Title :
Comparison of 112-Gb/s PM-RZ-DQPSK and PM-RZ-D8PSK in Terms of OSNR Requirement and Transmission Impairments
Author :
Tipsuwannakul, Ekawit ; Sköld, Mats ; Karlsson, Magnus ; Andrekson, Peter A.
Author_Institution :
Dept. of Microtechnol. & Nanosci. (MC2), Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
We have, for the first time, experimentally investigated 112-Gb/s polarization-multiplexed return-to-zero differential 8-ary phase-shift keying (PM-RZ-D8PSK) with differential detection in terms of optical signal-to-noise ratio requirement, group velocity dispersion (GVD), and differential group delay (DGD) tolerances, together with a direct comparison with PM-RZ differential quadrature phase-shift keying at equivalent bit rate. The results indicate higher tolerances with respect to GVD and DGD but lower receiver sensitivity in the case of PM-RZ-D8PSK.
Keywords :
differential detection; differential phase shift keying; optical fibre LAN; optical fibre dispersion; optical fibre polarisation; optical modulation; optical receivers; optical transmitters; quadrature phase shift keying; wavelength division multiplexing; DWDM systems; Gigabit Ethernet; OSNR requirement; PM-RZ-D8PSK; PM-RZ-DQPSK; bit rate 112 Gbit/s; differential detection; differential group delay; differential quadrature phase-shift keying; group velocity dispersion; modulation format; optical signal-to-noise ratio; optical transmission; polarization multiplexed return-to-zero differential 8-ary phase-shift keying; receiver sensitivity; transmission impairments; Differential detection; differential 8-ary phase-shift keying (D8PSK); differential group delay (DGD); differential quadrature phase-shift keying (DQPSK); group velocity dispersion (GVD); modulation format; optical transmission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2031623
