本文選題：垂直腔面發(fā)射激光器(VCSELs) + 帶寬��； 參考：《西南大學(xué)》2017年碩士論文

【摘要】：混沌保密通信是近年來發(fā)展起來的一種新型保密通信技術(shù),這種通信系統(tǒng)利用混沌信號作為載波,將傳輸信號隱藏在混沌載波中,在接收端利用混沌同步特性解調(diào)出所傳輸?shù)男畔?它可實現(xiàn)信息的物理層加密,因而在信息安全領(lǐng)域展現(xiàn)出了巨大的發(fā)展?jié)摿�。特別的,半導(dǎo)體激光器因在光反饋、光電反饋、光注入等外部擾動下易輸出混沌信號而成為混沌同步通信系統(tǒng)理想的混沌光源。與普通的邊發(fā)射半導(dǎo)體激光器(EELs)相比,垂直腔面發(fā)射激光器(VCSELs)具有體積小、閾值電流低、發(fā)散角小、可實現(xiàn)單縱模光輸出、易與光纖耦合、易集成等優(yōu)點,且在適當(dāng)?shù)臈l件可輸出兩個偏振分量,因而基于VCSELs的混沌保密通信為變成了近年來的研究熱點之一。目前基于VCSEL混沌光源的研究主要集中在通過增加混沌載波的帶寬以提高通信系統(tǒng)的傳輸容量或提高混沌信號的復(fù)雜度以增加通信的安全性等方面。然而,同時考慮VCSEL混沌同步通信系統(tǒng)中混沌光源的帶寬和安全性的研究相對較少。因此,尋求一種能同時增加系統(tǒng)有效帶寬和提高系統(tǒng)安全性的通信方案具有重要的實際價值。本文提出了一種帶光反饋的垂直腔面發(fā)射激光器(I-VCSEL)單向注入到另一個VCSEL(D-VCSEL)獲得了寬帶混沌信號,然后用這個寬帶混沌信號驅(qū)動兩個互耦合垂直腔面發(fā)射激光器(MC-VCSELs)實現(xiàn)雙通道、寬帶寬、高復(fù)雜度的混沌同步方案�；谧孕崔D(zhuǎn)模型(SFM),利用有效帶寬計算方法、排列熵和互相關(guān)函數(shù)數(shù)值研究了DVCSEL注入MC-VCSELs的強度以及MC-VCSELs之間的互注入強度對系統(tǒng)輸出混沌信號的帶寬、復(fù)雜度及同步性能的影響。研究結(jié)果表明:通過合理選取D-VCSEL注入到MC-VCSELs的強度以及MC-VCSELs之間的互注入強度,MC-VCSELs每個偏振分量可輸出帶寬達30GHz、排列熵大于0.98的寬帶寬、高復(fù)雜度的混沌信號。在考慮系統(tǒng)的同步性能后,我們確定了一個能同時實現(xiàn)寬帶寬、高復(fù)雜度、高質(zhì)量混沌同步的優(yōu)化參數(shù)空間。激光器的內(nèi)部參數(shù)失配對系統(tǒng)的同步性能有影響,與光場衰減率κ、線寬增強因子α和總的載流子衰減速率γ相比,混沌光注入互耦VCSELs的同步性能對自旋反轉(zhuǎn)速率γs和有源介質(zhì)雙折射系數(shù)γ_p的失配有更好的容忍性。
[Abstract]:Chaotic secure communication is a new kind of secure communication technology developed in recent years. This communication system uses chaotic signal as carrier and hides the transmission signal in chaotic carrier. The information transmitted by the receiver is demodulated by chaotic synchronization. It can encrypt the information in the physical layer, so it shows great development potential in the field of information security. In particular, semiconductor lasers can easily output chaotic signals under external disturbances such as optical feedback, optoelectronic feedback, optical injection and so on, so they become the ideal chaotic light source for chaotic synchronous communication systems. Compared with the conventional side emitting semiconductor laser (EELs), Vertical cavity Surface emitting Laser (VCSELs) has the advantages of small volume, low threshold current, small divergence angle, easy coupling with optical fiber, easy integration and so on. And two polarization components can be output under appropriate conditions, so the chaotic secure communication based on VCSELs has become one of the research hotspots in recent years. At present, the research of chaotic light source based on VCSEL mainly focuses on increasing the transmission capacity of communication system or increasing the complexity of chaotic signal to increase the security of communication by increasing the bandwidth of chaotic carrier. However, the study of bandwidth and security of chaotic light source in VCSEL chaotic synchronous communication system is relatively rare. Therefore, it is of great practical value to seek a communication scheme that can increase both the effective bandwidth and the security of the system. In this paper, a vertical cavity surface emitting laser (I-VCSEL) with optical feedback is proposed to obtain wideband chaotic signals by unidirectional injection into another VCSEL (D-VCSEL). Then two mutually coupled vertical cavity surface-emitting lasers (MC-VCSELs) are driven by this wideband chaotic signal to realize two channels. Wide bandwidth, high complexity chaotic synchronization scheme. Based on the spin reversal model (SFM), the permutation entropy and cross-correlation function are used to calculate the effective bandwidth. The effects of the intensity of DVCSEL injection into MC-VCSELs and the mutual injection intensity between MC-VCSELs on the bandwidth, complexity and synchronization performance of the chaotic signal are studied. The results show that the intensity of D-VCSEL injection into MC-VCSELs and the mutual injection intensity between MC-VCSELs and MC-VCSELs can output a bandwidth of 30 GHz per polarization component, and a wide band of chaotic signals with a permutation entropy greater than 0.98 and a high complexity by selecting the D-VCSEL injection intensity into MC-VCSELs. After considering the synchronization performance of the system, we determine an optimal parameter space that can simultaneously achieve broadband wide, high complexity and high quality chaotic synchronization. The internal parameter mismatch of the laser has an effect on the synchronization performance of the system, compared with the optical field attenuation rate 魏, the linewidth enhancement factor 偽 and the total carrier attenuation rate 緯. The synchronization performance of chaotic optical injection mutual coupling VCSELs has better tolerance to the mismatch of spin inversion rate 緯 s and active medium birefringence coefficient 緯 s p.
【學(xué)位授予單位】：西南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：O415.5;TN248

【參考文獻】

相關(guān)期刊論文 前10條

1 胡漢平;陳笑風(fēng);蘇威;謝飛龍;高孝婧;;基于光電反饋延遲的多點耦合混沌同步和通信[J];光學(xué)學(xué)報;2014年04期

2 劉玉金;張勝海;楊華;譚建鋒;;光反饋垂直腔面發(fā)射半導(dǎo)體激光器的混沌驅(qū)動同步在保密通信中的應(yīng)用[J];中國激光;2012年09期

3 郭園園;武媛;王云才;;Method to identify time delay of chaotic semiconductor laser with optical feedback[J];Chinese Optics Letters;2012年06期

4 操良平;鄧濤;林曉東;吳加貴;夏光瓊;吳正茂;;光反饋分布反饋半導(dǎo)體激光器的非線性動力學(xué)動態(tài)行為[J];中國激光;2010年04期

5 顏森林;;光注入半導(dǎo)體激光器分岔與周期研究[J];光學(xué)學(xué)報;2009年04期

6 王云才;;混沌激光的產(chǎn)生與應(yīng)用[J];激光與光電子學(xué)進展;2009年04期

7 顏森林;All-optical chaotic MQW laser repeater for long-haul chaotic communications[J];Chinese Optics Letters;2005年05期

8 顏森林,遲澤英,陳文建;激光混沌同步及其在光纖保密通信中的應(yīng)用[J];中國科學(xué)E輯:信息科學(xué);2004年04期

9 蔡覺平,李贊,宋文濤;一種混沌偽隨機序列復(fù)雜度分析法[J];物理學(xué)報;2003年08期

10 趙耿,鄭德玲,張亦舜;混沌學(xué)及混沌電子學(xué)的發(fā)展[J];原子能科學(xué)技術(shù);2002年03期

相關(guān)博士學(xué)位論文 前1條

1 張祥偉;高功率垂直腔面發(fā)射激光器的偏振控制[D];中國科學(xué)院研究生院（長春光學(xué)精密機械與物理研究所）;2013年

相關(guān)碩士學(xué)位論文 前1條

1 張鑫;基于半導(dǎo)體環(huán)形激光器的混沌光通信系統(tǒng)關(guān)鍵技術(shù)的研究[D];電子科技大學(xué);2013年

，

本文編號：2072610