Abstract
Ultra-small, ultra-low energy and ultra-fast SMZ-type all-optical analog switch, PC-SMZ and digital optical flip-flop, PC-FF, have been investigated by using GaAs-based photonic crystal (PC) waveguides and InAs-based quantum dots (QDs). For this purpose, a topology optimization design method for wide/flat-band PC waveguides and selective-area-growth of QDs using a metal-mask MBE method have been developed. This chapter reviews successful operation of an ultra-low energy (~100fJ) PC-SMZ at an ultra-fast (~ps) speed with a high repetition-rate up to 40 Gb/s. It also reviews successful computational verification of optical bi-stability in the PC-FF with a high repetition-rate up to 40 Gb/s.
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