title: Split spectrum: a multi-channel approach to elastic optical networking.
abstract: This paper introduces Split Spectrum, which enhances elastic optical networking by splitting a bulk traffic demand into multiple channels, when a single-channel transmission is prohibited by distance or spectrum availability. We performed transmission simulations to determine the maximum reach as a function of modulation format (dual polarization BPSK, QPSK, 16QAM), baud-rate (from 5 to 28 GBd), and number of ROADMs, for a Nyquist WDM super-channel with subcarrier spacing equal to 1.2 × baud-rate. Performance evaluation on two representative topologies shows that, compared to the previously proposed elastic optical networking, Split Spectrum doubles the zero-blocking load and achieves 100% higher network spectral efficiency at zero-blocking loads as a result of extended transmission distance and efficient utilization of spectrum fragments.
authors: Ericsson Research Silicon Valley, 200 Holger Way, San Jose, California 95134, USA. ming.m.xia@ericsson.com
authors: Ming
authors: M
authors: Xia
authors: R
authors: R
authors: Proietti
authors: Stefan
authors: S
authors: Dahlfort
authors: S J B
authors: SJ
authors: Yoo