Patent ID: 7236247
Filing Date: 2007-06-26
Classification: G01J,G01N

Abstract:
1. A method of measuring a sample temporal waveform of a sample optical pulse, the method comprising: providing a sample optical pulse having a sample temporal waveform; measuring a Fourier transform magnitude of the sample temporal waveform; providing a reference optical pulse having a reference temporal waveform; obtaining a Fourier transform magnitude of the reference temporal waveform; forming a first composite optical pulse comprising the sample optical pulse followed by the reference optical pulse, the first composite optical pulse having a first composite temporal waveform; measuring a Fourier transform magnitude of the first composite temporal waveform providing a time-reversed pulse having a time-reversed temporal waveform corresponding to the reference temporal waveform after being time-reversed; forming a second composite optical pulse comprising the sample optical pulse followed by the time-reversed optical pulse; measuring a Fourier transform magnitude of the second composite temporal waveform; calculating the sample temporal waveform using the Fourier transform magnitude of the sample temporal waveform, the Fourier transform magnitude of the reference temporal waveform, the Fourier transform magnitude of the first composite temporal waveform, and the Fourier transform magnitude of the second composite temporal waveform; and displaying information reparding the sample temporal waveform.