ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,359, issued on Nov. 3, was assigned to NEC Corp. (Tokyo).
"Wavelength tunable laser apparatus, optical transceiver, and wavelength control method" was invented by Masaki Oe (Tokyo) and Kenji Mizutani (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wavelength tunable laser apparatus (10) comprises: a semiconductor optical amplifier (121) that outputs light due to supplied power; a heater (124) that controls a wavelength of the light output from the semiconductor optical amplifier by performing heating due to the supplied power; and a control unit (11) in configured to control power, the power being supplied to the heater, in which the control ...