Patent ID: 11902495
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. The ultrafast camera system of claim 11, wherein the timing detector comprises
a loop interferometer that modulates the optical signal using the reference signal in a loop where the optical signal is divided and the divided signals circulate in different directions, and outputs two interference signals generated from interference between the signals circulating the loop,
an optical switch that alternately inputs a first signal predetermined in the two interference signals and a second signal before being input to the loop interferometer, to a spectrum analyzer,
the spectrum analyzer that alternately disperses the first signal and the second signal alternately entered from the optical switch, into the wavelength spectrum, and then measures an intensity of the dispersed first signal and the dispersed second signal respectively, and
a computing device that calculates an optical power correction value being a ratio of a reference optical power and the intensity of the dispersed second signal measured by the spectrum analyzer, and corrects the intensity of the dispersed first signal with the optical power correction value.