Demonstration of pulse frequency division multiplexing using terahertz optical asymmetric demultiplexer

A. Frenkel, T. G. Chang, I. Glesk, P. R. Prucnal

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A new method of pulse frequency division multiplexing (PFDM) to increase the capacity of local fiber-optic communications networks heavily relies on optical signal processing using an all-optical AND gate. In this letter, we report a conceptual demonstration of the PFDM method using a terahertz optical asymmetric demultiplexer as a fast (picosecond switching time), low switching energy (as low as 125 fJ) optical AND gate for the optical signal processing. This creates a real possibility for the practical realization of the PFDM method.

Original languageEnglish
Pages (from-to)1322-1324
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number9
Publication statusPublished - 1 Sep 1998



  • optical fiber communications
  • optical logical devices
  • pulse frequency-division multiplexing
  • semiconductor optical amplifiers

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