An Asymmetric High Serial Rate TDM PON With Single Carrier 25 Gb/s Upstream and 50 Gb/s Downstream
We report a 2:1 rate asymmetric high serial rate time division multiplexing passive optical network (TDM PON) with single carrier 25 Gb/s upstream and 50 Gb/s downstream. In the upstream, we present a first 25 Gb/s three level modulated burstmode receiver employing a 1/4 rate linear burst mode avalanch photodiode transimpedance amplifier and a custom decoder IC. We successfully demonstrated burst mode sensitivity of 20.4 dBm with 18 dB dynamic burst to burst for 25 Gb/s upstream links. In another direction, a downstream in upper O band is proposed and demonstrated with three level duo binary modulation at 50 Gb/s in real time. The upstream and downstream transmission experiments show that the proposed asymmetric 50 G/25 G high serial rate TDM PON can support =32 users while covering more than 20 km reach.
Journal of Lightwave Technology