Ring Resonator Simulator | Silicon Photonics

Design Parameters

Ring Radius (µm)

5µm 7.0µm 10µm

Coupling Gap (µm)

0.1µm 0.15µm 0.3µm

Waveguide Width (nm)

Waveguide Height (nm)

Material System

Loss (dB/cm)

Tip: Adjust the coupling gap to control the Q-factor and extinction ratio. Smaller gaps lead to stronger coupling and lower Q.

Q-Factor

1950

Extinction Ratio

22.5 dB

FSR

12.5 nm

FWHM

0.8 nm

Finesse

15.6

Group Index

4.2

Effective Index: \(n_{eff} = \beta\lambda / 2\pi\)

Resonance Condition: \(2\pi R n_{eff} = m\lambda\)

Field intensity distribution at resonance wavelength showing coupling between bus waveguide and ring resonator.

Coupling Coefficient: \(\kappa = \kappa_0 \exp(-\gamma \cdot gap)\)

Loaded Q: \(Q_L = Q_i / (1 + \kappa^2 Q_i)\)