Open AccessMulti-channel multi-carrier generation using multi-wavelength frequency shifting recirculating loop
Author(s) -
Xinying Li,
Jianjun Yu,
Ze Dong,
Junwen Zhang,
Yufeng Shao,
Nan Chi
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.021833
Subject(s) - subcarrier , wavelength division multiplexing , optics , phase shift keying , channel spacing , optical carrier transmission rates , modulation (music) , physics , channel (broadcasting) , phase modulation , wavelength , computer science , bit error rate , telecommunications , phase noise , orthogonal frequency division multiplexing , optical fiber , radio over fiber , acoustics
We propose and experimentally demonstrate a novel scheme to generate optical frequency-locked multi-channel multi-carriers (MCMC), using a recirculating frequency shifter (RFS) loop based on multi-wavelength frequency shifting single side band (MWFS-SSB) modulation. In this scheme, optical subcarriers with multiple wavelengths can be generated each round. Furthermore, the generated MCMC are frequency- and phase-locked within each channel, and therefore can be effectively used for WDM superchannel. Dual-wavelength frequency shifting SSB modulation is carried out with dual-wavelength optical seed source in our experimental demonstration. Using this scheme, we successfully generate dual-channel multi-carriers, and one channel has 28 subcarriers while the other has 29 ones with 25-GHz subcarrier spacing. We also experimentally demonstrate that this kind of source can be used to carry 50-Gb/s optical polarization-division-multiplexing quadrature phase shift keying (PDM-QPSK) signal.