Title :
DAC enabled spectrally efficient CP-QPSK at 28Gbaud
Author :
Duthel, Thomas ; Raabe, Christian ; Hermann, Peter ; Whiteaway, J.E.A. ; Geyer, J.C. ; Fludger, C.R.S. ; Kupfer, Theo
Author_Institution :
Cisco Opt. GmbH, Nuremberg, Germany
Abstract :
We present channel spacing measurements on a 28Gbaud CP-QPSK transmitter applying Nyquist-like signal shaping without using optical filters. This is enabled by a single sample per symbol digital-to-analog converter in combination with strong analog electrical filtering. OSNR performance is evaluated against a commercial real-time receiver.
Keywords :
digital-analogue conversion; optical transmitters; quadrature phase shift keying; CP-QPSK transmitter; DAC; Nyquist-like signal shaping; OSNR performance; analog electrical filtering; channel spacing measurements; digital-to-analog converter; optical filters; real-time receiver; spectrally efficient CP-QPSK; Finite impulse response filters; Optical filters; Optical polarization; Optical receivers; Optical transmitters; Optical variables measurement;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
Conference_Location :
Amsterdam
