Investigations of transient time-resolved spectral properties by using multi-fiber delay couple and optical multi-channel analysis

Investigations of the method and technique for measuring transient spectral time-resolved properties by using multi-fiber delay couple and optical multi-channel analysis were reported in this paper. The multi-fibers delay coupler constants of 5 pieces fibers with deferent lengths formed deferent time delay for passed each fiber light signal. The light signals were dispersed by a spectrometer, and then imaged in the focus plane of the spectrometer. Together with a fast optical-electric synchronization switcher, the light signals of the transient spectra were sampled, and processed by a microcomputer, finally formed a time-resolved spectrum. A time resolution of 5ns with wavelength range of 200-1100nm was reached using the method