Patent · US Expired

Device for wavelength-related stabilization of an optical filter

US5894533A · kind A · utility

5Cited by

3References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gerhard Heise · Munich, DE
Achim Reichelt · Unterhaching, DE
Herbert Michel · Munich, DE
Reinhard Maerz · Munich, DE

Key dates

Filing date	Mar 6, 1997
Grant date	Apr 13, 1999
Priority date	—
Expiry date	Mar 6, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/12028
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A device for the wavelength-related stabilization of an optical filter, particularly a wavelength-division multiplexer/demultiplexer, comprises a Bragg grating arranged in the proximity of the filter and a waveguide for supplying a fixed optical reference wavelength to the grating. The grating is regulated to either a maximum transmission and minimum reflection or a minimum transmission and maximum reflection of the reference wavelength by controlling the temperature of the grating and of the filter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.