An invertible Volterra model of second-order distortion in DFB lasers

A closed-form nonlinear model of the distributed feedback (DFB) laser accounting for all of its distortion mechanisms is presented. The laser's nonlinearity is analyzed by combining Volterra models of the laser's driving circuit and pn heterojunction nonlinearity with rate equation based models of the active region nonlinearities. The prediction of the model is then compared to distortion measurements.<
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