Title :
A 1024-channel fast tunable delay line for ultrafast all-optical TDM networks
Author :
Deng, Kung-Li ; Kang, Koo Il ; Glask, I. ; Prucnal, Paul
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
Abstract :
Based on a passive k-stage feed-forward delay line structure, this letter presents a novel scheme which allows fast tuning among as many as 2/sup k//spl times/2/sup k/ ultrafast time-division multiplexed (TDM) channels in all-optical networks. At a lower speed, a simple selection rule is applied at the input and output of the structure to set the state of the delay. In the experimental demonstration, the delay line can be tuned to any of the 1024 50-Mb/s channels in a 50-Gb/s all-optical TDM network with a five-stage structure and two E/O modulators. The average reconfiguration time is about 20 ns.
Keywords :
clocks; electro-optical modulation; high-speed optical techniques; optical delay lines; optical fibre LAN; time division multiplexing; tuning; 1024-channel; 20 ns; 50 Gbit/s; 50 Mbit/s; E/O modulators; Gb/s all-optical TDM network; TDM channels; all-optical networks; average reconfiguration time; fast tunable delay line; fast tuning; five-stage structure; lower speed; passive k-stage feed-forward delay line structure; simple selection rule; ultrafast all-optical TDM networks; ultrafast time-division multiplexed channels; Bandwidth; Delay effects; Delay lines; Feedforward systems; High speed optical techniques; Optical signal processing; Optical transmitters; Optical tuning; Time division multiplexing; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
