Patents by Inventor Inuk Kang

Inuk Kang 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: 11588554
    Abstract: A free-space optical communication method is provided. The method includes generating, at a transmitter of a satellite, an optical frequency comb and a pump signal, modulating the optical frequency comb to generate a data signal and an idler signal that is a phase conjugate of the data signal, attenuating the pump signal, transmitting over free-space, from the satellite, a communication signal having the data signal, the idler signal and the pump signal, receiving from the satellite, at a receiver, the transmitted communication signal having the data signal, the idler signal, and the attenuated pump signal, amplifying, at a phase-sensitive amplifier, the data signal and the idler signal, and demodulating the data signal and the idler signal to extract data.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: February 21, 2023
    Inventors: Jane Deborah LeGrange, Inuk Kang
  • Publication number: 20210349017
    Abstract: This application is generally related to methods, apparatuses and systems for rapid, sensitive detection of biological agents. One aspect is directed to a system including an infrared optical source configured to output an optical beam at a pulse repetition rate greater than or equal to 1 MHz. The system also includes a medium configured to receive the optical beam in first and second locations of the medium, where each of the first and second locations is separated by a barrier, the first location includes a solvent, and the second location includes a biological agent in the solvent. The system also includes a detector configured to receive the outputted optical beam from the medium and detect infrared spectra therefrom.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 11, 2021
    Inventors: Mihaela DINU, Darren Duane HUDSON, Inuk KANG
  • Publication number: 20210281322
    Abstract: A free-space optical communication method is provided. The method includes generating, at a transmitter of a satellite, an optical frequency comb and a pump signal, modulating the optical frequency comb to generate a data signal and an idler signal that is a phase conjugate of the data signal, attenuating the pump signal, transmitting over free-space, from the satellite, a communication signal having the data signal, the idler signal and the pump signal, receiving from the satellite, at a receiver, the transmitted communication signal having the data signal, the idler signal, and the attenuated pump signal, amplifying, at a phase-sensitive amplifier, the data signal and the idler signal, and demodulating the data signal and the idler signal to extract data.
    Type: Application
    Filed: May 10, 2021
    Publication date: September 9, 2021
    Inventors: Jane Deborah LEGRANGE, Inuk KANG
  • Patent number: 11038593
    Abstract: A free-space optical communication method is provided. An example method may include generating an optical frequency comb comprising a first tone and a second tone different from the first tone. The method may include modulating, by a first modulator of a first device, the first tone to generate a first signal comprising data. The method may include modulating, by a second modulator of the first device, the second tone to generate a second signal that is a phase conjugate of the first signal. The method may include transmitting, via free-space and to a second device, a communication signal having the first signal and the second signal.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: June 15, 2021
    Inventors: Jane Deborah LeGrange, Inuk Kang
  • Patent number: 11022440
    Abstract: A waveguide optical gyroscope (WOG) is disclosed, which may include: an emitter; an integrated interferometer disposed on a silica planar lightwave circuit (PLC) and comprising a multilayer waveguide loop disposed in a first cladding material and interposed between layers of at least a second cladding material having an index of refraction lower than an index of refraction of the first cladding material; a pump source configured to pump the first cladding material with a signal that compensates for a propagation loss in the multilayer waveguide loop; and a micro-optic component configured to receive an output of the emitter and to guide the output into the integrated interferometer.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: June 1, 2021
    Inventor: Inuk Kang
  • Publication number: 20200252130
    Abstract: A free-space optical communication method is provided. An example method may include generating an optical frequency comb comprising a first tone and a second tone different from the first tone. The method may include modulating, by a first modulator of a first device, the first tone to generate a first signal comprising data. The method may include modulating, by a second modulator of the first device, the second tone to generate a second signal that is a phase conjugate of the first signal. The method may include transmitting, via free-space and to a second device, a communication signal having the first signal and the second signal.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Inventors: Jane Deborah LeGrange, Inuk Kang
  • Patent number: 10714886
    Abstract: Ring resonators and methods of making and using the same are disclosed. In certain embodiments, a ring resonator may include a waveguide comprising a pump bus and a signal bus disposed adjacent a ring guide, the pump bus and signal bus configured to couple electromagnetic signals to and from ring guide, wherein at least a portion of the waveguide comprises erbium-doped silica and a cladding material disposed adjacent the waveguide, wherein the cladding material exhibits an index of refraction that is lower than an index of refraction of the waveguide.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: July 14, 2020
    Inventor: Inuk Kang
  • Patent number: 10673530
    Abstract: A free-space optical communication method is provided. The method includes generating, at a transmitter of a satellite, an optical frequency comb and a pump signal, modulating the optical frequency comb to generate a data signal and an idler signal that is a phase conjugate of the data signal, attenuating the pump signal, transmitting over free-space, from the satellite, a communication signal having the data signal, the idler signal and the pump signal, receiving from the satellite, at a receiver, the transmitted communication signal having the data signal, the idler signal, and the attenuated pump signal, amplifying, at a phase-sensitive amplifier, the data signal and the idler signal, and demodulating the data signal and the idler signal to extract data.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: June 2, 2020
    Inventors: Jane Deborah LeGrange, Inuk Kang
  • Patent number: 10666009
    Abstract: The present application is directed to a waveguide amplifier. The waveguide amplifier has a substrate including an upper surface and a lower surface. The waveguide amplifier also has a core made of silicon or silicon nitride formed on an upper surface of the substrate. The core includes a channel configured to transmit light there through. The waveguide amplifier also includes an upper cladding layer formed above the core. The upper cladding layer includes a glass doped with rare earth material. The application is also directed to a method of amplifying a signal.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: May 26, 2020
    Inventor: Inuk Kang
  • Patent number: 10563986
    Abstract: A waveguide optical gyroscope (WOG) is disclosed. One WOG may comprise an amplified spontaneous emission (ASE) source, a sensor comprising a waveguide loop disposed in a first cladding material interposed between layers of at least a second cladding material having an index of refraction lower than an index of refraction of the first cladding material, wherein the sensor is configured to receive an output signal of the ASE source, and a pump source configured to pump the first cladding material with an in-plane pump signal.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: February 18, 2020
    Assignee: LGS Innovations LLC
    Inventor: Inuk Kang
  • Publication number: 20200003561
    Abstract: A waveguide optical gyroscope (WOG) is disclosed, which may include: an emitter; an integrated interferometer disposed on a silica planar lightwave circuit (PLC) and comprising a multilayer waveguide loop disposed in a first cladding material and interposed between layers of at least a second cladding material having an index of refraction lower than an index of refraction of the first cladding material; a pump source configured to pump the first cladding material with a signal that compensates for a propagation loss in the multilayer waveguide loop; and a micro-optic component configured to receive an output of the emitter and to guide the output into the integrated interferometer.
    Type: Application
    Filed: September 6, 2019
    Publication date: January 2, 2020
    Inventor: Inuk Kang
  • Publication number: 20180364044
    Abstract: A waveguide optical gyroscope (WOG) is disclosed. One WOG may comprise an amplified spontaneous emission (ASE) source, a sensor comprising a waveguide loop disposed in a first cladding material interposed between layers of at least a second cladding material having an index of refraction lower than an index of refraction of the first cladding material, wherein the sensor is configured to receive an output signal of the ASE source, and a pump source configured to pump the first cladding material with an in-plane pump signal.
    Type: Application
    Filed: January 17, 2017
    Publication date: December 20, 2018
    Inventor: Inuk Kang
  • Publication number: 20180183202
    Abstract: Ring resonators and methods of making and using the same are disclosed. In certain embodiments, a ring resonator may include a waveguide comprising a pump bus and a signal bus disposed adjacent a ring guide, the pump bus and signal bus configured to couple electromagnetic signals to and from ring guide, wherein at least a portion of the waveguide comprises erbium-doped silica and a cladding material disposed adjacent the waveguide, wherein the cladding material exhibits an index of refraction that is lower than an index of refraction of the waveguide.
    Type: Application
    Filed: February 15, 2018
    Publication date: June 28, 2018
    Inventor: Inuk Kang
  • Patent number: 9958708
    Abstract: The present application is directed to a method of short pulse generation. The method includes the step of creating, via electrical circuitry in a master oscillator, a square wave pulse with a predetermined pulse repetition rate. The method includes the step of retiming the square pulse with a clock. The method includes the step of recovering an electrical signal from the retimed square pulse. Further, the method includes the step of sending the recovered electrical signal to a modulator for modulating an optical signal.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: May 1, 2018
    Assignee: LGS INNOVATIONS LLC
    Inventor: Inuk Kang
  • Patent number: 9948056
    Abstract: Ring resonators and methods of making and using the same are disclosed. In certain embodiments, a ring resonator may include a waveguide comprising a pump bus and a signal bus disposed adjacent a ring guide, the pump bus and signal bus configured to couple electromagnetic signals to and from ring guide, wherein at least a portion of the waveguide comprises erbium-doped silica and a cladding material disposed adjacent the waveguide, wherein the cladding material exhibits an index of refraction that is lower than an index of refraction of the waveguide, wherein the ring resonator exhibits a propagation loss of less than 2 dB/m.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: April 17, 2018
    Assignee: LGS INNOVATIONS LLC
    Inventor: Inuk Kang
  • Publication number: 20180097567
    Abstract: A free-space optical communication method is provided. The method includes generating, at a transmitter of a satellite, an optical frequency comb and a pump signal, modulating the optical frequency comb to generate a data signal and an idler signal that is a phase conjugate of the data signal, attenuating the pump signal, transmitting over free-space, from the satellite, a communication signal having the data signal, the idler signal and the pump signal, receiving from the satellite, at a receiver, the transmitted communication signal having the data signal, the idler signal, and the attenuated pump signal, amplifying, at a phase-sensitive amplifier, the data signal and the idler signal, and demodulating the data signal and the idler signal to extract data.
    Type: Application
    Filed: December 23, 2016
    Publication date: April 5, 2018
    Inventors: Jane Deborah LeGrange, Inuk Kang
  • Publication number: 20180083411
    Abstract: The present application is directed to a waveguide amplifier. The waveguide amplifier has a substrate including an upper surface and a lower surface. The waveguide amplifier also has a core made of silicon or silicon nitride formed on an upper surface of the substrate. The core includes a channel configured to transmit light there through. The waveguide amplifier also includes an upper cladding layer formed above the core. The upper cladding layer includes a glass doped with rare earth material. The application is also directed to a method of amplifying a signal.
    Type: Application
    Filed: June 21, 2017
    Publication date: March 22, 2018
    Inventor: INUK KANG
  • Publication number: 20180083410
    Abstract: Ring resonators and methods of making and using the same are disclosed. In certain embodiments, a ring resonator may include a waveguide comprising a pump bus and a signal bus disposed adjacent a ring guide, the pump bus and signal bus configured to couple electromagnetic signals to and from ring guide, wherein at least a portion of the waveguide comprises erbium-doped silica and a cladding material disposed adjacent the waveguide, wherein the cladding material exhibits an index of refraction that is lower than an index of refraction of the waveguide, wherein the ring resonator exhibits a propagation loss of less than 2 dB/m.
    Type: Application
    Filed: January 17, 2017
    Publication date: March 22, 2018
    Inventor: Inuk Kang
  • Patent number: 9742144
    Abstract: The present application is directed to a planar waveguide amplifier. The planar waveguide amplifier includes a substrate having an upper surface and a lower surface. The planar waveguide amplifier includes a core formed on an upper surface of the substrate. The core includes a channel configured to transmit light there through. The planar waveguide amplifier also includes an upper cladding layer formed above the core. The upper cladding layer includes a glass doped with rare earth material in an amount less than about 5% of the upper cladding layer. The application is also directed to a method of amplifying a signal.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: August 22, 2017
    Assignee: LGS INNOVATIONS LLC
    Inventor: Inuk Kang
  • Patent number: 8457500
    Abstract: An all-optical modulation format converter for converting optical data signals modulated in an on-off-keying (OOK) format to a phase-shift-keying (PSK) format. The OOK-to-PSK converter can be coupled to a delay-line interferometer to provide an all-optical wavelength converter for differential PSK (DPSK). The OOK-to-PSK converter can also be used in all-optical implementations of various functions, including, for example, exclusive-OR (XOR/NXOR) and OR logic, shift registers, and pseudo-random binary sequence (PRBS) generators. Several variants of all-optical devices are described.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: June 4, 2013
    Assignee: Alcatel Lucent
    Inventor: Inuk Kang