Pulse Compression in Single-Mode Fibers: Picoseconds to Femtoseconds

摘要: The compression of frequency swept (in time) or “chirped” optical pulses was independently proposed by Gires and Tournois (1964) Giordmaine et al. (1968). Optical pulse is the analog microwave chirp radar developed Klauder (1960). accomplished in two steps. First, an sweep impressed on pulse. next step compensation this using a dispersive delay line, where group velocity varies with frequency. Ideally, line would impress opposite pulse, resulting to its minimum width, ~ 1/Δω, Δω sweep. Treacy (1968, 1969) first recognize that pair diffraction gratings suitable for linearly chirped pulse; he used compress inherently output mode-locked Nd: glass laser. Similar experiments were later performed Bradley (1970). Duguay Hansen (1969) LiNbO3 phase modulator Gire-Tournois interferometer from He-Ne