Add-drop filters based on mode-conversion cavities.
A new type of a resonator defined by two or more mode-converting gratings in a waveguide is proposed and analyzed. It is shown that the proposed structure can exhibit narrow resonances similar to Fabry-Perot cavities but has an advantage of being a four-port device and thus is capable of serving as an add-drop filter.
Khurgin
Jacob B
JB
Johns Hopkins University, Baltimore, Maryland 21218, USA. jakek@jhu.edu
Pruessner
Marcel W
MW
Stievater
Todd H
TH
Rabinovich
William S
WS