Abstract
We demonstrated all-optical multicasting characteristics using an all-optical triode. The all-optical
triode, which is a tandem wavelength converter based on the cross-gain modulation of semiconductor
optical amplifiers, enables all-optical signal processing without conventional conversion. The all-optical
triode, which has wavelength conversion characteristics, converts the input signal of a single wavelength
to the wavelength of four different control signals. This device achieves all-optical multicasting using
four channels at the same time. We measured the bit error rate (BER) and the extinction ratio for each
wavelength. As the wavelength of the control light becomes a long wavelength from a short wavelength,
the extinction ratio decreases and the BER increased. Our experimental results show that all-optical
multicasting depends on the SOA gain spectrum corresponding to the wavelength of the control light.
