Cal Packet Routing System with Optical-label Swapping Incorporating Tuable Wavelength Con- Version and a Uniform-loss Cyclic Frequency Optical-packet Switching and Optical-label Switching Technologies for the next Generation Optical Internet

absence) of signal in the header channels affects the gain of the payload channels. This cross-talk is greatly mitigated at LOA node B, in which the different packets have more uniform power levels. Fig. 5 shows the payload eye diagrams emerging from the SOA node A (top 2 traces) and from the LOA node B (bottom 2 traces). It is evident that channel cross-talk noise in the SOA node A severely deteriorates the high signal lever in the eye diagram. 5. Conclusion We have demonstrated successful routing of 10Gbit/sec optical packets through two complete nodes in the Data Vortex switch using bit-parallel WDM headers. This was facilitated by the use of LOA switching gates, which were shown to significantly reduce cross-talk among the WDM payload data channels. Control signaling between the two nodes was experimentally shown to properly route 10-packet sequences. The unique control mechanism effectively eliminates the need for packet contention resolution within the switch fabric, greatly simplifying the optical implementation of the system. A single chip linear optical amplifier, " PD 13, Proc. of OFC 2001. This paper discusses recent advances in optical-packet switching and optical-label switching technologies. All-optical label swapping techniques, optical-label based packet-switching router systems , and evolution paths from MPLS to optical-label switching networks will be covered. 1. Introduction Optical-packet switching is an attractive technology geared towards integration of data and optical networking. The immense bandwidth provided by optical networking and the capability to switch packets directly at the optical layer are a powerful combination for the Next Generation Internet where scalability, agility, and performance are important considerations. Early optical-packet switching technologies investigated bit-synchronous , fixed size packet switching. More recently, IP-over-optical emerged as a novel concept targeting seamless integration of data and optical networking [1]. In essence, simplifying the conventional open systems interconnection (OSI)