【摘要】：隨著國際互聯(lián)網(wǎng)的飛速發(fā)展,許多寬帶業(yè)務應運而生,迫切需要發(fā)展超高速、超大容量的通信系統(tǒng)和計算機處理系統(tǒng)。然而由于電子學的瓶頸效應日趨明顯,全光網(wǎng)(AON)和全光計算成了人們的奮斗目標,其中的關鍵之一就是要實現(xiàn)超高速的全光信號處理。全光邏輯器件是超快全光信號處理技術中的一個關鍵組成部分,其成熟程度直接決定著未來全光網(wǎng)絡的發(fā)展程度。因此,全光邏輯器件的研究成為國內(nèi)外的一個熱點。本文圍繞全光邏輯器件展開了研究�；诜聪蚱肞IN結硅波導中的簡并四波混頻(FWM)效應和非簡并FWM效應,提出了一種開關鍵控(OOK)信號全光邏輯AND門和一種差分相移鍵控(DPSK)信號全光邏輯XOR門方案。建立了基于反向偏置PIN結硅波導的OOK信號全光邏輯AND門和DPSK信號全光邏輯XOR門的理論模型,并對其性能進行了仿真研究。研究結果表明:提出的方案可以實現(xiàn)邏輯AND門和邏輯XOR門。引入反向偏置PIN結,減小自由載流子壽命,提高了全光邏輯門輸出功率;波導長度有最優(yōu)值,使得全光邏輯門輸出功率達到最大值;通過提高信號光功率,減小有效模場面積,能夠提高全光邏輯門輸出功率;兩種全光邏輯門都對波長失諧量不敏感,波長可調(diào)諧范圍寬。本文提出的基于反向偏置PIN結硅波導的全光邏輯門結構簡單,易于集成,輸出效率高,作為全光信號處理技術中的一個關鍵組成部分,可望應用到全光網(wǎng)和全光計算中。
[Abstract]:With the rapid development of the Internet, many broadband services emerge as the times require, and there is an urgent need to develop ultra-high-speed, super-capacity communication systems and computer processing systems. However, due to the increasingly obvious bottleneck effect of electronics, all-optical network (AON) and all-optical computing have become the goal of people, one of the key is to achieve ultra-high speed all-optical signal processing. All-optical logic device is a key component of ultra-fast all-optical signal processing technology. Its maturity directly determines the development of all-optical network in the future. Therefore, the research of all-optical logic devices has become a hot spot at home and abroad. This paper focuses on all optical logic devices. Based on the degenerate four-wave mixing (FWM) effect and non-degenerate FWM effect in the reverse bias PIN junction silicon waveguide, a novel all-optical logic AND gate for critical control (OOK) signal and an all-optical logic XOR gate for differential phase-shift keying (DPSK) signal are proposed. A theoretical model of OOK signal all-optical logic AND gate and DPSK signal all-optical logic XOR gate based on reverse bias PIN junction silicon waveguide is established, and its performance is simulated. The results show that the proposed scheme can realize logical AND gate and logical XOR gate. The reverse bias PIN junction is introduced to reduce the free carrier lifetime and improve the output power of the all-optical logic gate. The waveguide length has an optimal value, which makes the output power of the all-optical logic gate reach the maximum. By increasing the signal optical power, the effective mode field area is reduced. Both optical logic gates are insensitive to wavelength detuning and have a wide wavelength tunable range. An all-optical logic gate based on reverse bias PIN junction silicon waveguide is presented in this paper, which is simple in structure, easy to integrate and high in output efficiency. As a key component of all-optical signal processing technology, it is expected to be applied to all-optical network and all-optical computing.
【學位授予單位】：南京郵電大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN256

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