Title :
Proposal of all-optical wavelength-selective switching using waveguide-type Raman amplifiers and 3-dB couplers
Author :
Kishikawa, Hiroki ; Goto, Nobuo
Author_Institution :
Dept. of Inf. & Comput. Sci., Toyohashi Univ. of Technol., Japan
fDate :
4/1/2005 12:00:00 AM
Abstract :
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.
Keywords :
Internet; Raman lasers; coupled mode analysis; high-speed optical techniques; optical couplers; optical pumping; packet switching; photonic switching systems; protocols; semiconductor optical amplifiers; telecommunication network routing; waveguide lasers; wavelength division multiplexing; 3-dB couplers; Internet protocol packet routing; WDM waves; all-optical switching; amplification rate; beam-propagation method; coupled-mode theory; high-speed switching; optical switch; optical waves; photonic wavelength-division multiplexing; pump wave injection; waveguide-type Raman amplifiers; wavelength-selective switching; Couplers; Internet; Optical amplifiers; Optical packet switching; Optical switches; Optical waveguide theory; Optical waveguides; Proposals; Stimulated emission; Wavelength division multiplexing; 3-dB coupler; All-optical; Raman amplifier; finite-difference beam-propagation method (FD-BPM); optical switch; waveguide; wavelength-selective;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.843838
