Micro-ring resonator simulations for different (high and low index contrast) material platforms

Contact person: Patty Stabile (ECO): r.stabile@tue.nl flux 9.087,


The incessant increase in capacity and connectivity in communication networks motivates research into integrated electro-optic switching solutions. Microring resonators offer power efficient solutions for integrated switching circuits. The majority of published work on resonant switching has focused on single switch elements, crossbar matrices and serpentine architectures by using single-order resonant elements. However, single order micro-ring resonators are prone to nanometer scale wavelength variations from nano-scale fabrication variations, impeding scalable circuits. Higher-order resonators can decouple the bandwidth from the switch extinction, improving tolerance to variations in fabrication. Researcher at TU/e have designed the highest connectivity micro-ring resonator switch on Silicon-on-Insulator platform (Fig. 1a). Nonetheless, further scaling is hindered by switch element insertion losses. Therefore very recently the first 4x4 optical switch on InP has been fabricated based on a combination of on-chip amplification and low-energy through a voltage actuation scheme (fig. 1b).

The student will simulate single order and higher order micro-ring resonators into both material platform to investigate how refractive index contrast affects the single device performance. Also he will propose new single switching element concept for both platform in order to obtain improved performance.
Preferred skills:

- Affinity with photonics topics and simulation
- Ease to make simulation tool to run and simulations to converge
- Programming skills (C++, Matlab, …) for automated simulation scan