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Proposal of all-optical wavelength-selective switching using waveguide-type Raman amplifiers and 3-dB couplers

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2 Author(s)
Kishikawa, H. ; Dept. of Inf. & Comput. Sci., Toyohashi Univ. of Technol., Japan ; Goto, N.

We propose a new optical switch that can enable wavelength-selective high-speed switching for applications to photonic wavelength-division multiplexing (WDM) Internet protocol (IP) packet routing. The switch utilizes characteristics of waveguide-type Raman amplifiers and 3-dB couplers, and so it operates all-optically at a few tens of picosecond or faster speed. The operation of the switch is studied by coupled-mode theory and is verified numerically using a beam-propagation method (BPM). As a result, we found that optical waves having arbitrary wavelengths among those of incident WDM waves are amplified and switched when the amplification rate of each waveguide-type Raman amplifier is set to the proper value by pump wave injection. Moreover, the dynamic range over 30 dB was also obtained from the simulation results of the switch.

Published in:

Lightwave Technology, Journal of  (Volume:23 ,  Issue: 4 )

Date of Publication:

April 2005

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