Multi-hop Optical-label Switching Using Optical 3R Regeneration

This paper experimentally demonstrates the multi-hop operation of an optical-label switching router with label swapping and optical 3R at each hop. A semiconductor optical amplifier based Mach-Zehnder interferometer wavelength converter performs reshaping. A Fabry-Perot filter all-optically recovers the clock from the incoming packets in burst mode. The synchronous modulation through a Mach-Zehnder modulator using the recovered clock performs retiming. The 3R regeneration maintains a good signal quality through multiple hops, which is important for scalable optical networking.