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Supercontinuum generation at 1.55 µm in a dispersion-flattened polarization-maintaining photonic crystal fiber

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Abstract

We demonstrate the generation of symmetrical supercontinuum of over 40 nm in the 1.55 µm region (1540 – 1580 nm) by injecting 1562 nm, 2.2 ps, 40 GHz optical pulses into a 200 m-long, dispersion-flattened polarization-maintaining photonic crystal fiber. The chromatic dispersion and dispersion slope of the fiber at 1.55 µm are -0.23 ps/km/nm and 0.01 ps/km/nm2, respectively. This is the first report of 1.55 µm band supercontinuum generation in a dispersion-flattened and polarization-maintaining photonic crystal fiber.

©2003 Optical Society of America

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Figures (3)

Fig. 1.
Fig. 1. Micrograph of the center of the PM-PCF.
Fig. 2.
Fig. 2. Chromatic dispersion characteristics of the PM-PCF.
Fig. 3.
Fig. 3. Optical spectra. (a) shows 40 GHz fiber laser output. (b) and (c) show the supercontinuum spectra at the output of PM-PCF with average coupled powers of 25 dBm and 28 dBm, respectively. (d) Longitudinal mode structure around the center wavelength in (c).
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