Optical waveguide and method for manufacturing the same

US10310179B1 · kind B1 · utility

Assignee

• Industrial Technology Research Institute · TW

Inventors

• Chih-Jen Yang · Baoshan, TW
• Li Ting Huang · Longbeilingcun, CN
• Dong Chen · Dongguan, CN
• Chyi-Ming Leu · Hengshan, TW

Key dates

• Filing date: Dec 28, 2017
• Grant date: Jun 4, 2019
• Expiry date: Dec 28, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2006/12076
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical waveguide includes a lower clad layer, a core layer, and an upper clad layer, wherein the core layer is disposed between the lower clad layer and the upper clad layer. The lower clad layer has a composition including unetchable closed-loop polyimide and plate-shaped clay in a range of 20 wt %-60 wt %. The core layer has a composition including etchable closed-loop polyimide and plate-shaped clay in a range of 20 wt %-60 wt %. The upper clad layer has a composition including an organic material and plate-shaped clay in a range of 20 wt %-60 wt %. The core layer has a refractive index lager than that of the upper clad layer and the lower clad layer.