Broadly tunable InGaAsP/InP laser based on a vertical coupler filter with 57-nm tuning range

Abstract

We have integrated a broadly tunable grating-assisted vertical coupler as an intracavity filter to demonstrate a novel monolithic multiple-quantum-well InGaAsP/InP laser. The narrow, bandpass intracavity filter results in an extended cavity laser with a measured electrical tuning range of 57 nm with single-frequency operation over most of that range.