Patents by Inventor Rohinton Dehmubed

Rohinton Dehmubed 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: 7333731
    Abstract: An integrated circuit (and optical transceiver module) includes an optoelectronic thyristor device formed within a resonant cavity on a substrate, and circuitry integrally formed on the substrate that dynamically switches the thyristor between a transmit mode configuration and a receive mode configuration. In the transmit mode configuration, the thyristor is modulated between a non-lasing state and a lasing state in accordance with an input digital electrical signal. In the receive mode configuration, the thyristor device is modulated between a non-lasing OFF state and a non-lasing ON state in accordance with an input digital optical signal that is injected into the resonant cavity to thereby produce an output digital electrical data signal that corresponds to the input digital optical signal. The integrated circuit (and optical transceiver module) can be used in optical fiber applications as well as free-space applications.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: February 19, 2008
    Assignees: The University of Connecticut, Opel, Inc.
    Inventors: Geoff W. Taylor, Rohinton Dehmubed
  • Patent number: 7333733
    Abstract: An optoelectronic pulse generator is provided that includes a thyristor detector/emitter device having an input port and an output port. The thyristor detector/emitter device is adapted to detect an input optical pulse supplied to the input port and to produce an output optical pulse (via laser emission) and an output electrical pulse in response to the detected input optical pulse. The output optical pulse is output via the output port. An optical feedback path is operably coupled between the output port and the input port of the thyristor detector/emitter device. The optical feedback path supplies a portion of the output optical pulse produced by the thyristor detector/emitter device to the input port, thereby causing the thyristor detector/emitter device to produce a sequence of output optical pulses and a corresponding sequence of output electrical pulses.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: February 19, 2008
    Assignees: The University of Connecticut, Opel, Inc.
    Inventors: Geoff W. Taylor, Rohinton Dehmubed, Daniel C. Upp
  • Publication number: 20050238360
    Abstract: An integrated circuit (and optical transceiver module) is disclosed employing an optoelectronic thyristor device formed within a resonant cavity on a substrate, and a circuit integrally formed on the substrate. The circuit dynamically switches the thyristor between a transmit mode configuration and a receive mode configuration. In the transmit mode configuration, the thyristor is modulated between a non-lasing state and a lasing state in accordance with an input digital electrical signal, to thereby produce an output digital optical data signal that corresponds to the input digital electrical signal. In the receive mode configuration, the thyristor device is modulated between an non-lasing OFF state and a non-lasing ON state in accordance with an input digital optical signal that is injected into the resonant cavity, to thereby produce an output digital electrical data signal that corresponds to the input digital optical signal.
    Type: Application
    Filed: April 26, 2004
    Publication date: October 27, 2005
    Inventors: Geoff Taylor, Rohinton Dehmubed
  • Patent number: 6954473
    Abstract: An optoelectronic integrated circuit includes a resonant cavity formed on a substrate. A heterojunction thyristor device is formed in the resonant cavity and operates to detect an input optical pulse (or input electrical pulse) and produce an output optical pulse via laser emission in response to the detected input pulse. The heterojunction thyristor device includes a channel region that is coupled to a current source that draws current from the channel region. Time delay between the input pulse and output optical pulse may be varied by configuring the current source to draw constant current from the channel region and modulating the intensity of the input pulse, or by varying the amount of current drawn from the channel region by the current source. The heterojunction thyristor device may be formed from a multilayer structure of group III-V materials, or from a multilayer structure of strained silicon materials.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: October 11, 2005
    Assignees: Opel, Inc., The University of Connecticut
    Inventors: Rohinton Dehmubed, Geoff W. Taylor, Daniel C. Upp, Jianhong Cai
  • Publication number: 20040081467
    Abstract: An optoelectronic pulse generator is provided that includes a thyristor detector/emitter device having an input port and an output port. The thyristor detector/emitter device is adapted to detect an input optical pulse supplied to the input port and to produce an output optical pulse (via laser emission) and an output electrical pulse in response to the detected input optical pulse. The output optical pulse is output via the output port. An optical feedback path is operably coupled between the output port and the input port of the thyristor detector/emitter device. The optical feedback path supplies a portion of the output optical pulse produced by the thyristor detector/emitter device to the input port, thereby causing the thyristor detector/emitter device to produce a sequence of output optical pulses and a corresponding sequence of output electrical pulses.
    Type: Application
    Filed: March 7, 2003
    Publication date: April 29, 2004
    Inventors: Geoff W. Taylor, Rohinton Dehmubed, Daniel C. Upp
  • Publication number: 20040081216
    Abstract: An optoelectronic integrated circuit includes a resonant cavity formed on a substrate. A heterojunction thyristor device is formed in the resonant cavity and operates to detect an input optical pulse (or input electrical pulse) and produce an output optical pulse via laser emission in response to the detected input pulse. The heterojunction thyristor device includes a channel region that is coupled to a current source that draws current from the channel region. Time delay between the input pulse and output optical pulse may be varied by configuring the current source to draw constant current from the channel region and modulating the intensity of the input pulse, or by varying the amount of current drawn from the channel region by the current source. The heterojunction thyristor device may be formed from a multilayer structure of group III-V materials, or from a multilayer structure of strained silicon materials.
    Type: Application
    Filed: October 25, 2002
    Publication date: April 29, 2004
    Inventors: Rohinton Dehmubed, Geoff W. Taylor, Daniel C. Upp, Jianhong Cai