Electrically-pumped high-power laser transmitter integrated on thin-film lithium niobate

TL;DR

This paper demonstrates the integration of high-power, electrically-pumped lasers with high-speed modulators on a thin-film lithium niobate platform, advancing chip-scale optical systems.

Contribution

It presents the first integrated high-power laser with a 50 GHz modulator on TFLN, enabling high-performance, compact optical transmitters.

Findings

Achieved up to 60 mW optical power in TFLN waveguides.

Demonstrated an electrically-pumped laser integrated with a 50 GHz modulator.

Showcased a high-power optical transmitter on TFLN platform.

Abstract

Integrated thin-film lithium niobate (TFLN) photonics has emerged as a promising platform for realization of high-performance chip-scale optical systems. Of particular importance are TFLN electro-optic modulators featuring high-linearity, low driving voltage and lowpropagation loss. However, fully integrated system requires integration of high power, low noise, and narrow linewidth lasers on TFLN chip. Here we achieve this goal, and demonstrate integrated high-power lasers on TFLN platform with up to 60 mW of optical power in the waveguides. We use this platform to realize a highpower transmitter consisting an electrically-pumped laser integrated with a 50 GHz modulator.