Patents by Inventor Linran Fan

Linran Fan 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: 12313492
    Abstract: A low-cost, data-fitting-free robust methodology configured to distinguish the coupling condition of an arbitrary resonance, applicable in one example to a micro-resonator of a multi-micro-resonator optical integrated circuit. The method includes registering the resonator cavity response to a rapid-phase shift of the on-resonance pump field. From the registered feature of the time-dependent transmission characteristic acquired with an optical detector, the sign of a difference between the values of intrinsic loss of the cavity and the coupling rate (?i??c) is directly read out, thereby resulting not only in a more accurate estimation of the intrinsic loss as compared with related art, but also in facilitating practically-realizable inspection of massively integrated photonic platforms with micro-resonators.
    Type: Grant
    Filed: March 8, 2024
    Date of Patent: May 27, 2025
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Chaohan Cui, Linran Fan
  • Publication number: 20240369906
    Abstract: The adaptive methodology of (purposefully, intentionally aperiodically) poling of an optical waveguide made in a nonlinear material substrate to achieve a continuous increase of overall nonlinear conversion efficiency with increase in the length of such waveguide. As a result of such poling, the variation of at least a waveguide thickness is compensated by adjusting the poling period along the waveguide to match the local momentum difference of the nonlinear process. For a second-harmonic generation, a near-ideal performance of the nonlinear energy conversion process was demonstrated even for a 21 mm long waveguide (with the SHG efficiency as high as 9415%/W and a 82.6% absolute power conversion efficiency). The adaptive poling methodology can also be applied to compensate other systematic inhomogeneity of a WG device in, for example, etching depth, diffusion depth, dose of lithographic exposure of the nonlinear material, and doping density across the nonlinear material substrate.
    Type: Application
    Filed: July 19, 2024
    Publication date: November 7, 2024
    Inventors: Linran FAN, Pao-Kang CHEN
  • Publication number: 20240302246
    Abstract: A low-cost, data-fitting-free robust methodology configured to distinguish the coupling condition of an arbitrary resonance, applicable in one example to a micro-resonator of a multi-micro-resonator optical integrated circuit. The method includes registering the resonator cavity response to a rapid-phase shift of the on-resonance pump field. From the registered feature of the time-dependent transmission characteristic acquired with an optical detector, the sign of a difference between the values of intrinsic loss of the cavity and the coupling rate (?i??c) is directly read out, thereby resulting not only in a more accurate estimation of the intrinsic loss as compared with related art, but also in facilitating practically-realizable inspection of massively integrated photonic platforms with micro-resonators.
    Type: Application
    Filed: March 8, 2024
    Publication date: September 12, 2024
    Inventors: Chaohan Cui, Linran Fan
  • Publication number: 20230351167
    Abstract: The present disclosure is directed to systems and methods of implementing a frequency multiplexed photonic neural network. Each input node forming an input layer receives input data that includes a plurality of multiplexed frequencies. The multiplexed frequencies are introduced to a weight matrix that includes a plurality of layers, each having a plurality of nodes that may perform the same operation at each frequency or may perform different operations at each frequency. An output layer receives, at each of a plurality of nodes, a frequency multiplexed output signal.
    Type: Application
    Filed: September 15, 2021
    Publication date: November 2, 2023
    Inventors: LINRAN FAN, QUNTAO ZHUANG
  • Publication number: 20210298616
    Abstract: A pulse waveform measurement system includes an LED light source providing an incident beam having a predetermined wavelength onto a radial or other artery, samples reflected light at a predetermined sample rate, computes, and displays a pulse waveform and various parameters associated therewith. The wavelength and sample rate are set so as to provide desired data quality.
    Type: Application
    Filed: April 19, 2021
    Publication date: September 30, 2021
    Inventors: Linran Fan, Zhen Li, Peiyuan Mao, Peng Yuan
  • Patent number: 10980428
    Abstract: A pulse waveform measurement system includes an LED light source providing an incident beam having a predetermined wavelength onto a radial or other artery, samples reflected light at a predetermined sample rate, computes, and displays a pulse waveform and various parameters associated therewith. The wavelength and sample rate are set so as to provide desired data quality.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 20, 2021
    Assignee: VIVIPULSE, LLC
    Inventors: Linran Fan, Zhen Li, Peiyuan Mao, Peng Yuan
  • Publication number: 20180168466
    Abstract: A pulse waveform measurement system includes an LED light source providing an incident beam having a predetermined wavelength onto a radial or other artery, samples reflected light at a predetermined sample rate, computes, and displays a pulse waveform and various parameters associated therewith. The wavelength and sample rate are set so as to provide desired data quality.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 21, 2018
    Inventors: Linran Fan, Zhen Li, Peiyuan Mao, Peng Yuan