Optical AND/OR gates based on monolithically integrated vertical cavity laser with depleted optical thyristor

집적화된 광 싸이리스터와 수직구조 레이저를 이용한 광 로직 AND/OR 게이트에 관한 연구

Latching optical switches and optical logic gates AND and OR are demonstrated, for the first time, by the monolithic integration of a vertical cavity lasers with depleted optical thyristor structure, which have not only a low threshold current with 0.65 mA. but also a high on/off contrast ratio more than 50 dB. By simple operating technique with changing a reference switching voltage, this single device operates as two logic functions, optical logic AND and OR. The thyristor laser fabricated using the oxidation process achieved a high optical output power efficiency and a high sensitivity to the optical input light.