Patent · US Expired

Wavemeter having two interference elements

US6937346B2 · kind B2 · utility

61Cited by

7References

19Claims

0Family size

Assignee

AGILENT TECHNOLOGIES, INC. · US

Inventors

Bernd Nebendahl · Leonberg, DE
Andreas Schmidt · Braunschweig, DE
Matthias Jaeger · Meuselwitz, DE

Key dates

Filing date	Apr 29, 2002
Grant date	Aug 30, 2005
Priority date	—
Expiry date	Jan 26, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/0687
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A wavemeter for determining a wavelength of an incident optical beam comprises four optical components, each being arranged in the incident optical beam or in a part of it, providing a path with a respective effective optical length, and generating a respective optical beam with a respective optical power depending on the wavelength of the incident optical beam. The optical powers oscillate periodically with increasing wavelength, and a phase shift of approximately pi/2 is provided between two respective pairs of the four optical components. Respective power detectors are provided, each detecting a respective one of the optical powers. A wavelength allocator is provided for allocating a wavelength to the incident optical beam based on the wavelength dependencies of the detected first, second, third, and fourth optical powers.

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