Patents by Inventor Haik Mardoyan

Haik Mardoyan 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).

  • Optical transmitter for transmitting a multilevel amplitude-shift-keying modulated signal
    Patent number: 9621276
    Abstract: An optical transmitter for transmitting a multilevel amplitude-shift-keying modulated signal includes an optical modulator for modulating an optical signal with a multilevel amplitude-shift-keying modulation, and a spectral filter adapted to increase a high-frequency component of the modulated optical signal relatively to a central frequency component. The multilevel ASK modulation is quaternary ASK and the symbol rate of the optical modulator is above 40 Gbaud. An optical link connects the optical transmitter to a quadratic direct detection optical receiver.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: April 11, 2017
    Assignee: Alcatel Lucent
    Inventors: Jeremie Renaudier, Gabriel Charlet, Haik Mardoyan
  • OPTICAL TRANSMITTER FOR TRANSMITTING A MULTILEVEL AMPLITUDE-SHIFT-KEYING MODULATED SIGNAL
    Publication number: 20150207570
    Abstract: An optical transmitter for transmitting a multilevel amplitude-shift-keying modulated signal includes an optical modulator for modulating an optical signal with a multilevel amplitude-shift-keying modulation, and a spectral filter adapted to increase a high-frequency component of the modulated optical signal relatively to a central frequency component. The multilevel ASK modulation is quaternary ASK and the symbol rate of the optical modulator is above 40 Gbaud. An optical link connects the optical transmitter to a quadratic direct detection optical receiver.
    Type: Application
    Filed: June 21, 2013
    Publication date: July 23, 2015
    Inventors: Jeremie Renaudier, Gabriel Charlet, Haik Mardoyan
  • Wavelength grid for DWDM
    Publication number: 20060198636
    Abstract: In order to allow transmission of higher bitrate optical wavelength channels (C1-C4) over a transport network designed for the transmission of lower bitrate optical wavelength channels (A1-A8), the wavelengths of the higher bitrate wavelength channels (C1-C4) are detuned by at least 30% of the channel spacing (S2) the lower bitrate wavelength channels (A1-A8) with respect to a predefined ITU wavelength grid.
    Type: Application
    Filed: February 22, 2006
    Publication date: September 7, 2006
    Inventors: Gabriel Charlet, Patrice Tran, Haik Mardoyan