ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,926, issued on June 3, was assigned to Thorlabs Quantum Electronics Inc. (Jessup, Md.).

"Tunable laser assembly" was invented by Peter J. S. Heim (Washington), John Hryniewicz (Columbia, Md.), Jacob Mertz (Elkridge, Md.) and Jianfei Wang (Potomac, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tunable laser assembly housed in a single enclosure and a method of control is described wherein the tunable laser, pump and semiconductor optical amplifier do not share a common optical axis but are all aligned to optical waveguides on an intervening planar lightwave circuit (PLC). Wavelength monitoring circuitry is included on the PLC to enable monitori...