New ring resonator configuration using hybrid photonic crystal and conventional waveguide structures

Area of Science:

• Photonics
• Optical Engineering
• Materials Science

Background:

• Ring resonators are fundamental components in integrated photonics.
• Achieving precise control over their optical characteristics (Q factor, FSR, FWHM) is crucial for device performance.
• Existing designs often have limitations in tunability and efficiency.

Purpose of the Study:

• To propose and analyze a new hybrid ring resonator design.
• To demonstrate enhanced controllability of key optical parameters.
• To achieve high optical efficiency in the proposed structure.

Main Methods:

• Utilizing a hybrid structure combining photonic crystal and conventional waveguides.
• Designing single-mode waveguides with specific core and clad refractive indices.
• Simulating and analyzing ring resonators of varying dimensions (35μm x 50μm and 35μm x 35μm).
• Investigating the impact of beam splitter ratio modification on the Q factor.

Main Results:

• A 35μm x 50μm ring resonator achieved an FSR of 14.1nm, a Q factor of 595, and 92.7% optical efficiency.
• Reducing the resonator size to 35μm x 35μm increased the FSR to 19.8nm.
• Modulating beam splitter ratios enhanced the Q factor to 1600.

Conclusions:

• The proposed hybrid ring resonator offers superior control over Q factor, FSR, and FWHM.
• This design presents a promising platform for advanced integrated photonic devices.
• The demonstrated tunability and efficiency pave the way for novel optical applications.