Bottom-Up Abstract Modelling of Optical Networks-on-Chip: From Physical to Architectural Layer
Figure 2
((a)-left) Sketch of a microring resonator with orthogonal access waveguides. ((a)-right) Sketch of an orthogonal planar crossing. (b) The PSE can be considered as the cascading of the microring with the crossing . If the wavelength of the optical carrier signal is resonant with the microring, the data stream on the Port 1′ is routed toward Port 2′; if the optical signal is not resonant, the data stream is routed to Port 3′. Dually, a signal coming from Port 4′ is routed to Port 3′ if resonant, while continuing to Port 2′ if out of resonance. The device is bidirectional, that is, each of the ports can act as input or output, but not simultaneously. (c) Representation of the PSE as it appears when discretized inside the 2D-FDTD code; in this case, the transmission at the intersection between the waveguides is optimized using an MMI-based crossing.
