CHIRP-FREE DIRECTLY MODULATED LIGHT SOURCE WITH INTEGRATED WAVELOCKER

摘要

A light source (100) is disclosed for use in an optical communications system. In one aspect, a gain region defined by a first mirror (M1) and a second mirror (M2) is provided having a corresponding resonant mode, and an external cavity defined by a third mirror (M3) and the second mirror (M2) is also provided having a plurality of resonant modes. The second mirror (M2) is configured such that one of the external cavity resonant modes is selected. The single channel laser has wavelength precision sufficient to eliminate the need for an external wavelocker, and has an external cavity capable of being directly modulated in a chirp-free manner.