Single and multilayer waveguides and fabrication process

US6785447B2 · kind B2 · utility

Assignee

• FUJITSU LIMITED · JP

Inventors

• Tetsuzo Yoshimura · Machida, JP
• Yasuhito Takahashi · Hirakata, JP
• James J. Roman · Sunnyvale, US
• Solomon I. Beilin · Redwood City, US
• Wen-chou Vincent Wang · Cupertino, US
• Masaaki Inao · San Jose, US

Key dates

• Filing date: Jan 22, 2001
• Grant date: Aug 31, 2004
• Expiry date: Apr 21, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K1/14
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optoreflective structure for reflecting an optical signal following a path defined by an optical waveguide comprising a first cladding layer having a first planar cladding surface; a waveguide disposed on the first cladding layer; and a second cladding layer disposed on the waveguide and having a second planar cladding surface. The first cladding layer, the second cladding layer and the waveguide terminate in a generally dove-tailed structure having a beveled planar surface. An optoreflector is disposed on the beveled planar surface for a changing direction of an optical signal passing through the waveguide. Methods of producing the optoreflective structure are disclosed.