Abstract

We demonstrate that an asymmetrical π phase-shifted fiber Bragg grating operated in reflection can provide the required spectral response for implementing an all-optical fractional differentiator. There are different (but equivalent) ways to design it, e.g., by using different gratings lengths and keeping the same index modulation depth at both sides of the π phase shift, or vice versa. Analytical expressions were found relating the fractional differentiator order with the grating parameters. The device shows a good accuracy calculating the fractional time derivatives of the complex field of an arbitrary input optical waveform. The introduced concept is supported by numerical simulations.

© 2009 Optical Society of America

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  1. L. M. Rivas, K. Singh, A. Carballar, and J. Azaña, IEEE Photonics Technol. Lett. 19, 1209 (2007).
    [CrossRef]
  2. M. Kulishov and J. Azaña, in International Symposium on Signals, Systems and Electronics (2007), pp. 617-620.
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    [CrossRef]
  5. M. Kulishov and J. Azaña, Opt. Lett. 30, 2700 (2005).
    [CrossRef]
  6. R. Slavík, Y. Park, M. Kulishov, R. Morandotti, and J. Azaña, Opt. Express 14, 10699 (2006).
    [CrossRef]
  7. M. Kulishov, D. Krcmarík, and R. Slavík, Opt. Lett. 32, 2978 (2007).
    [CrossRef]
  8. M. Yamada and K. Sakuda, Appl. Opt. 26, 3474 (1987).
  9. K. B. Oldham and J. Spanier, The Fractional Calculus (Academic, 1974).

2007 (4)

2006 (1)

2005 (1)

1987 (1)

Azaña, J.

L. M. Rivas, K. Singh, A. Carballar, and J. Azaña, IEEE Photonics Technol. Lett. 19, 1209 (2007).
[CrossRef]

N. Berger, B. Levit, B. Fischer, M. Kulishov, D. Plant, and J. Azaña, Opt. Express 15, 371 (2007).

R. Slavík, Y. Park, M. Kulishov, R. Morandotti, and J. Azaña, Opt. Express 14, 10699 (2006).
[CrossRef]

M. Kulishov and J. Azaña, Opt. Lett. 30, 2700 (2005).
[CrossRef]

M. Kulishov and J. Azaña, in International Symposium on Signals, Systems and Electronics (2007), pp. 617-620.

Berger, N.

Carballar, A.

L. M. Rivas, K. Singh, A. Carballar, and J. Azaña, IEEE Photonics Technol. Lett. 19, 1209 (2007).
[CrossRef]

Fischer, B.

Garcia-Muñoz, V.

Krcmarík, D.

Kulishov, M.

Levit, B.

Morandotti, R.

Muriel, M.

Oldham, K. B.

K. B. Oldham and J. Spanier, The Fractional Calculus (Academic, 1974).

Park, Y.

Plant, D.

Preciado, M.

Rivas, L. M.

L. M. Rivas, K. Singh, A. Carballar, and J. Azaña, IEEE Photonics Technol. Lett. 19, 1209 (2007).
[CrossRef]

Sakuda, K.

Singh, K.

L. M. Rivas, K. Singh, A. Carballar, and J. Azaña, IEEE Photonics Technol. Lett. 19, 1209 (2007).
[CrossRef]

Slavík, R.

Spanier, J.

K. B. Oldham and J. Spanier, The Fractional Calculus (Academic, 1974).

Yamada, M.

Appl. Opt. (1)

IEEE Photonics Technol. Lett. (1)

L. M. Rivas, K. Singh, A. Carballar, and J. Azaña, IEEE Photonics Technol. Lett. 19, 1209 (2007).
[CrossRef]

Opt. Express (3)

Opt. Lett. (2)

Other (2)

M. Kulishov and J. Azaña, in International Symposium on Signals, Systems and Electronics (2007), pp. 617-620.

K. B. Oldham and J. Spanier, The Fractional Calculus (Academic, 1974).

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