High-Power and Narrow Linewidth Tunable Laser by Si Photonics

Abstract

We demonstrated Si-photonic hybrid ring external cavity wavelength tunable lasers by passive alignment techniques with over 100-mW fiber-coupled power along the whole C-band. A spectral linewidth of 100 kHz was successfully attained using Micro-ITLA with a low-noise driving circuit. We achieved these attractive performances due to very low loss Si-wire waveguides whose loss was lower than 0.5dB/cm. Our obtained results show the excellent features of Si-photonics toward commercial products.