Patents by Inventor Sanggeon Lee

Sanggeon Lee 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 FIBER ATTACHMENT DEVICE
    Publication number: 20230054682
    Abstract: An optical fiber mold device has a first portion that includes a base layer having a longitudinal feature configured to receive an optical fiber. At least one second portion is disposed over the base layer. The second portion has a center wall and front and back end walls. The center wall, the front end wall, and the back end wall form a mold cavity. At least one first hole is disposed in the mold cavity and is configured to allow mold material to enter the mold cavity. At least one second hole in the mold cavity is configured to allow air displaced by the mold material to exit the mold cavity.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 23, 2023
    Inventors: Sanggeon Lee, Peter Kiesel, Qiushu Chen, Jacob N. Chamoun
  • Reconfigurable optical recognition of bit information in a digital data stream with different bit rates
    Patent number: 6751416
    Abstract: Techniques and devices for providing reconfigurable and variable-bit-rate optical header recognition for an optical switch.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: June 15, 2004
    Assignee: University of Southern California
    Inventors: Mustafa C. Cardakli, Deniz Gurkan, Sanggeon Lee, Alan E. Willner
  • Compensation and control of both first-order and higher-order polarization-mode dispersion
    Patent number: 6654103
    Abstract: Techniques and devices for controlling or compensating for both the first-order and high-order PMD effects in an optical signal by processing the signal in a fixed DGD stage and a variable DGD stage in sequence.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: November 25, 2003
    Assignee: University of Southern California
    Inventors: Qian Yu, Lianshan Yan, Sanggeon Lee, Alan E. Willner
  • Optical detection of a fiber span with high polarization-mode dispersion in a fiber system
    Patent number: 6459479
    Abstract: Techniques for monitoring polarization-mode dispersion in a fiber span and location such fiber span in a fiber system based on the stimulated Brillouin scattering process.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: October 1, 2002
    Assignee: University of Southern California
    Inventors: Sanggeon Lee, Alan E. Willner
  • Tunable optical dispersion-slope compensation based on a nonlinearly-chirped bragg grating
    Patent number: 6453093
    Abstract: Techniques for using a nonlinearly-chirped fiber Bragg grating to produce tunable dispersion-slope compensation.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: September 17, 2002
    Assignee: Univerisity of Southern California
    Inventors: Yong Xie, Sanggeon Lee, Zhongqi Pan, Alan E. Willner
  • OPTICAL DETECTION OF A FIBER SPAN WITH HIGH POLARIZATION-MODE DISPERSION IN A FIBER SYSTEM
    Publication number: 20020122169
    Abstract: Techniques for monitoring polarization-mode dispersion in a fiber span and location such fiber span in a fiber system based on the stimulated Brillouin scattering process.
    Type: Application
    Filed: December 1, 2000
    Publication date: September 5, 2002
    Inventors: Sanggeon Lee, Alan E. Willner
  • Tunable compensation for polarization-mode dispersion using a birefringent nonlinearly-chirped bragg grating in a dual-pass configuration
    Patent number: 6400869
    Abstract: Techniques and devices for compensating polarization-mode dispersion in an optical signal by using a nonlinearly-chirped Bragg grating in a dual-pass configuration.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: June 4, 2002
    Assignee: University of Southern California
    Inventors: Zhongqi Pan, Yong Xie, Sanggeon Lee, Alan E. Willner
  • Tunable compensation for polarization-mode dispersion using a birefringent nonlinearly-chirped bragg grating in a dual-pass configuration
    Publication number: 20020015549
    Abstract: Techniques and devices for compensating polarization-mode dispersion in an optical signal by using a nonlinearly-chirped Bragg grating in a dual-pass configuration.
    Type: Application
    Filed: December 1, 2000
    Publication date: February 7, 2002
    Inventors: Zhongqi Pan, Yong Xie, Sanggeon Lee, Alan E. Willner
  • Disperson compensation by using tunable nonlinearly-chirped gratings
    Patent number: 6330383
    Abstract: A nonlinearly chirped fiber grating for achieving tunable dispersion compensation, dispersion slope compensation, polarization mode dispersion, chirp reduction in directly modulated diode lasers, and optical pulse manipulation. A dynamical dispersion compensation mechanism can be implemented in a fiber communication system based on such a nonlinearly chirped fiber grating.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: December 11, 2001
    Assignee: University of Southern California
    Inventors: Jin-Xing Cai, Kai-Ming Feng, Alan E. Willner, Jiangde Peng, Sanggeon Lee, Reza Khosravani
  • Tunable optical dispersion-slope compensation based on a nonlinearly-chirped bragg grating
    Publication number: 20010048788
    Abstract: Techniques for using a nonlinearly-chirped fiber Bragg grating to produce tunable dispersion-slope compensation.
    Type: Application
    Filed: January 8, 2001
    Publication date: December 6, 2001
    Inventors: Yong Xie, Sanggeon Lee, Zhongqi Pan, Alan E. Willner
  • Reconfigurable optical recognition of bit information in a digital data stream with different bit rates
    Publication number: 20010040712
    Abstract: Techniques and devices for providing reconfigurable and variable-bit-rate optical header recognition for an optical switch.
    Type: Application
    Filed: February 5, 2001
    Publication date: November 15, 2001
    Inventors: Mustafa C. Cardakli, Deniz Gurkan, Sanggeon Lee, Alan E. Willner
  • Tuning of optical dispersion by using a tunable fiber bragg grating
    Publication number: 20010021294
    Abstract: Techniques and devices based on a wave-guiding element which has a spatial grating pattern that is an oscillatory variation along its optic axis. The wave-guiding element is configured to receive an input optical signal and to produce an output optical signal by reflection within a Bragg reflection band produced by the spatial grating pattern so as to produce time delays of different reflected spectral components as a nonlinear function of spatial positions along said optic axis at which the different reflected spectral components are respectively reflected. Such a wave-guiding element may be a nonlinearly chirped fiber grating A control unit may be engaged to the wave-guiding element and is operable to change a property of the spatial grating pattern along the optic axis to tune at least relative time delays of the different reflected spectral components nonlinearly with respect to wavelength.
    Type: Application
    Filed: April 6, 2001
    Publication date: September 13, 2001
    Applicant: University of Southern California, non-profit organization
    Inventors: Jinxing Cai, Sanggeon Lee, Kai-Ming Feng, Alan E. Willner, Jiangde Peng, Reza Khosravani