Gain flattening fibre filters using phase-shifted long period fibre gratings

Gain flattening fibre filters using phase-shifted long period fibre gratings

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The transmission characteristics of phase-shifted long period gratings (LPGs) are examined theoretically by a combination of coupled-mode theory and transfer matrix formulation. It is shown that the transmission spectrum of such a grating can be significantly controlled by the phase shift which allows the shape of the spectrum to be tailored to meet the requirements of many kinds of gain flattening. By choosing the phase shift and the index change appropriately, a phase-shifted LPG is designed to flatten the spectrum of an Er:silica superfluorescent fibre source.


    1. 1)
      • Wysocki, P.F., Judkins, J.B., Espindola, R., Andrejco, M., Vengsarkar, A.M., Walker, K.: `Erbium-doped fiber amplifierflattened beyond 40 nm using long-period grating', PD2, Proc. Conf. Optic. Fiber Commun., OFC '97, 1997.
    2. 2)
      • M. Wilkinson , A. Bebbington , S.A. Cassidy , P. McKee . D-fibre filter for erbium gain spectrum flattening. Electron. Lett. , 131 - 132
    3. 3)
      • 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
    4. 4)
      • C. Narayanan , H.M. Presby , A.M. Vengsarkar . Band-rejection fibre filter using periodic core deformation. Electron. Lett. , 280 - 281
    5. 5)
      • K.O. Hill , B. Malo , K.A. Vineberg , F. Bilodeau , D.C. Johnson , I. Skinner . Efficient mode conversion in telecommunication fibre using externallywritten gratings. Electron. Lett. , 1270 - 1272
    6. 6)
      • F. Bilodeau , K.O. Hill , B. Malo , D. Johnson , I. Skinner . Efficient narrowband LP01–LP02 mode convertorsfabricated in photosensitive fibre: Spectral response. Electron. Lett. , 682 - 684
    7. 7)
      • Vengsarkar, A.M., Lemaire, P.J., Jacobovitz-Veselka, G., Bhatia, V., Judkins, J.B.: `Long-period fiber gratings as gain-flattening and laser stabilizing devices', Proc. IOOC '95, June 1995, Hong Kong, postdeadline paper PD1–2.
    8. 8)
      • Vengsarkar, A.M., Lemaire, P.J., Judkins, J.B., Ithatia, V., Erdogan, T., Sipe, J.E.: `Long-period fiber gratings as hand-rejection filters and spectral shape-shifters', PD4, OFC '95, OSA Tech. Dig. Series, 1995, 8.
    9. 9)
      • H.G. Unger . (1997) Planar optical waveguides and fibres.
    10. 10)
      • A.W. Snyder , J.D. Love . (1983) Optical waveguide theory.

Related content

This is a required field
Please enter a valid email address