Optical waveguide device

US6678452B1 · kind B1 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Peter Bloechl · Goslar, DE
• Gian-Luca Bona · Hedingen, CH
• Folkert Horst · Thalwil, CH
• Ilana Massarek · Thalwil, CH
• Bert Jan Offrein · Aarau, CH
• Roland Germann · Wangen, CH
• Huub Salemink · Wetzikon, CH

Key dates

• Filing date: Aug 15, 2001
• Grant date: Jan 13, 2004
• Expiry date: Aug 15, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/105
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical waveguide device is proposed which comprises a substrate, thereupon a lower cladding layer, thereupon an upper cladding layer and between said cladding layers a waveguide element. The influence of the substrate on the stress-induced birefringence of the optical waveguide device is reduced by modification of the substrate from underneath the waveguide element.