Assessment and mitigation of Erbium-doped fibre amplifiers (EDFA) gain transients in hybrid wavelength division multiplexing/time division multiplexing passive optical network (WDM/TDM PON) in the presence of packet-based traffic

作者：Neto B^*; Reis C; Dionisio R P; Ferreira J M; Lazaro J A; Tosi Beleffi G; Pinto A N; Nogueira R; Teixeira A; Prat J; Andre P S

来源：IET Optoelectronics, 2010, 4(6): 219-225.

DOI：10.1049/iet-opt.2009.0065

In this study, the authors present an innovative gain clamping method to mitigate Erbium-doped fibre amplifiers transients under bursty or packetised traffic. This method is based on a lasing technique by means of a continuous wave feedback signal reflected on a fibre Bragg grating. The clamping was assessed using on a range of re-injected powers from -30 to -5 dBm and able to fully mitigate the packet transients. The performance of the system at 2.5 and 10.0 Gb/s was appraised for different inter-packets times being observed in all cases an improvement in the Q factor. Additionally, a study that includes a characterisation of the transients (gain excursion and decaying time) with the inter-packet parameters and a comparison with theory was also presented.

• 出版日期2010-12