Tunable laser and modulator for pluggable coherent transcerivers

We developed a tunable TDA-CSG-DR laser and an InP-based DP-IQ modulator intended for pluggable coherent transceiver applications. The fabricated TDA-CSG-DR laser achieves narrow linewidth of less than 300 kHz and high fiber output power of more than +17 dBm; the developed InP-based DP-IQ modulator co-packaged with four linear driver ICs satisfies the power dissipation of less than 3.2W. These results are promising for the realization of high-density pluggable coherent transceiver for metropolitan area networks.