Photonic flip-flop based solutions to overcome memory-wall challenges

In this paper, a compact-designed hybrid-integrated all-optical flip-flop (AOFF), with InP-based semiconductor optical amplifiers (SOA) integrated on planar silicon on insulator (SOI) waveguide platform, is shown. For this purpose, all needed passive components namely straight waveguide, s-bends und multimode interference (MMI) couplers with s-bended waveguide, are investigated in the first part of report. The Mach Zehnder interferometer (MZI) [1] is taken into account regarding the transfer function for signal access for AOFF both with asymmetrical MMI and with symmetrical MMI. A thermo-optical analysis is carried through with quasi-analytical approach and simulations. In the second part, the compact-designed hybrid-integrated AOFF is evaluated as system and its outputs are analyzed. It is shown that by injecting 200 ps optical pulse train with 8.45 dBm power through its set and reset port the AOFF changes its states. The proposed study is of interest in the design of compact heterogeneous integrated AOFF.