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Tailoring long period optical fibre gratings for flattening EDFA gain spectra

Tailoring long period optical fibre gratings for flattening EDFA gain spectra

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Loss characteristics of long-period fibre gratings with constant pitch can be made to compensate for a variety of EDFA gain characteristics. Simply by incorporating blank regions within a fixed overall length of grating during its fabrication, the heights of subsidiary maxima and minima can be set at required values.

Inspec keywords: optical fibre amplifiers; diffraction gratings; erbium

Other keywords: gain spectra flattening; long period optical fibre grating; EDFA

Subjects: Fibre lasers and amplifiers; Gratings, echelles; Fibre lasers and amplifiers

References

    1. 1)
      • Hodgson, C.W., Vengsarkar, A.M.: `Spectrally shaped high-power amplified spontaneous emission sources incorporatinglong-period gratings', OFC 96 Tech. Dig., 1996, p. 29–30.
    2. 2)
      • A.M. Vengsarkar , J.R. Pedrazzani , J.B. Judkins , P.J. Lemaire , N.S. Bergano , C.R. Davidson . Long-period fiber-grating-based gain equalizers. Opt. Lett. , 336 - 338
    3. 3)
      • A.M. Vengsarkar , P.J. Lemaire , J.B. Judkins , V. Bhatia , T. Erdogan , J.E. Sipe . Long-period fiber gratings as band-rejection filters. J. Lightwave Technol. , 58 - 65
    4. 4)
      • D.P. Hand , P.St.J. Russell . Photoinduced refractive index changes in germanosilicate fibres. Opt. Lett. , 102 - 104
    5. 5)
      • B.J. Eggleton , P.A. Krug , L. Poladian , F. Ouellette . Long periodic superstructure Bragg gratings in optical fibres. Electron. Lett. , 1620 - 1621
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