Abstract
We demonstrated an all-optical wavelength conversion and multicasting characteristics based on an alloptical
triode using two negative feedback InGaAsP-InP semiconductor optical amplifiers. The output
modulation degree improved from 30 to 60% using fiber Bragg gratings. The wavelength dependence of
the conversion characteristics showed an output modulation degree that exceeded 60% in the range of
1525 to 1543 nm. However, the output modulation degree decreased in longer wavelength from
1557 nm. We performed wavelength conversions using four control signals and measured the bit error
rate characteristics of 2.5 Gbps for each wavelength. Our results show that this device can realize alloptical
multicasting using four channels at the same time.
