Double critical coupled ring resonator-based add–drop filters

Photonic Crystal Ring Resonator Based Optical Filters

8 Ring-Resonator-Based Wavelength Filters

8.1 Introduction Microring resonators (MR) represent a class of filters with characteristics very similar to those of Fabry–Perot filters. However, they offer the advantage that the injected and reflected signals are separated in individual waveguides, and in addition, their design does not require any facets or gratings and is thus particularly simple. MRs evolved from the fields of fibre opti...

InP-Based Passive Ring-Resonator-Coupled Lasers

Design of passive ring-coupled lasers based on InGaAsP waveguides is investigated using beam propagation method. Mode coupling, propagation loss due to bending, and scattering loss from waveguide sidewall roughness are taken into account. By compromising threshold gain, linewidth and side-mode suppression ratio (SMSR), suitable waveguide width and coupling strength are determined for different ...

Photonic crystal ring resonator-based add drop filters: a review

Study of Slotline Ring Resonator Based Microwave Filters