Numerical Investigation of Method of Reconstructing Gain-Switched Picosecond Pulses from Laser Diodes without Autocorrelation Measurements

作者：Wada Kenji^*; Matsuyama Tetsuya; Noritake Daisuke; Fukui Hidetoshi; Koyama Shinji; Horinaka Hiromichi

来源：Japanese Journal of Applied Physics, 2010, 49(3): 032702.

DOI：10.1143/JJAP.49.032702

A simple method for characterizing the amplitude and phase of picosecond optical pulses from gain-switched laser diodes without autocorrelation measurements is proposed, based on an iterative calculation using only the fundamental and second-harmonic power spectra of an optical pulse to be estimated. The feasibility of the proposed method is examined numerically for gain-switched picosecond pulses obtained using single-mode laser diode rate equations. As a result, although the lack of information normally obtained from autocorrelation measurements means that the initial conditions have a strong influence on the iterative calculation, the proposed method was found to correctly reconstruct the waveform and the frequency-chirp of gain-switched picosecond pulses with an accuracy close to that of the conventional method incorporating autocorrelation measurements.

• 出版日期2010