An architecture for TSI-free nonblocking optical TDM switches

作者：Lea Chin Tau^*; Lin Bey Chi; Mounir Hamdi

来源：Journal of Lightwave Technology, 2007, 25(3): 694-702.

DOI：10.1109/JLT.2006.890437

• photonic switching system
• space/time diagrams
• strictly nonblocking (SNB) switches
• time slot interchange (TSI)

One of the key elements in building a time-division-multiplexed (TDM) switch is the time slot interchange (TSI). Given the current optical switching and buffer technologies, TSI-based TDM architectures have many implementation drawbacks, including severe signal attenuation. Some studies showed that some space-time equivalence diagrams can be converted into a delay-unit-based (TSI-free) TDM. This type of architecture is attractive for optical TDM switches, but the techniques discussed in those studies are for rearrangeable switches. Many applications require nonblocking switches where adding a new connection (or a flow) will not cause rearrangement of existing connections. In this paper, we present the design principle for building strictly nonblocking delay-unit-based (TSI-free) optical TDM switches.

• 出版日期2007-3
• 单位香港科技大学