Title:
【発明の名称】クラッドモード抑制ファイバブラッググレーティング
Document Type and Number:
Japanese Patent JP2003510631
Kind Code:
A
Abstract:
An optical waveguiding fiber has a photosensitive core and a cladding that includes a photosensitive inner cladding region adjacent the core and an outer cladding region. The inner cladding region and the outer cladding region have substantially equal indices of refraction. The photosensitivity of the inner cladding region is sufficient to cause a modulation of the index of refraction of the inner cladding when exposed to ultraviolet light. In another aspect of the invention, the optical fiber includes a grating in the core, which extends radially into the inner cladding region. The core and the inner cladding region of the optical fiber are doped with concentrations of Ge and B sufficient to impart photosensitivity to the inner cladding region, and to result in an index of refraction in the inner cladding region substantially equal to the index of refraction of the outer cladding region.
Inventors:
Bertia Vikrum
Kariya Adam Kay.
Dong Liang
Maro Maren A.
Chi Gun
Kariya Adam Kay.
Dong Liang
Maro Maren A.
Chi Gun
Application Number:
JP2001525448A
Publication Date:
March 18, 2003
Filing Date:
August 25, 2000
Export Citation:
Assignee:
Corning Incorporated
International Classes:
C03C13/04; G02B5/18; G02B6/036; G02B6/10; G02B6/02; (IPC1-7): G02B6/10; C03C13/04; G02B6/16; G02B6/22
Attorney, Agent or Firm:
Fujihiko Motohiko