Patents Assigned to ZETTO, LTD.
  • All-fiber isolator using optical fiber including quantum dots
    Patent number: 9618777
    Abstract: An all-fiber isolator as an optical isolator comprises: an optical fiber acting as an optical light guide for propagating incident light; and a Faraday rotator for rotating by 45° a plane of polarization polarized by the polarizer. The all-fiber isolator exhibits a magneto-optic effect enough to be used as an optical isolator at a visible light wavelength by including quantum dots in a core layer and/or an internal cladding layer of the optical fiber.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: April 11, 2017
    Assignee: ZETTO, LTD.
    Inventors: Seong Min Ju, Young Woong Kim, Pramod R. Watekar, Seong Mook Jeong, Won Taek Han
  • ALL-FIBER ISOLATOR USING OPTICAL FIBER INCLUDING QUANTUM DOTS
    Publication number: 20150261020
    Abstract: An all-fiber isolator as an optical isolator comprises: an optical fiber acting as an optical light guide for propagating incident light; and a Faraday rotator for rotating by 45° a plane of polarization polarized by the polarizer. The all-fiber isolator exhibits a magneto-optic effect enough to be used as an optical isolator at a visible light wavelength by including quantum dots in a core layer and/or an internal cladding layer of the optical fiber.
    Type: Application
    Filed: August 27, 2012
    Publication date: September 17, 2015
    Applicant: ZETTO, LTD.
    Inventors: Seong Min Ju, Young Woong Kim, Pramod R. Watekar, Seong Mook Jeong, Won Taek Han