Raman amplification in GaP-AlxGa1-xP waveguides for light frequency discrimination

Abstract
Raman amplification characteristics of the GaP-AlxGa1-xP heterostructure waveguide have been measured by fine tuning the pump light frequency. The Raman gain and the Raman gain bandwidth are 0.03 × 10-6 W-1 cm-1 and 23.5 GHz, respectively. The amplified signal light can be detected even at the pump light power level of 10 mW. This result shows that the semiconductor Raman amplifier is suitable for demodulators based on light frequency discrimination in wideband optical communication systems.

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