1. Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update, 2015–2020 White Paperhttps://www.cisco.com/c/en/us/solutions/collateral/service-provider/visual-networking-index-vni/mobile-white-paper-c11-520862.html
2. Scaling the ‘Data Tsunami’ and Market Opportunity for Optical Interconnect In Data Centershttps://www.lightcounting.com/News_030613.cfm
3. The Zettabyte Era: Trends and Analysishttps://files.ifi.uzh.ch/hilty/t/Literature_by_RQs/RQ%20102/2015_Cisco_Zettabyte_Era.pdf
4. Advances in integrated photonic circuits for packet-switched interconnection
5. Planar lightwave devices for WDM;Doerr,2002