表題番号：2020C-327
日付：2021/04/09
研究課題導波路型光デバイスを用いた光論理演算方法の研究
| 研究者所属（当時） | 資格 | 氏名 | |
|---|---|---|---|
| （代表者） | 理工学術院 大学院情報生産システム研究科 | 准教授 | 高畑 清人 |
- 研究成果概要
- For future all-optical signal processing, a 3×3 multi-mode interferometer(MMI) based optical logic gate is studied by to achieve logic OR, XOR, NAND, XNOR, AND, NOR, and NOT (= seven logics) with a fixed design of the MMI. Due to the operating principle of the MMI, the logic NOR and logic AND are difficult to be achieved only by phase shift keying (PSK) signal or on-off keying (OOK) signal with MMI based optical logic gates. Therefore, a combination between two input signals and reference signal has been investigated in detail by using numerical simulation based on beam propagation method (BPM). The logic operation of the MMI is evaluated using a contrast ratio of output signal “1” to output signal “0”. It has been shown that all seven logic operations are achievable with an identical 3×3 MMI based optical logic gate by adjusting combination between input signals.