Device for routing light among a set of optical waveguides

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United States of America Patent

PATENT NO 9703050
SERIAL NO

14142699

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Abstract

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Light streams are routed. A transparent plate can be provided in which at least 2 waveguides converge on an active region, wherein the active region comprises a switching element, which can be utilized to extract a portion of the light stream or combine two or more wavelength portions for form a subsequent light stream. Cladding material constrains a light stream to a waveguide. Ion bombardment can be utilized to form micropores in the cladding material, and subsequent etching can enlarge the micropores to form larger diameter pores (of nanometer scale) in the switching element. The pores can be filled with liquid crystal, which can be in a passive state with a first refractive (RI) index, and a second active state (electrical voltage applied) with a second RI. By adjusting the RI. the light stream can be diverted by operations of refraction, diffraction, reflection, etc.

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CITY UNIVERSITY OF HONG KONGKOWLOON

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  • 2013 Application Filing Year
  • G02B Class
  • 6559 Applications Filed
  • 5896 Patents Issued To-Date
  • 89.90 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2013201420152016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chan, Hau Ping New Territories, HK 3 1
Ho, Wing Fat New Territories, HK 1 1
Tsvetkov, Valentine A Moscow, RU 1 1

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1235356340512853141972332801 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0100020003000250500750125015001750225025002750325035003750

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 11, 2029