[OPTICAL REVIEW Vol. 10, No. 1 (2003) 43-46]
© 2003 The Optical Society of Japan

All-Fiber Wavelength Conversion of Ultra-Fast Signal with Enhanced Extinction Ratio Using Stimulated Raman Scattering

Feroz AHMED* and Naoto KISHI1

Satellite Venture Business Laboratory, Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan

1Department of Information and Communication Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan

(Received March 8, 2002; Accepted November 13, 2002)

We propose a simple method for all-fiber wavelength conversion of ultra-fast signal by means of stimulated Raman scattering. The idea is based on the transference of energy from the signal as pump to a desired signal as first Stokes by stimulated Raman scattering. To minimize the walk-off between two wavelengths, we chose the input signal and the desired output signal wavelengths, equally spaced on opposite sides of the zero dispersion wavelength of the fiber. Based on this assumption, we numerically analyzed the all-fiber wavelength converter for ultra-fast signal with high output power and significantly enhanced output extinction ratio.

Key words: wavelength conversion, all-fiber devices, ultra-fast devices, stimulated Raman scattering, fiber nonlinearities