Analysis of optical re-modulation by multistage modeling of RSOA

Theoretical Analysis of Directly Modulated Reflective Semiconductor Optical Amplifier Performance Enhancement by Microring Resonator-Based Notch Filtering

“…Because the amplitude distortions incurred by these effects on the encoded bits at the RSOA output are intense, the variances in the denominator of (9) dominate over the variances of conventional noise components, such as those associated with the RSOA amplified spontaneous emission (ASE) [30]. Moreover, given that the statistics of these distortions follow the Gaussian distribution [30], the relationship between the EP and the Q-factor reads [57]…”

“…For this purpose, we apply the model proposed in [27] to theoretically describe the operation of an RSOA when directly modulated by an electrical data pattern, a task that we initiated within the frame of [28]. Unlike the usually followed modeling approach, which involves solving a set of coupled partial nonlinear differential equations with boundary conditions [29,30], and hence is computationally demanding, this reduced model has been formulated on the basis of valid assumptions and prior framework [31] in such way that it allows one to derive the encoded signal at the RSOA output from the solution of a single standard differential equation in the time domain. This fact greatly simplifies the computational complexity while still providing realistic and accurate results.…”