Efficient Design of Coupled Microcavities at Optical Frequencies

Abstract

Simple and efficient approaches for filter design at optical frequencies using a large number of coupled microcavities are proposed. The design problem is formulated as an optimization problem with a unique global solution. Various efficient filter designs are obtained at both the drop and through ports. Our approaches are illustrated through a number of examples.

Optical filtering with axial whispering gallery modes on the surface of tapered optical fibers

“…Another application is to utilize ring resonators in optical telecommunications as add/drop filters in wavelength-division multiplexing schemes [10]. Coupling several microcavities into a single transmission line builds up a high-order filter that may give better spectral resolution [15].…”