Lj. Wang et al., CLOCK AND FRAME SYNCHRONIZATION RECOVERY BASED ON A TERAHERTZ OPTICALASYMMETRIC DEMULTIPLEXER, IEEE photonics technology letters, 10(6), 1998, pp. 881-883
A novel phase-lock type clock recovery technique based on a terahertz
optical asymmetric demultiplexer (TOAD) is proposed. The technique is
compatible with the conventional time-division multiplexing (TDM) timi
ng techniques but does not require the ultrahigh-speed optical detecto
r nor ultrafast electrical components, Further, it can readily be used
to achieve frame synchronization, upon which a complete self-timing d
emultiplexer can be demonstrated.