A 1024-channel fast tunable delay line for ultrafast all-optical TDM networks

Kung Li Deng, Koo Il Kang, Ivan Glask, Paul Prucnal

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


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 2k ×2k 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.

Original languageEnglish (US)
Pages (from-to)1496-1498
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number11
StatePublished - Nov 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


  • Optical fiber communication
  • Optical fiber delay lines
  • Optical signal processing
  • TDMA


Dive into the research topics of 'A 1024-channel fast tunable delay line for ultrafast all-optical TDM networks'. Together they form a unique fingerprint.

Cite this