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Effect of Recycling a Backward Ase on Performance of Double Pass L-Band Edfa

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Abstract

A new double pass long wavelength band erbium-doped fibre amplifier (L-band EDFA) with a further improved gain is demonstrated using an un-pumped erbium-doped fibre (EDF) section. The wasted conventional band (C-band) backward amplified spontaneous emission (ASE) is used as a secondary pump source for the un-pumped EDF. A gain enhancement of 2 to 3.5 dB was observed without degradation in noise figure for the configuration where only the reverse propagated signal enters the un-pumped EDF. A high gain enhancement as high as 16 dB was observed especially at low pump powers for the configuration where the signal propagates twice through the un-pumped EDF. However, it degrades the noise figure severely.

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Authors and Affiliations

  1. Department of Physics, University of Malaya, 50603, Kuala Lumpur, Malaysia

    S. W. Harun & H. Ahmad

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  1. S. W. Harun
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  2. H. Ahmad
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Correspondence to S. W. Harun.

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Harun, S.W., Ahmad, H. Effect of Recycling a Backward Ase on Performance of Double Pass L-Band Edfa. J Opt 33, 181–186 (2004). https://doi.org/10.1007/BF03354763

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  • DOI: https://doi.org/10.1007/BF03354763

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