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:
Apr. 27, 2010
Filed:
Jul. 30, 2004
Seung-hyun Cho, Kyungki-do, KR;
Byoungwhi Kim, Kyungki-do, KR;
Hyeong-ho Lee, Daejeon, KR;
Abstract
The method of manufacturing the optical fiber having the Bragg grating includes the steps of applying heat from a heat source to a predetermined portion of the optical fiber and thus diffusing impurities existing in a core of the optical fiber into a cladding of the optical fiber, so as to adjust an effective refractive index for a guided mode in the fiber corresponding to a predetermined wavelength, exposing UV light from an optical source to a phase mask having a periodic surface relief structure, and fabricating the Bragg grating having a predetermined period in the optical fiber using diffraction and interference of the UV light due to the periodic surface relief structure of the phase mask.