Elecronically tunable optical periodic surface filters with an alterable resonant frequency

US5619365A · kind A · utility

Assignee

• TEXAS INSTRUMENTS INCORPORATED · US

Inventors

• Charles M. Rhoads · McKinney, US
• Gary A. Frazier · Garland, US
• Richard G. Hoffman, II · Plano, US
• Oren B. Kesler · Plano, US
• Daniel Ryan · Sycamore, US

Key dates

• Filing date: May 30, 1995
• Grant date: Apr 8, 1997
• Expiry date: May 30, 2015

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/105
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. The surface filter comprising and electronically tunable electro-optic material to alter the resonant frequency of the element.