Open AccessEffects of erbium-doped fiber amplifier induced pump noise on soliton Kerr frequency combs for 64-quadrature amplitude modulation transmission
Author(s) -
Peicheng Liao,
Changjing Bao,
Arne Kordts,
Maxim Karpov,
Martin H. P. Pfeiffer,
Lin Zhang,
Yinwen Cao,
Ahmed Almaiman,
Amirhossein Mohajerin-Ariaei,
Fatemeh Alishahi,
Ahmad Fallahpour,
Kaiheng Zou,
Moshe Tur,
Tobias J. Kippenberg,
Alan E. Willner
Publication year - 2018
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.43.002495
Subject(s) - optics , quadrature amplitude modulation , amplitude modulation , physics , optical amplifier , amplifier , amplitude , erbium doped fiber amplifier , cross phase modulation , phase noise , materials science , frequency modulation , phase modulation , optoelectronics , bandwidth (computing) , telecommunications , laser , bit error rate , channel (broadcasting) , cmos , computer science
We experimentally investigate the effects of erbium-doped fiber amplifier induced pump noise on soliton Kerr frequency combs for 64-quadrature amplitude modulation (QAM) transmission. We find that the optical carrier-to-noise ratios (OCNRs) of the comb lines across the C-band almost linearly depend on the pump OCNR and are similar for a constant input pump power and noise. For a specific three-soliton state, despite higher comb line power, there is no noticeable OCNR improvement compared to the single-soliton comb. When the ASE noise on the pump is varied by 10 dB in the stable single-soliton state, the comb linewidths remain relatively unchanged and similar to the pump linewidth. Furthermore, four lines of the single-soliton Kerr comb produced by a pump light at an OCNR larger than 52 dB are used as coherent light sources to transmit 20-Gbaud 64-QAM signals over a 25-km fiber with bit error rate below the forward-error correction threshold.