Patents by Inventor Vikram K. NARAYANA

Vikram K. NARAYANA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10564512
    Abstract: Photonic data routing in optical networks is expected overcome the limitations of electronic routers with respect to data rate, latency, and energy consumption. However photonics-based routers suffer from dynamic power consumption, and non-simultaneous usage of multiple wavelength channels when microrings are deployed and are sizable in footprint. Here we show a design for the first hybrid photonic-plasmonic, non-blocking, broadband 5×5 router based on 3-waveguide silicon photonic-plasmonic 2×2 switches. The compactness of the router (footprint <200 ?m2) results in a short optical propagation delay (0.4 ps) enabling high data capacity up to 2 Tbps. The router has an average energy consumption ranging from 0.1˜1.0 fJ/bit depending on either DWDM or CDWM operation, enabled by the low electrical capacitance of the switch. The total average routing insertion loss of 2.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: February 18, 2020
    Assignee: The George Washington University
    Inventors: Shuai Sun, Volker J. Sorger, Tarek El-Ghazawi, Vikram K. Narayana
  • Patent number: 10318680
    Abstract: An optical-electronic device can be controlled by a bias voltage to simulate an electronic component such as a resistor, capacitor, inductor with resistor, or capacitor with resistor. The optical-electronic device can be connected in a network to perform computations, model problems, simulate properties such as physical properties (for instance heat transfer), and achieve circuit performances to carry out computations in the analog domain, all at faster speed with smaller size and at less energy.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: June 11, 2019
    Assignee: The George Washington University
    Inventors: Tarek El-Ghazawi, Volker J. Sorger, Shuai Sun, Abdel-Hameed A. Badawy, Vikram K. Narayana
  • Patent number: 10256600
    Abstract: The Hybrid Photonic Plasmonic Interconnect (HyPPI) combines both low loss photonic signal propagation and passive routing with ultra-compact plasmonic devices. These optical interconnects therefore uniquely combine fast operational data-bandwidths (in hundreds of Gbps) for light manipulation with low optical attenuation losses by hybridizing low loss photonics with strong light-matter-interaction plasmonics to create, modulate, switch and detect light efficiently at the same time. Initial implementations were considered for on-chip photonic integration, but also promising for free space or fiber-based systems. In general two technical options exist, which distinguished by the method the electric-optic conversion is executed: the extrinsic modulation method consists of an continuous wave source such as an LED or laser operating at steady power output, and signal encoding is done via an electro-optic modulator downstream of the source in the interconnect.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 9, 2019
    Assignee: The George Washington University
    Inventors: Shuai Sun, Volker J. Sorger, Tarek El-Ghazawi, Vikram K. Narayana, Abdel-Hameed A. Badawy
  • Publication number: 20180246391
    Abstract: Photonic data routing in optical networks is expected overcome the limitations of electronic routers with respect to data rate, latency, and energy consumption. However photonics-based routers suffer from dynamic power consumption, and non-simultaneous usage of multiple wavelength channels when microrings are deployed and are sizable in footprint. Here we show a design for the first hybrid photonic-plasmonic, non-blocking, broadband 5×5 router based on 3-waveguide silicon photonic-plasmonic 2×2 switches. The compactness of the router (footprint <200 ?m2) results in a short optical propagation delay (0.4 ps) enabling high data capacity up to 2 Tbps. The router has an average energy consumption ranging from 0.1˜1.0 fJ/bit depending on either DWDM or CDWM operation, enabled by the low electrical capacitance of the switch. The total average routing insertion loss of 2.
    Type: Application
    Filed: February 5, 2018
    Publication date: August 30, 2018
    Inventors: Shuai SUN, Volker J. SORGER, Tarek EL-GHAZAWI, Vikram K. NARAYANA
  • Publication number: 20170302053
    Abstract: The Hybrid Photonic Plasmonic Interconnect (HyPPI) combines both low loss photonic signal propagation and passive routing with ultra-compact plasmonic devices. These optical interconnects therefore uniquely combine fast operational data-bandwidths (in hundreds of Gbps) for light manipulation with low optical attenuation losses by hybridizing low loss photonics with strong light-matter-interaction plasmonics to create, modulate, switch and detect light efficiently at the same time. Initial implementations were considered for on-chip photonic integration, but also promising for free space or fiber-based systems. In general two technical options exist, which distinguished by the method the electric-optic conversion is executed: the extrinsic modulation method consists of an continuous wave source such as an LED or laser operating at steady power output, and signal encoding is done via an electro-optic modulator downstream of the source in the interconnect.
    Type: Application
    Filed: June 27, 2016
    Publication date: October 19, 2017
    Inventors: Shuai SUN, Volker J. SORGER, Tarek EL-GHAZAWI, Vikram K. NARAYANA, Abdel-Hameed A. BADAWY
  • Publication number: 20170161417
    Abstract: An optical-electronic device can be controlled by a bias voltage to simulate an electronic component such as a resistor, capacitor, inductor with resistor, or capacitor with resistor. The optical-electronic device can be connected in a network to perform computations, model problems, simulate properties such as physical properties (for instance heat transfer), and achieve circuit performances to carry out computations in the analog domain, all at faster speed with smaller size and at less energy.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 8, 2017
    Inventors: Volker J. SORGER, Shuai SUN, Tarek EL-GHAZAWI, Abdel-Hameed A. BADAWY, Vikram K. NARAYANA