Wavelength conversion of a 40-Gb/s RZ-DPSK signal using four-wave mixing in a dispersion-flattened highly nonlinear photonic crystal fiber

Wavelength conversion of a 40-Gb/s return-to-zero differential phase-shift keying signal is demonstrated in a highly nonlinear photonic crystal fiber (HNL-PCF) for the first time. A conversion efficiency of -20 dB for a pump power of 23 dBm and a conversion bandwidth of 31 nm, essentially limited by...

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Bibliographic Details
Published in:IEEE photonics technology letters 2005-09, Vol.17 (9), p.1908-1910
Main Authors: Andersen, P.A., Tokle, T., Yan Geng, Peucheret, C., Jeppesen, P.
Format: Article
Language:English
Subjects:
Amplifiers
Bandwidth
Conversion
Crystal fibers
Differential phase-shift keying (DPSK)
Differential quadrature phase shift keying
Fiber nonlinear optics
Four-wave mixing
four-wave mixing (FWM)
highly nonlinear (HNL) fiber
Nonlinearity
Optical interferometry
Optical pumping
Optical receivers
Optical wavelength conversion
photonic crystal fiber (PCF)
Photonic crystal fibers
Photonic crystals
Semiconductor optical amplifiers
wavelength conversion
Wavelengths
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Summary:Wavelength conversion of a 40-Gb/s return-to-zero differential phase-shift keying signal is demonstrated in a highly nonlinear photonic crystal fiber (HNL-PCF) for the first time. A conversion efficiency of -20 dB for a pump power of 23 dBm and a conversion bandwidth of 31 nm, essentially limited by the gain bandwidth of erbium-doped fiber amplifiers, are obtained in only 50-m dispersion-flattened HNL-PCF with nonlinear coefficient equal to 11 W/sup -1//spl middot/km/sup -1/. This experiment demonstrates the potential of four-wave mixing in HNL-PCF as a modulation format and bit rate transparent wavelength conversion mechanism in future high-speed systems.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.853275