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Gain flattened and improved EDFA using microbending long-period fibre gratings

Gain flattened and improved EDFA using microbending long-period fibre gratings

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© IEE
Published

A new method for flattening the gain spectrum of erbium-doped fibre amplifiers (EDFAs) is proposed. This method is based on microbending long-period fibre gratings, that are simply fabricated by bending the fibre. By adjusting the spectral profiles of the filters mechanically, a gain flatness of <1 dB has been obtained, and gain improvement of <5.32 dB over the 33 nm wavelength range at two different pump powers of 34 and 86 mW, respectively.

Inspec keywords: optical fibre filters; bending; erbium; diffraction gratings; optical fibre amplifiers

Other keywords: erbium-doped fibre amplifier; gain flattening; 86 mW; 34 mW; microbending long-period fibre grating filter

Subjects: Spectral and other filters; Fibre lasers and amplifiers; Gratings, echelles; Optical coatings and filters; Fibre lasers and amplifiers

References

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      • M. Tachibana , R.I. Laming , P.R. Morkel , D.N. Payne . Erbium-dopedfiber amplifier with flattened gain spectrum. IEEE Photonics Technol. Lett. , 2 , 118 - 120
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      • M. Rochette , M. Guy , S. LaRochelle , J. Lauzon , F. Tre'panier . Gain equalization of EDFAs with Bragg gratings. IEEE Photonics Technol. Lett. , 5 , 536 - 538
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      • H.J. Chen , X.L. Yang . Gain flattened erbium-doped fiber amplifier using simple equalizing film. Int. J. Infrared Millim. Waves , 12 , 2107 - 2112
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      • S.H. Yun , H.K. Lee , H.K. Kim , B.Y. Kim . Dynamic erbium-doped fiber amplifier based on active gain flattening with fiber acoustooptic tunable filters. IEEE Photonics Technol. Lett. , 10 , 1229 - 1231
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      • Y.B. Lu , P.L. Chen . Gain flattening by using dual-core fiber in erbium-doped fiber amplifier. IEEE Photonics Technol. Lett. , 12 , 1616 - 1617
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      • P.F. Wysocki , J.B. Judkins , R.P. Espindola , M. Andrejco , A.M. Vengsarkar . Broad-band erbium-doped fiber amplifier flattened beyond 40 nm using long-period grating filter. IEEE Photonics Technol. Lett. , 10 , 1343 - 1345
    7. 7)
      • A. Yu , M.J. O'Mahony , A.S. Siddiqui . Analysis of optical gain enhanced erbium-doped fiber amplifiers using optical filters. IEEE Photonics Technol. Lett. , 7 , 773 - 775
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