Title :
Narrow-FSK optical packet labeling scheme for optical ethernet networks
Author :
López, A. ; Garcés, I. ; Losada, M.A. ; Martínez, J.J. ; Villafranca, A. ; Lázaro, J.A.
Author_Institution :
Zaragoza Univ.
Abstract :
In this work, an intensity modulation/frequency-shift keying (IM/FSK) orthogonal modulation scheme is achieved by direct modulation of a distributed feedback laser source using its adiabatic chirp characteristics. Optical frequencies for "1" and "0" bits are separated only 0.7 GHz, obtaining a narrow-FSK modulation and, accordingly, a low residual intensity modulation. Ethernet frames at 1.25 Gb/s (GbE) are transmitted with a label inserted using coded mark inversion codification at a 155-Mb/s rate. Error rates for the Ethernet payload and for the label have been measured for different payload extinction ratios, showing the viability of this scheme for distances up to 25 km
Keywords :
chirp modulation; distributed feedback lasers; frequency shift keying; intensity modulation; optical fibre LAN; optical modulation; 0.7 GHz; 1.25 Gbit/s; 155 Mbit/s; 25 km; Ethernet frames; Ethernet payload; adiabatic chirp; coded mark inversion codification; direct modulation; distributed feedback laser; error rate; intensity modulation; low residual intensity modulation; narrow-frequency-shift keying; optical Ethernet networks; optical frequencies; optical packet labeling; orthogonal modulation; payload extinction ratios; Chirp modulation; Distributed feedback devices; Ethernet networks; Frequency shift keying; Intensity modulation; Labeling; Optical feedback; Optical fiber networks; Optical modulation; Payloads; Frequency-shift keying (FSK) modulation; optical Ethernet; optical networks; packet labeling;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.879939
