Performance Investigation of Triple Ring Resonator Based Optical Filter Through Eye Diagram

A side joined diagonally arranged triple asymmetric optical ring resonator (TAORR) is modelled and analysed as optical add-drop filter (OADF). The delay line (DL) approach is used to model the structure whose transmittance is deliberated in Z-plane using Mason’s principle. The transmittance is observed from signal flow graph of the model. The performance is analysed in terms of Free-Spectral-Range (FSR), Dispersion (DP) and Group Delay (GD) in MATLAB environment. The field transmission is observed at ON resonance condition in finite-difference-time-domain (FDTD) method. The performance of TAORR is also investigated by presenting “EYE” diagram in Opti-System software. High FSR, low crosstalk and open eye diagram make TAORR model exceptional from other optical filters.