Demonstration of pulse frequency division multiplexing using terahertz optical asymmetric demultiplexer

Frenkel, A. and Chang, T. G. and Glesk, I. and Prucnal, P. R. (1998) Demonstration of pulse frequency division multiplexing using terahertz optical asymmetric demultiplexer. IEEE Photonics Technology Letters, 10 (9). pp. 1322-1324. ISSN 1041-1135

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Abstract

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.