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.
Original language | English (US) |
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Pages (from-to) | 1322-1324 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 10 |
Issue number | 9 |
DOIs | |
State | Published - Sep 1998 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering
Keywords
- Optical fiber communications
- Optical logical devices
- Pulse frequency-division multiplexing
- Semiconductor optical amplifiers