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:
Dec. 20, 2022
Filed:
Mar. 03, 2021
University of Seoul Industry Cooperation Foundation, Seoul, KR;
Abstract
The present invention relates to an optical fiber device for removing cladding light, an apparatus and a method for etching the same. The optical fiber device comprises: a first optical fiber section through an Noptical fiber section arranged in sequence along a light travelling direction; and a first tapered coupling section coupling a Koptical fiber section and a (K+1)optical fiber section, where the Koptical fiber section is any one of the first optical fiber section through the Noptical fiber section and the (K+1)optical fiber section is any one of the first optical fiber section through the Noptical fiber section adjacent to the Koptical fiber section, wherein the Koptical fiber section comprises: at least one first subsection and at least one second subsection alternately arranged along the light travelling direction, each of the at least one first subsection having a diameter Dand a length L; and each of the at least one second subsection having a diameter Dand a length L; and a second tapered coupling section coupling the first subsection and the second subsection adjacent to the first subsection, wherein the diameter Dand the length Lof the first subsection and the diameter Dand the length Lof the second subsection of the Koptical fiber section and a diameter Dand a length Lof the first subsection and a diameter Dand a length Lof the second subsection of the (K+1)optical fiber section satisfy D>D, D>D, L>L, L>Land D=D, and satisfy D>Dfor odd K and D<Dfor even K (where N is a natural number, and K is any natural number satisfying 1≤K≤N−1).