Patents by Inventor Todd Tanji

Todd Tanji 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).

  • Device for coupling drive circuitry to electroabsorption modulator
    Patent number: 6836350
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: December 28, 2004
    Assignees: T-Networks, Inc., AMCC
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer
  • Device for coupling drive circuitry to electroabsorption modulator
    Patent number: 6825964
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: November 30, 2004
    Assignees: T-Networks, Inc., AMCC
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer
  • Device for coupling drive circuitry to electroabsorption modulator
    Publication number: 20040169907
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer
  • Device for coupling drive circuitry to electroabsorption modulator
    Publication number: 20030090774
    Abstract: Drive circuitry to provide a DC bias voltage and a high frequency modulation current to an electroabsorption modulator (EAM), including a high frequency modulation current source, a coupling capacitor, and a first DC lead. The drive circuitry may include termination circuitry. One lead of the high frequency modulation current source is electrically coupled to the first semiconductor type contact of the EAM and the other lead of the high frequency modulation current source is electrically coupled to an AC ground. The coupling capacitor includes a first electrode electrically coupled to the second semiconductor type contact of the EAM, a second electrode electrically coupled to the AC ground, and a dielectric layer between the electrodes. The first DC lead is electrically coupled to the EAM-side capacitor electrode and configured to be coupled to a first DC potential.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 15, 2003
    Inventors: Prashant Singh, Helga Foulk, Scott Redinger, Todd Tanji, Keith Maile, John Stronczer