Measurement for waveform and chirping of optical pulses generated by directly modulated DFB laser and external EA modulator
作者： Han Yang , XiangSheng Liu , Jian Du , Wei Sun , DeHui Li
DOI: 10.1016/J.OPTLASTEC.2004.02.013
关键词:
摘要: Abstract Optical pulse generated by directly modulated distributed feedback (DFB) laser and external electro-absorption modulator (EAM) in virtue of the method fringe-resolved second-harmonic generation correlation was measured. Without pulse's shape being assumed, through iterative reconstruct interference signal, waveform phase reconstructed. The full-wave at half-maximum (FWHM) EAM under microwave modulation 2.5 GHz is 30.8 ps , whose close to that sech2-type pulse. FWHM DFB 18.3 Lorenz-type And original chirping smaller than laser.
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