Vol. 42, Issue 1, pp. 55-68
Keywords
semiconductor optical amplifier, sampled grating distributed Bragg reflector laser, small-signal circuit model, optical frequency chirp
Abstract
In this paper, a small-signal equivalent circuit model of a semiconductor optical amplifier (SOA) monolithically integrated with a sampled grating distributed Bragg reflector (SGDBR) laser is presented. To take into account the wavelength dependence of the circuit parameters of our model, the extraction of parameters has been performed by fitting the circuit model including parasitic effect with measured S-parameters of the integrated device for different operating wavelengths of the SGDBR laser. The optical frequency chirp caused by the current modulation of the SOA section has been simulated by the obtained small-signal circuit model.