Comprehensive frequency chirp characterization of silicon ring resonator modulators

Abstract

The frequency chirping properties of a silicon ring resonator modulator are experimentally investigated and compared to a numerical model. The influence of the wavelength detuning and the modulation frequency are highlighted for the first time.

Frequency Chirp Characterization of Silicon Ring Resonator Modulators

“…However, a comprehensive investigation of the frequency chirping properties of silicon RRMs is, so far, still lacking. We have recently reported a preliminary frequency chirp characterization of a silicon RRM where the dependence of the frequency chirp on the wavelength detuning between the laser source and the resonance and on the modulation frequency has been highlighted [6]. In this work, we complement the results of [6] by providing a new analysis of the frequency chirping properties of silicon RRMs by comparing the relative phases between the emitted power and instantaneous frequency waveforms as well as their amplitudes under sinusoidal modulation.…”

“…We have recently reported a preliminary frequency chirp characterization of a silicon RRM where the dependence of the frequency chirp on the wavelength detuning between the laser source and the resonance and on the modulation frequency has been highlighted [6]. In this work, we complement the results of [6] by providing a new analysis of the frequency chirping properties of silicon RRMs by comparing the relative phases between the emitted power and instantaneous frequency waveforms as well as their amplitudes under sinusoidal modulation. Both waveforms are measured in the time domain thanks to a coherent detection system and are then compared to a numerical model, showing a good qualitative agreement.…”