Optimization of ultrafast all-optical resonator switching

Area of Science:

• Photonics and Optical Engineering
• Materials Science for Optical Devices

Background:

• All-optical switching is crucial for high-speed optical communication networks.
• Resonator-based devices offer compact and efficient solutions for optical switching.
• Various resonator geometries exist, each with unique optical characteristics.

Purpose of the Study:

• To present general optimization arguments for resonator-based all-optical switching.
• To compare the performance of different all-optical switch geometries, including Fabry-Perot resonators, circular gratings, and micro-ring resonators.
• To establish analytical models for direct comparison of these geometries.

Main Methods:

• Development of analytical models for comparing all-optical switch geometries.
• Investigation of generic resonator geometries: Fabry-Perot resonators, circular gratings, and micro-ring resonators.
• Optimization arguments based on resonator characteristics and switching principles.

Main Results:

• Photonic band-gap resonators demonstrate a clear advantage over micro-ring resonators for all-optical switching.
• Analytical models enable direct comparison of different resonator-based switch designs.
• Specific features of Fabry-Perot resonators, circular gratings, and micro-ring resonators are highlighted.

Conclusions:

• Photonic band-gap resonators, utilizing Bragg-type reflection, are more advantageous than micro-ring resonators (total internal reflection) for all-optical switching.
• The analytical framework facilitates the selection and design of optimal resonator geometries for all-optical switches.
• Further research can explore specific applications and advanced designs based on these findings.