20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)

Yumei Yan; Jian Wu; Jintong Lin

doi:10.1117/12.574154

31 January 2005 20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)

Yumei Yan, Jian Wu, Jintong Lin

Proceedings Volume 5624, Semiconductor and Organic Optoelectronic Materials and Devices; (2005) https://doi.org/10.1117/12.574154
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

A scheme for all-optical logic OR based on transparent teraherz optical asymmetric demultiplexer (transparent-TOAD) is proposed in this paper. In the transparent-TOAD, the SOA is biased at transparency and the gain recovery time determined by the intraband effect has the value of only a few picoseconds. Numerical analysis shows that the switching window of the transparent-TOAD is only about 0.54ps and the potential for ultrahigh speed all-optical logic processing is shown. Numerical demonstration is performed for 4-bit and 16-bit logic OR at 20Gbit/s. The results coincide with the OR truth table, showing high extinction ratio and no pattern dependency. Detailed analysis is carried out on the performance of the logic OR scheme.

Citation Download Citation

Yumei Yan, Jian Wu, and Jintong Lin "20Gbit/s all-optical logic OR in terahertz optical asymmetric demultiplexer (TOAD)", Proc. SPIE 5624, Semiconductor and Organic Optoelectronic Materials and Devices, (31 January 2005); https://doi.org/10.1117/12.574154

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KEYWORDS

Logic

Clocks

Switching

Demultiplexers

Transparency

Picosecond phenomena

All optical signal processing

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