Patents by Inventor Dmitri Abakoumov

Dmitri Abakoumov 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: 9235006
    Abstract: Described herein is an optical channel monitor (100), including a plurality of input ports in the form of optical fibers (102) disposed in a vertical “port displacement” dimension. Each fiber (102) inputs a respective optical beam (103) having a plurality of individual wavelength channels. A lens (104) collimates each beam and converges the beams in the port displacement dimension to a focal plane (105). The collimated and converged beams are incident onto a rotatable micro-electromechanical system (MEMS) mirror (106), which selectively directs each optical beam onto a wavelength dispersion element in the form of a grism (108) at a predetermined angle (denoted by ?) in a horizontal “dispersion” plane. The grism (108) spatially separates, in the dispersion plane, the wavelength channels contained within each optical beam (103) by diffraction. The angle at which each channel is diffracted is controlled by the angle ?.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: January 12, 2016
    Assignee: Finisar Corporation
    Inventors: Steven James Frisken, Dmitri Abakoumov
  • Publication number: 20140376909
    Abstract: Described herein is an optical channel monitor (1) including one or more input optical ports (3) for receiving an input optical signal (5) including a plurality of optical channels. A first monitoring module (7) is configured to selectively scan a predetermined spectral region of the optical signal including at least one optical channel for low resolution monitoring. A second monitoring module (11) is configured to simultaneously scan a subregion within the predetermined spectral region for high resolution monitoring.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 25, 2014
    Applicant: FINISAR CORPORATION
    Inventors: Steven James Frisken, Simon Poole, Dmitri Abakoumov
  • Publication number: 20120281982
    Abstract: Described herein is an optical channel monitor (100), including a plurality of input ports in the form of optical fibers (102) disposed in a vertical “port displacement” dimension. Each fiber (102) inputs a respective optical beam (103) having a plurality of individual wavelength channels. A lens (104) collimates each beam and converges the beams in the port displacement dimension to a focal plane (105). The collimated and converged beams are incident onto a rotatable micro-electromechanical system (MEMS) mirror (106), which selectively directs each optical beam onto a wavelength dispersion element in the form of a grism (108) at a predetermined angle (denoted by ?) in a horizontal “dispersion” plane. The grism (108) spatially separates, in the dispersion plane, the wavelength channels contained within each optical beam (103) by diffraction. The angle at which each channel is diffracted is controlled by the angle ?.
    Type: Application
    Filed: May 1, 2012
    Publication date: November 8, 2012
    Applicant: FINISAR CORPORATION
    Inventors: Steven James Frisken, Dmitri Abakoumov
  • Patent number: 7787720
    Abstract: An optical coupling device including: at least a first input port for delivering an optical input signal beam that includes a plurality of wavelength channels; at least a first optical output port for receiving an optical output signal beam; a wavelength dispersion element for spatially separating the plurality of wavelength channels in the optical input signal beam to form a plurality of spatially separated wavelength channel beams; an optical coupling device for independently modifying the phase of each of the spatially separated wavelength channel beams such that, for at least one wavelength channel beam, a selected fraction of the light is coupled to the first output port and a fraction of the light is coupled away from the first output port.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: August 31, 2010
    Assignee: Optium Australia PTY Limited
    Inventors: Steven James Frisken, Glenn Wayne Baxter, Hao Zhou, Dmitri Abakoumov
  • Patent number: 7457547
    Abstract: In an optical system including an optical input port for projecting an input optical signal onto an optical phased matrix array, an optical phased matrix array including a plurality of individually addressable pixels thereon, each said pixel being drivable within a prescribed range of levels, and an optical output port for collecting a predetermined fraction of said optical signal received from said optical phased matrix array; a method of compensating for phase distortions including the steps of: (a) determining a plurality of transfer functions relating said level of each said pixel to the phase variation each said pixel introduces to light from said input optical signal which is incident thereon; and (b) controlling the level of selected ones of said pixels in accordance with a corresponding transfer function such that said fractional signal received at said output port is modified in phase to substantially compensate for optical phase distortions arising from said optical phased matrix array.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: November 25, 2008
    Assignee: Optium Australia Pty Limited
    Inventors: Steven J. Frisken, Glenn W. Baxter, Hao Zhou, Dmitri Abakoumov
  • Publication number: 20060098156
    Abstract: In an optical system including an optical input port for projecting an input optical signal onto an optical phased matrix array, an optical phased matrix array including a plurality of individually addressable pixels thereon, each said pixel being drivable within a prescribed range of levels, and an optical output port for collecting a predetermined fraction of said optical signal received from said optical phased matrix array; a method of compensating for phase distortions including the steps of: (a) determining a plurality of transfer functions relating said level of each said pixel to the phase variation each said pixel introduces to light from said input optical signal which is incident thereon; and (b) controlling the level of selected ones of said pixels in accordance with a corresponding transfer function such that said fractional signal received at said output port is modified in phase to substantially compensate for optical phase distortions arising from said optical phased matrix array.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 11, 2006
    Applicant: Engana Pty Ltd
    Inventors: Steven Frisken, Glenn Baxter, Hao Zhou, Dmitri Abakoumov
  • Publication number: 20060067611
    Abstract: An optical coupling device including: at least a first input port for delivering an optical input signal beam that includes a plurality of wavelength channels; at least a first optical output port for receiving an optical output signal beam; a wavelength dispersion element for spatially separating the plurality of wavelength channels in the optical input signal beam to form a plurality of spatially separated wavelength channel beams; an optical coupling device for independently modifying the phase of each of the spatially separated wavelength channel beams such that, for at least one wavelength channel beam, a selected fraction of the light is coupled to the first output port and a fraction of the light is coupled away from the first output port.
    Type: Application
    Filed: September 27, 2004
    Publication date: March 30, 2006
    Applicant: Engana Pty Ltd
    Inventors: Steven Frisken, Glenn Baxter, Hao Zhou, Dmitri Abakoumov
  • Patent number: 6901175
    Abstract: A device for filtering at least a predetermined selected optical signal having a predetermined wavelength range from a series of optical signals, the device comprising: a polarisation alignment means for substantially aligning substantially orthogonal polarisation states of an optical input signal so as to produce a polarisation aligned optical signal; a polarisation manipulation means for imparting a controlled polarisation manipulation to the polarisation aligned optical signal so as to output a polarisation manipulated optical signal having one of at least two distinguishable polarisation states including a first polarisation state and a second polarisation state; and an optical separation means for spatially separating the selected optical signal from the series of optical signals when the polarisation state of the polarisation manipulated optical signal is in a first polarisation state, thereby forming a first and second output optical signal, and maintaining the spatial alignment of the selected optical
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: May 31, 2005
    Assignee: Engana Ltd.
    Inventors: Glenn W. Baxter, Dmitri Abakoumov, Steven Frisken
  • Publication number: 20030210727
    Abstract: A method of filtering an input optical signal, the method including the step of: (a) utilising the phase response of a Gires-Tournois resonator to produce a corresponding spatial separation in a predetermined wavelength range of the input optical signal. The method further preferably can include the step of: (b) projecting substantially orthogonal beams onto the surface of a Gires-Tournois resonator at slightly different angles of incidence and utilising the phase difference in the phase response of the orthogonal beams to spatially separate the predetermined wavelength range. A birefringent wedge can be utilised to separate a polarised input beam into the substantially orthogonal beams for projection onto the surface of the Gires-Tournois resonator.
    Type: Application
    Filed: May 7, 2002
    Publication date: November 13, 2003
    Applicant: Engana Pty Ltd.
    Inventors: Steven James Frisken, Dmitri Abakoumov, Glenn Wayne Baxter
  • Publication number: 20030161567
    Abstract: A device for filtering at least a predetermined selected optical signal having a predetermined wavelength range from a series of optical signals, the device comprising: a polarisation alignment means for substantially aligning substantially orthogonal polarisation states of an optical input signal so as to produce a polarisation aligned optical signal; a polarisation manipulation means for imparting a controlled polarisation manipulation to the polarisation aligned optical signal so as to output a polarisation manipulated optical signal having one of at least two distinguishable polarisation states including a first polarisation state and a second polarisation state; and an optical separation means for spatially separating the selected optical signal from the series of optical signals when the polarisation state of the polarisation manipulated optical signal is in a first polarisation state, thereby forming a first and second output optical signal, and maintaining the spatial alignment of the selected optical
    Type: Application
    Filed: February 28, 2002
    Publication date: August 28, 2003
    Inventors: Glenn W. Baxter, Dmitri Abakoumov, Steven Frisken