US Patent 7123798 Optical device and method of producing the same

Patent 7123798 was granted and assigned to NGK Insulators on October, 2006 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

NGK Insulators

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7123798

Date of Patent

October 17, 2006

Patent Application Number

10396734

Date Filed

March 25, 2003

Patent Primary Examiner

‌

Phan T. H. Palmer

Patent abstract

An optical fiber, which is provided in each of channels of an optical fiber array disposed on V-grooves, has a portion (reflecting section) at which a core is cut out at an intermediate position of the optical fiber. The reflected light, which is split from a signal light transmitted in the core of the optical fiber on the basis of a refractive index difference at the reflecting section, is obtained through a index matching layer provided outside a clad of the optical fiber. The reflected light is monitored by a photodetector of a photodetecting array.