US Patent Issued to Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung on Feb. 3 for "DWDM intra-cavity laser device" (German Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,420, issued on Feb. 3, was assigned to Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. (Munich).

"DWDM intra-cavity laser device" was invented by Martin Moehrle (Berlin) and Moon-Hyeok Lee (Berlin).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention concerns a tunable Dense Wavelength Division Multiplex (DWDM) intra cavity laser device having a first optical wave guide having a first optical grating section, a second optical wave guide having a second optical grating section, an active gain section spatially separated from the second optical grating section and a phase section, and a DWDM-filter having an intra-c...