Advanced photoreceivers for 40 and 100 Gbit/s optical communication networks

The rapidly increasing bandwidth demand requires deployment of 40 Gbit/s systems and 100 Gigabit Ethernet in the near future. Different reach applications exploit advanced modulation formats employing spectral shaping and phase coding. The resulting different solutions for photoreceivers are summarized and efforts within the industry towards integrated solutions are described. First results of integrated DPSK receivers with co-packaged delay interferometers will be presented.