The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 2021
Filed:
Mar. 27, 2018
Beijing University of Technology, Beijing, CN;
Abstract
An anti-resonant hollow core optical fiber having multiple resonant layers. The optical fiber comprises a low-refractive index core region () and a high-refractive index cladding region. The high-refractive index cladding region comprises an inner cladding region () and an outer cladding region (). The outer cladding region () clads the inner cladding region () and the core region (). The inner cladding region () comprises a first anti-resonant layer () and a second anti-resonant layer (), and the first anti-resonant layer () and the second anti-resonant layer () surround the core region (); and the first anti-resonant layer () comprises several layers of microcapillary tubes, and the second anti-resonant layer () supports the first anti-resonant layer (). The optical fiber adopts a double-cladding structure and uses two or more anti-resonant layers such that theoretically simulated loss is reduced to 0.1 dB/km, and has the features of ultralow transmission loss, wide spectral bandwidth, low bending loss, low transmission loss, high damage threshold and single-mode transmission.