Title :
Partial DPSK with excellent filter tolerance and OSNR sensitivity
Author :
Mikkelsen, B. ; Rasmussen, C. ; Mamyshev, P. ; Liu, F.
Author_Institution :
Mintera Corp., Acton, MA
Abstract :
Tolerance to optical filtering of a DPSK system can be increased significantly by decreasing the differential delay of the traditional MZI-demodulator to less than one bit-period. It is shown that a 43 Gbit/s DPSK signal can support 50 GHz channel spacing if the delay is decreased to 65% of a bit-period
Keywords :
differential phase shift keying; filtering theory; optical fibre networks; optical filters; sensitivity; wavelength division multiplexing; 43 Gbit/s; 50 GHz; MZI-demodulator; OSNR sensitivity; differential delay; differential phase shift keying; optical filtering;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20063003
