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Abstract
A simulation of optical short pulse generation using a DFB (distributed feedback) laser/EA (electroabsorption) modulator integrated light source was carried out. The dependence of the pulse shape and the spectrum on the isolation resistance between the laser and the modulator part is clarified. Theoretical results show that the spectrum is affected more seriously than the pulse shape by the isolation resistance. An isolation resistance of larger than 500 k Omega is required for transform-limited pulse generation. Utilizing an integrated light source with an isolation resistance of 10 M Omega , optical short pulse generation at a 5-GHz repetition rate was experimentally obtained with a pulsewidth of 33 ps and with a spectral bandwidth of 9.4 GHz.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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