Efficient erbium-doped fiber amplifiers incorporating an optical isolator

Michalis N. Zervas; Richard Ian Laming; David N. Payne

doi:10.1117/12.141124

23 March 1993 Efficient erbium-doped fiber amplifiers incorporating an optical isolator

Michalis N. Zervas, Richard Ian Laming, David N. Payne

Proceedings Volume 1789, Fiber Laser Sources and Amplifiers IV; (1993) https://doi.org/10.1117/12.141124
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

A composite-EDFA configuration which incorporates an optical isolator has been investigated theoretically and experimentally. The isolator prevents the build-up of the backward-ASE and results in an amplifier with high gain and near-quantum-limited noise figure (NF). The optimum position of the isolator has been calculated as a function of the pump power so that minimum NF and maximum gain are achieved simultaneously. It is shown that under practical pump powers, the optimized composite EDFA exhibits a gain improvement of about 5 dB and a NF reduction in excess of 1.5 dB when compared with an optimized conventional EDFA. Finally, a high-gain composite EDFA has been experimentally demonstrated which exhibits a gain of 51 dB and NF of 3.1 dB for only 45 mW of pump power.

Citation Download Citation

Michalis N. Zervas, Richard Ian Laming, and David N. Payne "Efficient erbium-doped fiber amplifiers incorporating an optical isolator", Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); https://doi.org/10.1117/12.141124

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