroft; Robert G. Ritter; Pengyue Wen; Hui Xu |
A heat dissipation system for an optical communications module is provided that includes a cold block on which the optoelectronic components and a lens assembly of an OSA of the module are mounted. The cold block has precisely-controlled mounting surface heights that precisely passively align the lens assembly in directions normal to mounting surfaces of the cold block. The cold block is made of a material of very high thermal conductivity, typically copper, so that heat generated by the optoelectronic components is dissipated into the cold block to maintain the optoelectronic components well below maximum allowable temperatures. In addition, an optical interface device of the OSA has a low-profile and an optical configuration that allows it to be used with a high optical fiber count. |
5 |
METHODS, DEVICES AND SYSTEMS THAT DISSIPATE HEAT AND FACILITATE OPTICAL ALIGNMENT IN OPTICAL COMMUNICATIONS MODULES |
US14872043 |
2015-09-30 |
US20170090130A1 |
2017-03-30 |
David J.K. Meadowcroft; Robert G. Ritter; Pengyue Wen; Hui Xu |
A heat dissipation system for an optical communications module is provided that includes a cold block on which the optoelectronic components and a lens assembly of an OSA of the module are mounted. The cold block has precisely-controlled mounting surface heights that precisely passively align the lens assembly in directions normal to mounting surfaces of the cold block. The cold block is made of a material of very high thermal conductivity, typically copper, so that heat generated by the optoelectronic components is dissipated into the cold block to maintain the optoelectronic components well below maximum allowable temperatures. In addition, an optical interface device of the OSA has a low-profile and an optical configuration that allows it to be used with a high optical fiber count. |
6 |
OPTICAL TRANSMITTERS AND RECEIVERS FOR QUANTUM KEY DISTRIBUTION |
US12863509 |
2009-01-23 |
US20100290626A1 |
2010-11-18 |
Richard Michael Jenkins; Brian Sinclair Lowans; Ewan David Finlayson |
An optical receiver for a quantum key distribution system comprises a plurality of optical components mounted or formed in a substrate and optically coupled by one or more hollow core waveguides formed in the substrate. |
7 |
Transmitting and recording sounds by radiant energy |
US341213D |
|
US341213A |
1886-05-04 |
|
|
8 |
Optical transmitter and an optical receiver for quantum key distribution |
JP2010543562 |
2009-01-23 |
JP2011511523A |
2011-04-07 |
ジエンキンズ,リチヤード・マイケル; フインレイソン,ユアン・デイビツド; ローワンス,ブライアン・シンクレア |
An optical receiver for a quantum key distribution system comprises a plurality of optical components mounted or formed in a substrate and optically coupled by one or more hollow core waveguides formed in the substrate. |
9 |
Satellite system using optical gateways and ground based beamforming |
US15682785 |
2017-08-22 |
US10142021B2 |
2018-11-27 |
Ghislain Turgeon; Vijaya Gallagher; Leah Wang |
Described herein are ground based subsystems, and related methods, for use in transmitting an optical feeder uplink beam to a satellite that includes a multiple element antenna feed array and that is configured to accept the optical feeder uplink beam and in dependence thereon use the multiple element antenna feed array to produce and transmit a plurality of radio frequency (RF) service downlink beams to service terminals. Certain embodiments are related to a ground based beamformer (GBBF) for inclusion in a ground based subsystem, and methods for use therewith. Beneficially, embodiments described herein allow for flexible antenna beam forming for large signal bandwidth without the limitation associated with the available gateway uplink and downlink spectrum at RF frequencies. Also described herein are space based subsystems for use with such ground based subsystems. |
10 |
Method and apparatus for fault-tolerant quantum communication based on solid-state photon emitters |
US12090020 |
2006-10-11 |
US08913900B2 |
2014-12-16 |
Mikhail Lukin; Lilian I. Childress; Jacob M. Taylor; Anders S. Sorensen |
A novel method and apparatus for long distance quantum communication in realistic, lossy photonic channels is disclosed. The method uses single emitters of light as intermediate nodes in the channel. One electronic spin and one nuclear spin coupled via the contact hyperfine interaction in each emitter, provide quantum memory and enable active error purification. It is shown that the fixed, minimal physical resources associated with these two degrees of freedom suffice to correct arbitrary errors, making our protocol robust to all realistic sources of decoherence. The method is particularly well suited for implementation using recently-developed solid-state nano-photonic devices. |
11 |
Single photon emission system |
US12874995 |
2010-09-02 |
US08842949B2 |
2014-09-23 |
Tim Schröder; Oliver Benson; Andreas Schell; Philip Engel; Moritz Julian Banholzer; Friedemann Gädeke; Gerhard Birkl |
An embodiment of the invention relates to a single photon emission system having a proximal end, a distal end, and a single photon emitter located between the proximal end and the distal end; wherein the single photon emission system is adapted to guide optical pump radiation, which is inputted at the proximal end to optically excite the single photon emitter, along a predefined direction that runs from the proximal end to the distal end; and wherein single photons emitted by said single photon emitter, are guided along said predefined direction to the distal end. |
12 |
SINGLE PHOTON EMISSION SYSTEM |
US12874995 |
2010-09-02 |
US20120056111A1 |
2012-03-08 |
Tim SCHRÖDER; Oliver BENSON; Andreas SCHELL; Philip ENGEL; Moritz Julian BANHOLZER; Friedemann GÄDEKE; Gerhard BIRKL |
An embodiment of the invention relates to a single photon emission system having a proximal end, a distal end, and a single photon emitter located between the proximal end and the distal end; wherein the single photon emission system is adapted to guide optical pump radiation, which is inputted at the proximal end to optically excite the single photon emitter, along a predefined direction that runs from the proximal end to the distal end; and wherein single photons emitted by said single photon emitter, are guided along said predefined direction to the distal end. |
13 |
Method and Apparatus for Fault-Tolerant Quantum Communication Based on Solid-State Photon Emitters |
US12090020 |
2006-10-11 |
US20110222848A1 |
2011-09-15 |
Mikhail Lukin; Lillian I. Childress; Jacob M. Taylor; Anders S. Sorensen |
A novel method and apparatus for long distance quantum communication in realistic, lossy photonic channels is disclosed. The method uses single emitters of light as intermediate nodes in the channel. One electronic spin and one nuclear spin coupled via the contact hyperfine interaction in each emitter, provide quantum memory and enable active error purification. It is shown that the fixed, minimal physical resources associated with these two degrees of freedom suffice to correct arbitrary errors, making our protocol robust to all realistic sources of decoherence. The method is particularly well suited for implementation using recently-developed solid-state nano-photonic devices. |
14 |
METHOD AND APPARATUS FOR FAULT-TOLERANT QUANTUM COMMUNICATION BASED ON SOLID-STATE PHOTON EMITTERS |
PCT/US2006039632 |
2006-10-11 |
WO2007044759A2 |
2007-04-19 |
LUKIN MIKHAIL; CHILDRESS LILIAN I; TAYLOR JACOB M; SORENSON ANDERS S |
A novel method and apparatus for long distance quantum communication in realistic, lossy photonic channels is disclosed. The method uses single emitters of light as intermediate nodes in the channel. One electronic spin and one nuclear spin coupled via the contact hyperfme interaction in each emitter, provide quantum memory and enable active error purification. It is shown that the fixed, minimal physical resources associated with these two degrees of freedom suffice to correct arbitrary errors, making our protocol robust to all realistic sources of decoherence. The method is particularly well suited for implementation using recently-developed solid-state nano-photonic devices. |