Abstract

Supercontinuum extending to visible wavelengths is generated in a hybrid silica nonlinear fiber pumped at 1560nm by a femtosecond, erbium-doped fiber laser. The hybrid nonlinear fiber consists of a short length of highly nonlinear, germano-silicate fiber (HNLF) spliced to a length of photonic crystal fiber (PCF). A 2cm length of HNLF provides an initial stage of continuum generation due to higher-order soliton compression and dispersive wave generation before launching into the PCF. The visible radiation is generated in the fundamental mode of the PCF.

© 2008 Optical Society of America

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References

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N. Nishizawa and J. Takayanagi, J. Opt. Soc. Am. B 24, 1786 (2007).
[CrossRef]

P. S. Westbrook, J. W. Nicholson, and K. S. Feder, Opt. Lett. 17, 2629 (2007).
[CrossRef]

2006 (3)

2005 (3)

2004 (4)

2003 (4)

2002 (1)

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[CrossRef]

D. J. Jones, S. A. Diddams, J. K. Ranka, A. Stenz, R. S. Windeler, J. L. Hall, and S. T. Cundiff, Science 288, 635 (2000).
[CrossRef] [PubMed]

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[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Express (9)

Opt. Lett. (7)

Science (1)

D. J. Jones, S. A. Diddams, J. K. Ranka, A. Stenz, R. S. Windeler, J. L. Hall, and S. T. Cundiff, Science 288, 635 (2000).
[CrossRef] [PubMed]

Other (2)

R. T. Bise and D. J. Trevor, in Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineer Conference, Technical Digest (CD) (Optical Society of America, 2005), paper OWL6.
[PubMed]

G. P. Agrawal, Nonlinear Optics, 2nd ed. (Academic Press, 1995).

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Figures (3)

Fig. 1
Fig. 1

(a) Schematic of the experimental setup. (b) Calculated dispersion curves for the PCFs. (c) Measured splice loss of SMF spliced directly to PCF compared with SMF spliced to the hybrid HNLF-PCF fibers.

Fig. 2
Fig. 2

(a), (b) Continuum measured in the hybrid nonlinear fiber for a 2 cm length of HNLF plus (a) 1 m of PCF1 and (b) 1 m of PCF2. For comparison, the continuum generated in 2 cm of HNLF alone is also shown. (c) Continuum generated in 2 cm HNLF plus 2 cm PCF1. (d) Continuum generation in the hybrid HNLF-PCF1 nonlinear fiber as a function of HNLF length. The length of PCF1 was 25 cm .

Fig. 3
Fig. 3

Results from an NLSE model of continuum generation in the hybrid nonlinear fiber. (a) Continuum generated in the hybrid nonlinear fiber for a length of 0.01 cm HNLF compared with a length of 1.9 cm HNLF. (b) Peak power at launch into PCF and short-wavelength edge of the continuum ( 30 dB point) as a function of HNLF length.

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