Abstract

Parabolic pulse generation via Raman amplification is experimentally demonstrated in 5.3 km of non-zero dispersion shifted fiber presenting normal group velocity dispersion at the injected signal pulse wavelength of 1550 nm. The fiber is pumped by a commercially-available continuous wave source at 1455 nm, and the intensity and chirp of the amplifier output are characterized using frequency-resolved optical gating. For 2.4 pJ input pulses of 10 ps duration, the output pulse characteristics are studied as a function of amplifier gain over the range 11–24 dB, allowing the evolution of the input pulse to a parabolic pulse to be clearly seen for amplifier gains exceeding 15 dB. Numerical compression of the output pulses show that near chirp-free pulses can be obtained using only linear chirp compensation.

© 2003 Optical Society of America

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References

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  1. D. Anderson, M. Desaix, M. Karlson, M. Lisak, and M.L. Quiroga-Teixeiro, �??Wave-breaking-free pulses in nonlinear-optical fibers,�?? J. Opt. Soc. Am. B 10, 1185-1190 (1993).
    [CrossRef]
  2. K. Tamura and M. Nakazawa, �??Pulse compression by nonlinear pulse evolution with reduced optical wave breaking in erbium-doped fiber amplifiers,�?? Opt. Lett. 21, 68-70 (1996).
    [CrossRef] [PubMed]
  3. M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey. �??Self-similar propagation and amplifcation of parabolic pulses in optical fibers,�?? Phys. Rev. Lett. 84, 6010-6013 (2000).
    [CrossRef] [PubMed]
  4. V. I. Kruglov, A. C. Peacock, J. M. Dudley, J. D. Harvey, �??Self-similar propagation of high-power parabolic pulses in optical fiber amplifiers,�?? Opt. Lett. 25 1753-1755 (2000).
    [CrossRef]
  5. V. I. Kruglov, A. C. Peacock, J. D. Harvey, J. M. Dudley, �??Self-similar propagation of parabolic pulses in normal dispersion fiber amplifiers,�?? J. Opt. Soc. Am. B 19, 461-469 (2002).
    [CrossRef]
  6. S. Boscolo, S. K. Turitsyn, V. Yu. Novokshenov, J. H. B. Nijhof , �??Self-similar parabolic optical solitary waves,�?? Theoretical and Mathematical Physics 133, 1647-1656 (2002).
    [CrossRef]
  7. J. H. V. Price, W. Belardi, T. M. Monro, A. Malinowski, A. Piper, D. J. Richardson, �??Soliton transmission and supercontinuum generation in holey fiber, using a diode pumped Ytterbium fiber source,�?? Opt. Express 10, 382-387 (2002) <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-8-382">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-8-382</a>.
    [CrossRef] [PubMed]
  8. J. Limpert, T. Schreiber, T. Clausnitzer, K. Zöllner, H. -J. Fuchs, E. -B. Kley, H. Zellmer, and A. Tünnermann, �??High-power femtosecond Yb-doped fiber amplifier,�?? Opt. Express 10 628-638 (2002) <a href=" http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-14-628">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-14-628</a>.
    [CrossRef] [PubMed]
  9. A. C. Peacock, R. J. Kruhlak, J. D. Harvey, J. M. Dudley, �??Solitary pulse propagation in high gain optical fiber amplifiers with normal group velocity dispersion,�?? Opt. Commun. 206, 171-177 (2002).
    [CrossRef]
  10. A. C. Peacock, N. G. R. Broderick, T. M. Monro, �??Numerical study of parabolic pulse generation in microstructured fibre Raman amplifiers,�?? Opt. Commun. 218, 167-172 (2003).
    [CrossRef]
  11. J. M. Dudley, �??Intensity and Chirp Characterization of Highly Distorted Pulses�?? in Frequency Resolved Optical Gating: The Measurement of Ultrashort Laser Pulses," R. Trebino, Kluwer Academic Publishers chapter 15, 305-312 (2000).

http://www.opticsexpress.org/abstract.cf (1)

J. H. V. Price, W. Belardi, T. M. Monro, A. Malinowski, A. Piper, D. J. Richardson, �??Soliton transmission and supercontinuum generation in holey fiber, using a diode pumped Ytterbium fiber source,�?? Opt. Express 10, 382-387 (2002) <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-8-382">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-10-8-382</a>.
[CrossRef] [PubMed]

J. Opt. Soc. Am. B (2)

Opt. Commun. (2)

A. C. Peacock, R. J. Kruhlak, J. D. Harvey, J. M. Dudley, �??Solitary pulse propagation in high gain optical fiber amplifiers with normal group velocity dispersion,�?? Opt. Commun. 206, 171-177 (2002).
[CrossRef]

A. C. Peacock, N. G. R. Broderick, T. M. Monro, �??Numerical study of parabolic pulse generation in microstructured fibre Raman amplifiers,�?? Opt. Commun. 218, 167-172 (2003).
[CrossRef]

Opt. Express (1)

Opt. Lett. (2)

Phys. Rev. Lett. (1)

M. E. Fermann, V. I. Kruglov, B. C. Thomsen, J. M. Dudley, and J. D. Harvey. �??Self-similar propagation and amplifcation of parabolic pulses in optical fibers,�?? Phys. Rev. Lett. 84, 6010-6013 (2000).
[CrossRef] [PubMed]

Theoretical and Mathematical Physics (1)

S. Boscolo, S. K. Turitsyn, V. Yu. Novokshenov, J. H. B. Nijhof , �??Self-similar parabolic optical solitary waves,�?? Theoretical and Mathematical Physics 133, 1647-1656 (2002).
[CrossRef]

Other (1)

J. M. Dudley, �??Intensity and Chirp Characterization of Highly Distorted Pulses�?? in Frequency Resolved Optical Gating: The Measurement of Ultrashort Laser Pulses," R. Trebino, Kluwer Academic Publishers chapter 15, 305-312 (2000).

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Figures (5)

Fig.1.
Fig.1.

(a) Parabolic pulse evolution over 5.3 km in a NZ-DSF Raman amplifier. (b) The top figure shows the simulation output pulse intensity and chirp (solid lines) together with parabolic and linear fits respectively (circles). The bottom figure plots the simulation output (solid line) and parabolic fit (circles) on a logarithmic scale, and also includes gaussian (long dashes) and sech2 (short dashes) fits to illustrate the comparatively poor fits obtained using these pulse shapes compared to a parabolic pulse.

Fig 2.
Fig 2.

Schematic diagram of experimental set-up.

Fig. 3.
Fig. 3.

(a) Measured FROG trace of the amplified output pulses obtained with 0.75 pJ input pulses and 17 dB gain. (b) The retrieved intensity and chirp (circles) compared with the expected results from the numerical simulations described in Section 2 (solid lines).

Fig. 4.
Fig. 4.

Measured FROG traces and retrieved intensity and chirp obtained at the amplifier output for gains of (a) 11.4 dB, (b) 17.7 dB and (c) 20.8 dB. The retrieved intensity and chirp (solid lines) are compared respectively with least-squares parabolic and linear fits (circles), clearly showing the evolution of the amplifier output to a parabolic profile with increasing gain.

Fig. 5
Fig. 5

(a) Pulse duration and spectral width as a function of amplifier gain. (b) Intensity and chirp of compressed pulse obtained after linear chirp compensation of the output parabolic pulse obtained with 20.8 dB gain.

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