
filters [9–17] for wavelength division multiplexing (WDM), optical switches [18–24],
isolators [25–27], static delay lines [28–32], and dynamic optical buffers [33–38].
In this chapter, we review the temporal coupled-mode theory formalism that
provides the theoretical foundation for many of these devices. As examples of
applications of this formalism, we then discuss nonlinear bistable optical switch
and dynamic optical buffers.
12.2 TEMPORAL COUPLED-MODE THEORY
FOR OPTICAL RESONATORS
Temporal coupled-mode theory [39] is a powerful theoretical framework for under-
standing a variety of effects that arise from the coupling between waveguides and
reso