Enhanced optical gain clamping for upstream packet based traffic on hybrid WDM/T...

• Author(s): Neto, B. ; Klingler, A. ; Reis, C. ; Dionísio, R. P. ; Nogueira, R. N. ; Teixeira, A. L. J. ; André, P. S.
• Date: 2010
• Persistent ID: http://hdl.handle.net/10400.11/1287
• Origin: Repositório Científico do Instituto Politécnico de Castelo Branco
• Subject(s): Next-generation access networks; Bursty/packeted traffic; Erbium doped fiber amplifiers transientes; Gain clamping
• Document Type: Article
• Language: English

Description

In this paper, we propose a method to mitigate the temporal power transients arising from Erbium doped fiber amplifiers (EDFAs) on packeted/bursty scenario. The technique, applicable on hybrid WDM/TDM-PON for extended reach, is based on a low power clamping provided by a distributed feedback (DFB) laser and a fiber Bragg grating (FBG). An mprovement in the data signal Q factor was achieved keeping the clamping control signal with a low power, accompanied by a maximum reduction in the gain excursion of 1.12 dB