US 12,388,532 B2
Direct digital chirp synthesizer and generating a chirped optical frequency comb
David Alexander Long, Bethesda, MD (US); and Benjamin James Reschovsky, Cabin John, MD (US)
Assigned to GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, Gaithersburg, MD (US)
Appl. No. 18/035,896
Filed by Government of the United States of America, as represented by the Secretary of Commerce, Gaithersburg, MD (US)
PCT Filed Nov. 8, 2021, PCT No. PCT/US2021/058412
§ 371(c)(1), (2) Date May 8, 2023,
PCT Pub. No. WO2022/099112, PCT Pub. Date May 12, 2022.
Claims priority of provisional application 63/110,678, filed on Nov. 6, 2020.
Prior Publication US 2024/0014903 A1, Jan. 11, 2024
Int. Cl. H04B 10/00 (2013.01); H04B 10/50 (2013.01); H04B 10/508 (2013.01); H04B 10/556 (2013.01); H04J 14/00 (2006.01)
CPC H04B 10/504 (2013.01) [H04B 10/508 (2013.01); H04B 10/556 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A direct digital chirp synthesizer for generating a chirped optical frequency comb, the direct digital chirp synthesizer comprising:
a direct digital synthesizer that receives a repetition frequency signal from a delay generator, receives a clock frequency from a frequency converter, produces a radiofrequency chirp waveform based on the repetition frequency signal and the clock frequency, and communicates the radiofrequency chirp waveform; and
an electro optic modulator in electrical communication with the direct digital synthesizer and that receives the radiofrequency chirp waveform from the direct digital synthesizer, receives laser light, and produces the chirped optical frequency comb from the laser light based on the radiofrequency chirp waveform.