Monolithically Integrated Optical Gate 2X2 Matrix Switch Using GaAs/AlGaAs Multiple Quantum Well Structure
A small-size matrix switch is required for constructing large scale optical switching systems. An optical gate matrix switch, which consists of optical splitters, combiners and gates, is suitable for above requirement because of its potential in regard to short device length and non-blocking and point-to-multipoint connections ability. However, this kind of switch reported so far is a hybrid /1/. In the hybrid type of optical gate matrix switch, it has seemed difficult to interconnect optical gates with optical circuits efficiently and to make a large-scale matrix switch. Therefore, monolithic integration of optical circuits and optical gates is indispensable for a small-size optical gate matrix switch and large-scale optical switching networks.
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