Patents by Inventor Liang Al

Liang Al 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).

  • Single mode optical fiber with ultra-low attenuation and bend insensibility
    Patent number: 10151873
    Abstract: An optical fiber with ultra-low attenuation and bend insensitivity includes a core layer and cladding layers. The cladding layers have an inner cladding layer surrounding the core layer, a trench cladding layer surrounding the inner cladding layer, an auxiliary outer cladding layer surrounding the trench cladding layer, and an outer cladding layer surrounding the auxiliary outer cladding layer. The core layer has a radius of 3.0-3.9 ?m, and a relative refractive index difference of ?0.04% to 0.12%. The inner cladding layer has a radius of 8-14 ?m, and a relative refractive index difference of about ?0.35% to ?0.10%. The trench cladding layer has a radius of about 14-20 ?m, and a relative refractive index difference of about ?0.6% to ?0.2%. The auxiliary outer cladding layer has a radius of about 35-50 ?m, and a relative refractive index difference of about ?0.4% to ?0.15%. The outer cladding layer is a pure silicon-dioxide glass layer.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: December 11, 2018
    Assignee: YANGTZE OPTICAL FIBRE CABLE JOINT STOCK LIMITED COMPANY
    Inventors: Jihong Zhu, Lei Zhang, Shengya Long, Jun Wu, Liang Al, Ruichun Wang