Automatic Wavelength Tuning of Series-Coupled Vernier Racetrack Resonators on SOI

TL;DR

This paper demonstrates an automatic wavelength tuning method for a silicon-on-insulator two-ring Vernier filter using in-resonator photoconductive heaters, enabling precise control across the entire C-band.

Contribution

It introduces a novel tuning approach utilizing in-resonator photoconductive heaters for Vernier resonators on SOI, achieving full C-band tuning.

Findings

Successful automatic tuning across the entire C-band

Enhanced stability and control of Vernier resonators

Potential for integrated photonic applications

Abstract

Using in-resonator photoconductive heaters to both sense and control the intra-cavity light intensity of microring resonators, automatic tuning of a silicon-on-insulator two-ring Vernier filter is demonstrated across the entire C-band.