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Optimization of Pulley-Type Ring Resonator with Waveguide Offset.

Meng-Hua Yen¹, Pei-Yu Feng², Chu-En Lin³

¹Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan. emh1989@mail.ncut.edu.tw.

|November 15, 2018

Summary

This summary is machine-generated.

Optimizing pulley-type ring resonators with waveguide offset significantly reduces coupling loss and precisely tunes critical coupling. This enhancement boosts the Q-factor by 23.1%, improving resonator performance.

Keywords:

Q-factor ring resonators waveguide offset

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Area of Science:

Photonics and optical engineering
Integrated optics and waveguide devices

Background:

Pulley-type ring resonators are crucial optical components.
Efficient coupling and high Q-factor are essential for resonator performance.
Waveguide misalignments can degrade resonator characteristics.

Purpose of the Study:

To optimize pulley-type ring resonator performance.
To investigate the impact of waveguide offset on coupling efficiency and Q-factor.
To achieve precise tuning of critical coupling in ring resonators.

Main Methods:

Utilized the finite-difference time-domain (FDTD) method for numerical simulation.
Simulated a pulley-type ring resonator structure.
Analyzed the effect of input/output waveguide offset at the curved waveguide junction.

Main Results:

Significantly reduced coupling loss was achieved through waveguide offset.
Precise tuning of critical coupling was demonstrated.
The Q-factor of the ring resonator increased from 9180 to 11,302 (a 23.1% enhancement).
The offset structure exhibited a higher Q-factor compared to the non-offset structure.

Conclusions:

Waveguide offset is an effective optimization strategy for pulley-type ring resonators.
This method enhances resonator performance by improving coupling and Q-factor.
The findings enable the design of higher-performance optical resonators.