Operating wavelength range of 25.8-Gb/s 1.3-µm DML extended to 30 nm

A 30-nm operating wavelength range was realized for a 1.3-μm InGaAlAs DML with a 25.8-Gb/s push-pull driving configuration. Clear eye openings, an 8.0-dBm output power, and a 4.0-dB dynamic extinction ratio were obtained.

I. Introduction

The recent explosive increase in data traffic due to the spread of such technologies as the internet and the smart phone, has led to the need for a higher speed optical network system. At datacenters, there is an increasing demand for a high-speed light source with an ultra high capacity of up to 1 Tb/s. For this application, the light source must offer both a large capacity and a low power consumption.