173-ps wavelength switching of four WDM channels using an OTDM channel selector

Bing C. Wang, Varghese Baby, Lei Xu, Ivan Glesk, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Ultrafast wavelength switching is demonstrated using an optical time division multiplexing (OTDM) channel selector based on the parallel optical delay line. The OTDM channel selector, capable of rapidly placing 12.5-GHz pulses in any of four timeslot channels in an 80-ps bit period, injects optical pulses into the control port of a TOAD. Four pulses of different wavelengths generated from a 12.5-GHz supercontinuum source are time-interleaved and enter the input port of the terahertz optical asymmetric demultiplexer (TOAD). The resulting system is capable of switching the output wavelengths at the output of the TOAD with an average latency time of 173 ps, and a maximum latency time of 320 ps.

Original languageEnglish (US)
Pages (from-to)1620-1622
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number11
StatePublished - Nov 2002

All Science Journal Classification (ASJC) codes

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


  • Optical delay line
  • Optical time division multiplexing (OTDM)
  • Supercontinuum
  • WDM
  • Wavelength switching


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