Patent ID: 9291509
Filing Date: 2016-03-22
CPC Classification: G01J

Claim Text:
1. A temporal stretching device for stretching a signal waveform comprising: an input dispersive element for dispersing an input signal waveform over a signal path to produce a dispersed input signal waveform; a pump pulse source; a pump pulse dispersive element for dispersing a pump pulse produced by the pump source over a pump path to produce a dispersed pump pulse; an optical coupler for combining the dispersed pump pulse and the dispersed input signal waveform; a four-wave mixer (FWM), wherein the four-wave mixer is coupled to the optical coupler for generating a signal waveform over a frequency range different from both frequency ranges of the dispersed pump pulse and the dispersed input signal waveform; a band-pass filter for separating the signal waveform from the dispersed pump pulse and the dispersed input signal waveform; and an output dispersive element for dispersing the signal waveform, wherein the input of the output dispersive element is coupled to the output of the band-pass filter for receiving the signal waveform.