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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 11 — May. 29, 2006
  • pp: 4928–4934

Spectrally smooth supercontinuum from 350 nm to 3 µm in sub-centimeter lengths of soft-glass photonic crystal fibers.

F. G. Omenetto, N. A. Wolchover, M. R. Wehner, M. Ross, A. Efimov, A. J. Taylor, V. V. R. K. Kumar, A. K. George, J. C. Knight, N. Y. Joly, and P. St. J. Russell  »View Author Affiliations


Optics Express, Vol. 14, Issue 11, pp. 4928-4934 (2006)
http://dx.doi.org/10.1364/OE.14.004928


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Abstract

The conversion of light fields in photonic crystal fibers (PCFs) capitalizes on the dramatic enhancement of several optical nonlinearities. We present here spectrally smooth, highly broadband supercontinuum radiation in a short piece of high-nonlinearity soft-glass PCF. This supercontinuum spans several optical octaves, with a spectral range extending from 350 nm to beyond 3000 nm. The selection of an appropriate propagation-length determines the spectral quality of the supercontinuum generated. Experimentally, we clearly identify two regimes of nonlinear pulse transformation: when the fiber length is much shorter than the dispersion length, soliton propagation is not important and a symmetric supercontinuum spectrum arises from almost pure self-phase modulation. For longer fiber lengths the supercontinuum is formed by the breakup of multiple Raman-shifting solitons. In both regions very broad supercontinuum radiation is produced.

© 2006 Optical Society of America

OCIS Codes
(060.7140) Fiber optics and optical communications : Ultrafast processes in fibers
(320.5550) Ultrafast optics : Pulses
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7140) Ultrafast optics : Ultrafast processes in fibers

ToC Category:
Ultrafast Optics

History
Original Manuscript: April 3, 2006
Revised Manuscript: May 10, 2006
Manuscript Accepted: May 10, 2006
Published: May 29, 2006

Citation
F. G. Omenetto, N. A. Wolchover, M. R. Wehner, M. Ross, A. Efimov, A. J. Taylor, V. V. R. K. Kumar, A. K. George, J. C. Knight, N. Y. Joly, and P. St. J. Russell, "Spectrally smooth supercontinuum from 350 nm to 3 μm in sub-centimeter lengths of soft-glass photonic crystal fibers," Opt. Express 14, 4928-4934 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-11-4928


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References

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  22. For the specific set of measurements presented here we are not able to include data in the 1750-2000 nm region. The presence of supercontinuum in this spectral region has been previously verified in this PCF by the authors [3].
  23. The total average power through the fiber is determined using a thermal head power meter, with NIST traceable calibration and sensitivity in the 250nm-10 μm range (+/- 5% accuracy).
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  25. A. V. Husakou and J. Herrmann, "Supercontinuum generation of higher-order solitons by fission in photonic crystal fibers," Phys. Rev. Lett. 8720, (2001).

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