Title :
Single modulator payload/label encoding and node operations for optical label switching
Author :
Lizé, Yannick Keith ; Liu, Xiang ; Kashyap, Raman
Author_Institution :
Dept. of Eng. Phys., Ecole Polytech. de Montreal, Que.
fDate :
5/1/2006 12:00:00 AM
Abstract :
We present and analyze payload/label encoding based on a single Mach-Zehnder modulator, in which the payload is differential phase-shift keyed and the label is amplitude-shift keyed through modulation of either the modulator bias or the amplifier gain. The encoding is analyzed numerically and experimentally. Simultaneous encoding of a 10-Gb/s payload and a 155-Mb/s label is demonstrated with high receiver sensitivities. Penalty-free transmission over 80 km of standard single-mode fiber is achieved for both the payload (with dispersion compensation) and the label (without dispersion compensation). Furthermore, polarization-independent label processing and payload wavelength conversion at intermediate nodes are proposed for potentially cost-effective node operations
Keywords :
amplitude shift keying; differential phase shift keying; encoding; optical fibre communication; optical fibre polarisation; optical modulation; optical receivers; optical switches; optical wavelength conversion; 10 Gbit/s; 155 Mbit/s; 80 km; Mach-Zehnder modulator; amplifier gain; amplitude-shift keying; differential phase-shift keying; intermediate nodes; label encoding; modulator bias; modulator payload encoding; node operations; optical label switching; payload wavelength conversion; penalty-free transmission; polarization-independent label processing; receiver sensitivities; standard single-mode fiber; Amplitude modulation; Differential amplifiers; Encoding; Optical modulation; Optical receivers; Optical sensors; Optical wavelength conversion; Payloads; Phase modulation; Stimulated emission; Differential phase-shift keying (DPSK); Mach–Zehnder modulator (MZM); optical label switching;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.873925
