Extended L-band WDM Optical Communication System For Next-generation Access Networks

Wavelength division multiplexed passive optical networks (WDM-PONs) are perceived as the ultimate form of next-generation passive optical networks (NG-PONs) that show promising outlooks in meeting the ever-growing demand of telecommunication capacities and internet traffic. In this proposal, an InAs/InP quantum dash laser diodes (QDLD) is investigated as an ideal contender to satisfy various requirements of (NG-PONs), owing to is emission in the mid and far L-band region, which allows for expanding the utilizable bandwidth away from the over-exhausted C-band in addition to accommodating more network subscribers for less capital expenditure. In particular, QDLD will be deployed to generate a single multi-wavelength laser source, which will then be deployed in a dense wavelength division multiplexed system to demonstrate a simultaneous five-channel transmission in the mid L-band wavelength window, with an aggregative data capacity beyond 0.5 Tbit/s. Successful completion of the proposed project will provide a novel solution of 100 G and 400 G NG-PONs to the communication and information technology field, particularly to the optical access networks, and help in addressing the data center challenges.