Title :
Pilot-tone-aided transmission of high-order QAM for optical packet switched networks
Author :
Huynh, Tam N. ; Lim Nguyen ; Vujicic, Vidak ; Barry, Liam P.
Author_Institution :
Sch. of Electron. Eng., Dublin City Univ., Dublin, Ireland
Abstract :
We investigate novel pilot-aided transmission of high-order quadrature amplitude modulation (QAM) modulation formats for optical packet-switched networks. The proposed modulation scheme employs a pilot tone operating at the baud rate for noncoherent reception that is highly immune to laser phase noise. The results show that the system performance equivalent to static operation is achieved 5 ns after wavelength switching of a sampled grating distributed Bragg reflector (SG-DBR) tunable laser.
Keywords :
optical fibre networks; packet switching; quadrature amplitude modulation; SG-DBR tunable laser; high-order QAM; high-order quadrature amplitude modulation; optical packet switched networks; pilot-tone-aided transmission; sampled grating distributed Bragg reflector tunable laser; Laser noise; Optical fibers; Optical filters; Optical packet switching; Optical receivers; Optical transmitters; Phase noise; Direct detection; Fast switching; Laser phase noise; Pilot aided;
Journal_Title :
Optical Communications and Networking, IEEE/OSA Journal of
DOI :
10.1364/JOCN.6.000152
