Analysis of Si3N4 based micro ring resonator filter design using Taguchi Method for WDM application

Tan, Kien Hau (2024) Analysis of Si3N4 based micro ring resonator filter design using Taguchi Method for WDM application. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This study proposes the Silicon-Nitride (Si3N4) Optical Micro Ring Resonator (MRR) filter design optimization for the wavelength division multiplexing (WDM) application. In previous research, graphene-based filters produced a low value of FSR, resulting in a reduction in bandwidth and a high propagation loss. To address these issues, a Silicon Nitride (Si3N4)-based MRR was proposed for its potential to produce low loss, high optical power tolerance, and a broad spectral operation band. The Coupled Mode Theory (CMT) and Transfer Matrix (TMM) have been applied to model the MRR filter configuration on the silicon nitride (Si3N4) platform. The geometrical parameters variations influence on MRR filter was statistically analyzed by using the MATLAB software. The designed filter was optimized by using Taguchi Method, where the key performance in terms of FSR and Q factor has been investigated which involves four control elements that are micro ring radius, waveguide width, gap distance between micro ring and waveguide, and fabrication height. Upon completion, it was found that the highest Q-factor value and FSR of the proposed design was 22225732699.7613 and 196910.35 nm, respectively, obtained at gap separation of 0.45 μm for ring radius of 20 μm, height of 0.28 μm and waveguide width of 0.6 μm.

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