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New tapered active fibres for very low noise amplifier applications

New tapered active fibres for very low noise amplifier applications

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© The Institution of Electrical Engineers
Published

A new Er-doped fibre design for low noise amplifier applications is presented. The active fibre is continuously uptapered from the signal input end to the signal output end. Generated amplified spontaneous emission is thus reduced and high gain properties are preserved. Noise figure reductions of more than 0.5dB for copropagating pump and 2.0dB for counterpropagating pump are predicted.

Inspec keywords: optical fibres; fibre lasers; optical communication equipment

Other keywords: low noise amplifier applications; copropagating pump; high gain properties; counterpropagating pump; tapered active fibres; amplified spontaneous emission; Er-doped fibre design

Subjects: Solid lasers; Fibre lasers and amplifiers; Other fibre optical devices and techniques; Optical communication devices, equipment and systems; Optical communication; Fibre optics

References

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      • E. Desurvire , J.L. Zyskind , C.R. Giles . Design optimization for efficient erbium-doped fiber amplifiers. J. Lightwave Technol. , 11 , 1730 - 1741
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      • B. Pedersen , A. Bjarklev , H. Vendeltorp-Pommer , J.H. Povlsen . Erbium doped fibre amplifier: efficient pumping at 807nm. Opt. Commun. , 23 - 26
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      • Bjarklev, A., Lomholt Hansen, S., Hedegaard Povlsen, J.: `Large signal modelling of an erbium doped fibre amplifier', Proc. SPIE '89, September 1989, 1171, p. 118–129.
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      • Payne, D.N., Laming, R.I.: `Optical fibre amplifiers', ThF1, OFC '90, San Francisco, California, USA, p. 331–354, Tutorial.
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