Improved Optical Amplification Efficiency by Using Turbo Cladding Pumping Scheme for Multicore Fiber Optical Networks

Hitoshi TAKESHITA  Keiichi MATSUMOTO  Hiroshi HASEGAWA  Ken-ichi SATO  Emmanuel Le Taillandier de GABORY  

IEICE TRANSACTIONS on Communications   Vol.E102-B   No.8   pp.1579-1589
Publication Date: 2019/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2018EBP3296
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission for Communications
multicore-EDFA,  cladding pumping,  recycle,  power consumption,  

Full Text: FreePDF(4.8MB)

We realize a multicore erbium-doped fiber amplifier (MC-EDFA) with 2dB optical gain improvement (average) by recycling the residual 0.98μm pump light from the MC-EDF output. Eight-channel per core wavelength division multiplexed (WDM) Nyquist PM-16QAM optical signal amplification is demonstrated over a 40-minute period. Furthermore, we demonstrate the proposed MC-EDFA's stability by using it to amplify a Nyquist PM-16QAM signal and evaluating the resulting Q-factor variation. We found that our scheme contributes to reducing the total power consumption of MC-EDFAs in spatial division multiplexing (SDM)/WDM networks by up to 33.5%.