Mitigation of EDFA transient effects in variable duty cycle pulsed signals |
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Institution: | 1. Electronics and Radar Development Establishment (LRDE), DRDO, Bangalore, Karnataka, 560093, India;2. Model Engineering College, Thrikkakara, Cochin, Kerala, 682021, India;3. Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India |
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Abstract: | We report the transient effects in Erbium Doped Fiber Amplifier (EDFA) systems for pulsed signals with different duty-cycles. The work includes the analysis using three different duty-cycles, 10%, 20% and 50%. A curve fitting technique is also proposed to predict the transients of any lesser duty-cycled pulse, once the transients of a larger duty-cycled pulse is known. Mathematical evaluation confirms the double exponential shape of transient distorted signal. Further, EDFA transient effect is experimentally verified on a Wavelength Division Multiplexed (WDM) link by multiplexing high and low bitrate modulated optical signals. We conclude the paper by proposing a transient suppression technique for variable duty-cycle signals and analyzing its effectiveness with different wavelength spacing. |
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Keywords: | EDFA Transients WDM Variable duty cycle Suppression |
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