Patent · US Active

Tunable DBR laser and a method of operating a tunable DBR laser

US8995495B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Martin Schell · Berlin, DE
Patrick Runge · Berlin, DE

Key dates

Filing date	Dec 10, 2012
Grant date	Mar 31, 2015
Priority date	—
Expiry date	Dec 10, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/0261
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A tunable DBR laser including: an amplifier section, a part-reflecting optical output, a connection section connected to the amplifier section, and at least two wavelength-selective reflectors optically coupled to the amplifier section via the connection section. The connection section includes at least one MMI coupler and several waveguides, so that different optical paths lead from the amplifier section to the wavelength-selective reflectors and each of the different optical paths leads through the at least one MMI coupler and through one of the waveguides. The wavelength-selective reflectors differ from one another by having different reflection spectra and each of the wavelength-selective reflectors is connected to one of several outputs of the at least one MMI coupler. By activating a phase shifter, arranged in a course of at least one of the waveguides, the DBR laser can be switched between different resonators.

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