Abstract

Experimental and theoretical analysis of the gain dynamics of all-optically stabilized multichannel erbium-doped fiber amplifier (EDFA) and the impact on wavelength division multiplexed (WDM) networks performance requirements is presented. In particular, we focus on precise analysis of the detailed transient response of the surviving channel and the relaxation oscillations of the compensating (lasing) signal. The main objective of this work is to experimentally and theoretically analyze and examine some of the critical factors such as, lasing wavelength, gain recovery time, relaxation oscillation frequency of the feedback loop, and the number of channels dropped/added, that affect the transient power excursions in the surviving channel. First, we consider the applicability of laser automatic gain control (AGC) to control fast power transients in WDM optical networks and reports the first high resolution measurements of transients in such gain controlled EDFA's. Second, the experimental results are compared with those predicted from a numerical simulation of the dynamic of the gain controlled EDFA.

[IEEE ]

WDM burst mode signal amplification by cascaded EDFAs with transient control

Toru Yoshikawa, Kazuro Okamura, Eisuke Otani, Takeo Okaniwa, Tatsuji Uchino, Masaru Fukushima, and Nobuyuki Kagi
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Design and analysis of dynamic erbium-doped fiber amplifier gain-clamping systems with feedback control

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Transient Link Control Technique Applied to Optical Hybrid Amplifier (EDFA + DFRA) Cascades

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Opt. Express 21(26) 32589-32598 (2013)

Minimizing gain transient dynamics by optimizing the erbium concentration and cavity length of a gain clamped EDFA

P. S. Chan and H.K. Tsang
Opt. Express 13(19) 7520-7526 (2005)