Patents by Inventor Masud Azimi

Masud Azimi 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).

  • Publication number: 20080170223
    Abstract: A spectrometer comprising a collimating element for receiving input light and collimating the same, a dispersive optical element for receiving light from the collimating element and dispersing the same and a focusing element for receiving light from the dispersive optical element and focusing the same on a detector assembly wherein, where the wavelength dispersion of the dispersed light extends in the x-y direction, the collimating element and the focusing element are formed so as to maintain the desired optical parameters in the x-y plane while having a reduced size in the z direction.
    Type: Application
    Filed: October 29, 2007
    Publication date: July 17, 2008
    Inventors: Daryoosh Vakhshoori, Peili Chen, Peidong Wang, Masud Azimi
  • Publication number: 20080024777
    Abstract: Disclosed herein are Raman probes that include: (a) a first optical fiber for receiving laser excitation light from a light source and transmitting the same; (b) a first filter for receiving light from the first optical fiber and adapted to pass the laser excitation light and to block spurious signals associated with the light; (c) a second filter for receiving light from the first filter and adapted to direct the light toward a specimen; and (d) focusing apparatus for receiving the light from the second filter, focusing the light on the specimen so as to generate the Raman signal, and returning the Raman signal to the second filter. The second filter is further configured so that when the second filter receives the Raman signal from the focusing apparatus, the second filter filters out unwanted laser excitation light before directing the Raman signal to a second optical fiber.
    Type: Application
    Filed: June 20, 2007
    Publication date: January 31, 2008
    Inventors: Peidong Wang, Daryoosh Vakhshoori, Yu Shen, Kevin Knopp, Masud Azimi
  • Patent number: 7302136
    Abstract: An assembly is disclosed for optical components, the assembly comprising: a platform for receiving and supporting a plurality of carrier components having optical components mounted thereon; carrier component receiving stations formed on the platform, each of the stations being adapted to receive and retain one of the carrier components; a first one of the carrier components having a light beam outlet; and a second one of the carrier components having a light beam receiving port, wherein the optical component receiving stations are disposed to position the first one of the components and second one of the components relative to one another such that the light beam outlet and the light beam receiving port are in alignment with one another.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: November 27, 2007
    Assignee: Ahura Corporation
    Inventors: Daryoosh Vakhshoori, Masud Azimi, Gregory Vander Rhodes
  • Patent number: 7289208
    Abstract: A spectrometer comprising a collimating element for receiving input light and collimating the same, a dispersive optical element for receiving light from the collimating element and dispersing the same and a focusing element for receiving light from the dispersive optical element and focusing the same on a detector assembly wherein, where the wavelength dispersion of the dispersed light extends in the x-y direction, the collimating element and the focusing element are formed so as to maintain the desired optical parameters in the x-y plane while having a reduced size in the z direction.
    Type: Grant
    Filed: April 30, 2005
    Date of Patent: October 30, 2007
    Assignee: Ahura Corporation
    Inventors: Daryoosh Vakhshoori, Peili Chen, Peidong Wang, Masud Azimi
  • Publication number: 20070116069
    Abstract: A laser package comprising a semiconductor laser having an operating temperature range and a heater, wherein the heater is configured to heat the laser when the laser package is positioned in an environment having an ambient temperature which lies outside of the operating temperature range of the laser, so that the laser will remain within the operating temperature range.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 24, 2007
    Inventors: Peidong Wang, Daryoosh Vakhshoori, Masud Azimi, Kevin Knopp
  • Patent number: 7215836
    Abstract: The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power broadband source of amplified spontaneous emission (ASE) as the Raman pump source for improved system performance. The invention also includes methods for constructing such a high-power broadband Raman pump.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: May 8, 2007
    Assignee: Ahura Corporation
    Inventors: Daryoosh Vakhshoori, Masud Azimi, Min Jiang, Kevin J. Knopp, Peidong Wang
  • Publication number: 20070091412
    Abstract: An optical isolator for transmitting light in a first direction along an optical pathway and blocking light in a second direction along an optical pathway. The optical isolator includes an input polarizer having a pass axis at a first angle, an output polarizer having a pass axis at a second angle, a Faraday rotator material between the polarizers having a Verdet constant and an axis of maximum length therethrough, generation means for generating a magnetic field around and inside the rotator material, and at least one reflector configured to define an optical length through the rotator material which is longer than the axis therethrough. The optical pathway length through the rotator material, the magnetic field strength, and the Verdet constant are selected so as to rotate light through the Faraday rotator material from the first angle to the second angle.
    Type: Application
    Filed: June 2, 2006
    Publication date: April 26, 2007
    Inventors: Masud Azimi, Daryoosh Vakhshoori, Kevin Knopp, Gregory Rhodes, Peidong Wang
  • Publication number: 20070058243
    Abstract: An optical bandwidth source for generating amplified spontaneous emission (ASE) across a selected wavelength range, the optical bandwidth source including a waveguide having a first end and a second end, and comprising a plurality of separate wavelength gain subsections arranged in a serial configuration between the first end and the second end so as to collectively form an active waveguide between the first end and the second end; wherein each of the wavelength gain subsections is configured to produce ASE across a wavelength range which is less than, but contained within, the selected wavelength range, whereby the plurality of separate wavelength gain subsections collectively produce ASE across the selected wavelength range.
    Type: Application
    Filed: April 19, 2006
    Publication date: March 15, 2007
    Inventors: Daryoosh Vakhshoori, Kevin Knopp, Peidong Wang, Masud Azimi
  • Patent number: 7180653
    Abstract: A laser source for generating amplified and filtered optical output, comprising a VCSEL, a power optical amplifier, and a filter. A laser source for generating amplified and filtered optical output, comprising a first mirror and a second mirror forming a cavity, an optical amplifier disposed in the cavity, and filter means for filtering ASE generated and amplified by the optical amplifier. A system for generating amplified and filtered optical output, comprising an optical platform having electrical connections and a fiber optic connection, a VCSEL configured to generate seed light, an optical amplifier configured to receive and amplify seed light to generate power boosted ASE and a filter configured to reduce background noise from the power boosted ASE. A method of generating optical output having high optical power with high spectral fidelity, comprising generating seed light, amplifying seed light, and filtering the amplified optical output to reduce background noise.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: February 20, 2007
    Assignee: Ahura Corporation
    Inventors: Kevin J. Knopp, Daryoosh Vakhshoori, Masud Azimi, Peidong Wang
  • Publication number: 20070014520
    Abstract: Apparatus is disclosed for precision alignment and assembly of opto-electronic components relative to one another, the apparatus comprising a selected optical component having a periphery forming at least one flat surface; a holding block having at least one attachment region corresponding to the at least one flat surface of the selected optical component; a positioning mechanism having a first portion and a second portion, the first portion configured to position the selected optical component relative to another opto-electronic component, and the second portion configured to position the holding block relative to the selected optical component and in contact with a platform in attachment with the another opto-electronic component; and an attachment component disposed between the selected optical component and the holding block, and the attachment component disposed between the holding block and the platform so as to fix the selected optical component in position relative to the another opto-electronic compo
    Type: Application
    Filed: June 13, 2006
    Publication date: January 18, 2007
    Inventors: Masud Azimi, Andrew Vote, Daryoosh Vakhshoori
  • Publication number: 20070002319
    Abstract: A Raman probe assembly for analyzing a specimen, comprising: a light source for generating laser excitation light; a camera for capturing an image; a light analyzer for analyzing a Raman signature; and a light path for (i) delivering the laser excitation light from the light source to the specimen so as to produce the Raman signature for the specimen, (ii) capturing an image of the specimen and directing that image to the camera, and (iii) directing the Raman signature of the specimen to the light analyzer.
    Type: Application
    Filed: June 27, 2006
    Publication date: January 4, 2007
    Inventors: Kevin Knopp, Peidong Wang, Masud Azimi, Daryoosh Vakhshoori
  • Publication number: 20060170917
    Abstract: A compact, lightweight, portable optical assembly comprising: a platform; and a plurality of optical elements mounted to the platform; wherein the plurality of optical elements are optically connected to one another with free-space couplings so as to form an optical circuit; and further wherein the platform is sufficiently mechanically robust so as to maintain the free-space optical coupling between the various optical elements. A method for making a compact, lightweight, portable optical assembly, comprising: providing a platform; and mounting a plurality of optical elements to the platform; wherein the plurality of optical elements are mounted to the platform so that they are optically connected to one another with free-space couplings so as to form an optical circuit; and further wherein the platform is sufficiently mechanically robust so as to maintain the free-space optical coupling between the various optical elements.
    Type: Application
    Filed: August 30, 2005
    Publication date: August 3, 2006
    Inventors: Daryoosh Vakhshoori, Peili Chen, Masud Azimi, Peidong Wang, Yu Shen, Kevin Knopp, Leyun Zhu, Christopher Brown, Gregory Vander Rhodes
  • Patent number: 7068905
    Abstract: An optical bandwidth source for generating amplified spontaneous emission (ASE) across a selected wavelength range, the optical bandwidth source including a waveguide having a first end and a second end, and comprising a plurality of separate wavelength gain subsections arranged in a serial configuration between the first end and the second end so as to collectively form an active waveguide between the first end and the second end; wherein each of the wavelength gain subsections is configured to produce ASE across a wavelength range which is less than, but contained within, the selected wavelength range, whereby the plurality of separate wavelength gain subsections collectively produce ASE across the selected wavelength range.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: June 27, 2006
    Inventors: Daryoosh Vakhshoori, Kevin J. Knopp, Peidong Wang, Masud Azimi
  • Patent number: 7062133
    Abstract: Apparatus is disclosed for precision alignment and assembly of opto-electronic components relative to one another, the apparatus comprising a selected optical component having a periphery forming at least one flat surface; a holding block having at least one attachment region corresponding to the at least one flat surface of the selected optical component; a positioning mechanism having a first portion and a second portion, the first portion configured to position the selected optical component relative to another opto-electronic component, and the second portion configured to position the holding block relative to the selected optical component and in contact with a platform in attachment with the another opto-electronic component; and an attachment component disposed between the selected optical component and the holding block, and the attachment component disposed between the holding block and the platform so as to fix the selected optical component in position relative to the another opto-electronic compo
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: June 13, 2006
    Assignee: Ahura Corporation
    Inventors: Masud Azimi, Andrew Vote, Daryoosh Vakhshoori
  • Patent number: 7057791
    Abstract: An optical isolator is disclosed for transmitting light in a first direction and blocking light in a second direction along an optical pathway. The optical isolator includes an input polarizer having a pass axis at first angle, an output polarizer having a pass axis at second angle, a Faraday rotator material between the polarizers having a Verdet constant and an axis of maximum length therethrough, generation means for generating a magnetic field around and inside the rotator material, and at least one reflector configured to define an optical length through the rotator material which is longer than the axis therethrough. The optical pathway length through the rotator material, the magnetic field strength, and the Verdet constant are selected so as to rotate light through the Faraday rotator material from the first angle to the second angle.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: June 6, 2006
    Assignee: Ahura Corporation
    Inventors: Masud Azimi, Daryoosh Vakhshoori, Kevin J. Knopp, Gregory Vander Rhodes, Peidong Wang
  • Publication number: 20060088069
    Abstract: The current invention relates to several different ways to realize “uncooled lasers” (i.e., a laser source without a temperature stabilization element, such as a thermal electric cooler) which have a sufficiently stable, narrow-linewidth source as to be useful as a Raman pump source in portable instruments and systems. These include desensitizing the laser wavelength against mechanical deformations and distortions caused by the temperature changes around the laser source. In addition, the present invention also discloses improved techniques for reducing the profile of the uncooled, wavelength stabilized laser, so as to facilitate its use in portable applications, including hand-held Raman analyzers.
    Type: Application
    Filed: August 30, 2005
    Publication date: April 27, 2006
    Inventors: Daryoosh Vakhshoori, Peidong Wang, Masud Azimi
  • Publication number: 20060045151
    Abstract: An external cavity wavelength stabilized laser system including a platform, a laser mounted to the platform with a laser mount, a diffractor mounted to the platform with a diffractor mount, and a lens mounted to the platform with a lens mount between the laser and the diffractor so as to transmit light therebetween wherein the wavelength of the laser is determined by (i) the angle of incidence of the light on the diffractor and (ii) the diffraction characteristics of the diffractor and wherein the system components are selected so that (i) a change in the angle of incidence of the light on the diffractor due to a change in the temperature of the system components substantially offsets (ii) a change in the diffraction characteristics of the diffractor.
    Type: Application
    Filed: April 29, 2005
    Publication date: March 2, 2006
    Inventors: Daryoosh Vakhshoori, Peidong Wang, Masud Azimi
  • Publication number: 20060044557
    Abstract: A spectrometer comprising a collimating element for receiving input light and collimating the same, a dispersive optical element for receiving light from the collimating element and dispersing the same and a focusing element for receiving light from the dispersive optical element and focusing the same on a detector assembly wherein, where the wavelength dispersion of the dispersed light extends in the x-y direction, the collimating element and the focusing element are formed so as to maintain the desired optical parameters in the x-y plane while having a reduced size in the z direction.
    Type: Application
    Filed: April 30, 2005
    Publication date: March 2, 2006
    Inventors: Daryoosh Vakhshoori, Peili Chen, Peidong Wang, Masud Azimi
  • Publication number: 20050265647
    Abstract: The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power broadband source of amplified spontaneous emission (ASE) as the Raman pump source for improved system performance. The invention also includes methods for constructing such a high-power broadband Raman pump.
    Type: Application
    Filed: August 1, 2003
    Publication date: December 1, 2005
    Inventors: Daryoosh Vakhshoori, Masud Azimi, Min Jiang, Kevin Knopp, Peidong Wang
  • Publication number: 20050248759
    Abstract: In another form of the present invention, there is provided a Raman probe comprising: a first optical fiber for receiving laser excitation light from a light source and transmitting the same; a first filter for receiving light from the first optical fiber and adapted to pass the laser excitation light and to block spurious signals associated with the light; a second filter for receiving light from the first filter and adapted to direct the light toward the specimen; focusing apparatus for receiving the light from the second filter, focusing the light on a specimen so as to generate the Raman signal, and returning the Raman signal to the second filter; wherein the second filter is further configured so that when the second filter receives the Raman signal from the focusing apparatus, the second filter filters out unwanted laser excitation light before directing the Raman signal to a second optical fiber; and a second optical fiber for receiving the Raman signal from the second filter and transmitting the same
    Type: Application
    Filed: April 29, 2005
    Publication date: November 10, 2005
    Inventors: Peidong Wang, Daryoosh Vakhshoori, Yu Shen, Kevin Knopp, Masud Azimi