We demonstrate a cascaded nonlinear process using pump conversion to 742 nm by four-wave mixing in the normal dispersion regime then continuum generation by modulation instability to generate bright single-mode visible continuum with an average power up to -20 dBm/nm, from a compact 1064 nm infrared source in a monolithic single-mode photonic crystal fibre with a tapered section in one end.

© 2006 Optical Society of America

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  1. J. K. Ranka, R. S. Windeler and A. J. Stentz: "Visible continuum generation in air-silica microstructure optical fibers with anomalous dispersion at 800 nm," Opt. Lett. 25, 25-27 (2000).
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    [CrossRef] [PubMed]

2005 (3)

2004 (3)

2002 (1)

2000 (2)

Biancalana, F.

Birks, T. A.

Champert, P. A.

Chau, A. H. L.

Coen, S.

Cordeiro, C. M. B.

Couderc, V.

Février, S.

Froehly, C.

Harvey, J. D.

Joly, N.

Knight, J. C.

Labonté, L.

Leonhardt, R.

Leon-Saval, S. G.

Leproux, P.

Mason, M. W.

Nérin, P.

Popov, S. V.

Ranka, J. K.

Roy, P.

Russell, P. St. J.

Stentz, A. J.

Taylor, J. R.

Tombelaine, V.

Travers, J. C.

Wadsworth, W. J.

Windeler, R. S.

Witkowska, A.

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

Opt. Express (4)

Opt. Lett. (4)

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Figures (5)

Fig. 1.
Fig. 1.

Schematic for the two-stage visible generation process. 1064 nm laser light enters at X and is converted in the pigtail into 742 nm by four-wave mixing. The 742 nm light at Y is then the pump for continuum generation in the inflated and tapered section. The output continuum is measured in the output fibre at Z. Both input and output sections are endlessly single-mode fibre with a relatively large (5 µm diameter) core.

Fig. 2.
Fig. 2.

Schematic of the inflated and tapered section (top) and scanning electron micrographs (SEMs) for device-A (bottom): (a) initial PCF-A before processing, (b) inflated fibre, (c) taper waist. All of the SEM images are to the same scale.

Fig. 3.
Fig. 3.

Output power spectra (point Z of Fig. 1) for (a) 7 m, (b) 5 m, (c) 3 m, (d) 2 m PCF-A + inflated and tapered section (device-A). False-colour intensity scales in dBm/5nm are the same for all plots.

Fig. 4.
Fig. 4.

Spectra from (a) 3 m bare PCF-A (blue) and B (red), equivalent to point Y on Fig. 1, with average output power 37 mW, (b) device-A(blue) and device-B(red), point Z on Fig. 1, with average output power 30 mW. Note that peaks in the region 350–550 nm in (a) are artefacts of the spectrometer used.

Fig. 5.
Fig. 5.

Output power spectra for l=3 m for (a) device-A, (b) device-B. False-colour intensity scales in dBm/5nm are the same for both plots. Black solid lines are the ZDW of initial fibres (ZDW A, ZDW B) and black dashed lines are the ZDW of inflated sections (ZDW I).