Dynamical Fabry-Pérot tuneable filter device

US8855149B2 · kind B2 · utility

Assignee

• Ludwig-Maximilians-Universitat Munchen · DE

Inventors

• Robert Huber · Schnaitsee, DE
• Wolfgang Wieser · Munich, DE
• Thomas Klein · Wehr, DE
• Christoph Eigenwillig · Schwanau, DE
• Benjamin Biedermann · Birkenfeld, DE
• Dieter Muellner · Brannenburg, DE
• Michael Eder · Lienz, AT

Key dates

• Filing date: Aug 13, 2012
• Grant date: Oct 7, 2014
• Expiry date: Sep 19, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/02251
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A Fabry-Pérot tunable filter device is described with reflecting elements separated by an optical path length to form an optical resonator cavity. A first actuator means is directly or indirectly coupled with a first reflecting element. And the first actuator means is configured to modulate the optical path length between first and second reflecting elements by a modulation amplitude to thereby sweep the optical resonator cavity through a band of optical resonance frequencies with a sweep frequency of 70 kHz or more. And the mechanical coupling between selected elements of the arrangement is sufficiently low such that when operated at the sweep frequency, the selected elements act as a system of coupled oscillating elements. In addition or alternatively, the first actuator means is directly or indirectly coupled with the first reflecting element so as to substantially drive the first reflecting element only.