Title		Broadband Wavelength Conversion and Optical Signal Processing by Four-Wave Mixing in An Optical Fiber
Author(s)		Shigeki WATANABE and Shinichi TAKEDA
		Optoelectronic System Laboratory, Fujitsu Laboratories Ltd. 4-1-1 Kamikodanaka, Nakahara-ku, Kawasaki, Kanagawa 211-8588
		(Received February 1, 1999)
Abstract		Four-Wave Mixing (FWM) in an optical fiber and its application to wavelength conversion and all-optical signal processing are described. Highly Nonlinear Dispersion-Shifted Fiber (HNL-DSF) is a promising candidate for realizing a compact and ultra-broadband wavelength converter. A wavelength conversion of over 72 nm is achieved by FWM in a polarization-maintaining HNL-DSF. Simultaneous wavelength conversion and optical phase conjugation of 320 Gb/s (32 x 10 Gb/s) WDM signal between 1.55-m band and 1.58-m band is successfully demonstrated and its possible applications to photonic network are proposed. Possibility of ultra-high speed signal processing using HNL-DSF is shown by all optical 40 Gb/s to 10 Gb/s demultiplexing using 10 GHz clock pulse with a pulse width of 1.5 ps.
Key Words:		Optical fiber, Four-wave mixing, Optical signal processing, Wavelength conversion, Optical phase conjugation

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