【摘要】：光纖通信波段的全光纖量子關(guān)聯(lián)光源因其與光纖通信系統(tǒng)良好的兼容性、小型、便攜等優(yōu)良特性受到廣泛關(guān)注。本文以量子關(guān)聯(lián)光源的實用化和小型化為目的,結(jié)合光纖通信系統(tǒng)對量子關(guān)聯(lián)光源的要求,研制了通信波段的多通道全光纖量子關(guān)聯(lián)光源。論文的主要內(nèi)容如下:1、介紹了量子關(guān)聯(lián)光源的研究現(xiàn)狀及趨勢,指出泵浦源和非線性介質(zhì)光纖對全光纖化量子關(guān)聯(lián)光源的影響。2、介紹了光纖制備關(guān)聯(lián)光子對的理論基礎(chǔ),包括光子對產(chǎn)生的基礎(chǔ)——自發(fā)四波混頻效應(yīng)和光纖中影響關(guān)聯(lián)光源質(zhì)量的其他因素。從量子角度出發(fā),給出了關(guān)聯(lián)光源重要參數(shù)表達(dá),為實驗研究關(guān)聯(lián)光子對特性做鋪墊。3、實驗搭建了通信波段的多通道全光纖量子關(guān)聯(lián)光源,并對其輸出特性進(jìn)行研究。該部分介紹了實驗裝置和實驗結(jié)果,分析了量子關(guān)聯(lián)光源的純度。針對實驗室已有的一臺便攜式量子關(guān)聯(lián)光源的不足之處,本文進(jìn)行了以下幾點改進(jìn)。首先,量子關(guān)聯(lián)光源輸出通道擴(kuò)展至多通道,信號/閑頻通道中心波長分別為:1567.13nm/1554.13nm和1569.59nm/1551.72nm。其次,利用非線性系數(shù)更高的高非線性光纖代替色散位移光纖,縮短了光纖使用長度,減少占用空間,減小了光源體積。最后,自搭建鎖模光纖激光器,提高了關(guān)聯(lián)光源泵浦脈沖的重復(fù)頻率,達(dá)到41MHz。實驗結(jié)果驗證了四個通道輸出光子的關(guān)聯(lián)特性,實現(xiàn)了關(guān)聯(lián)光源的多通道輸出。
[Abstract]:All optical fiber quantum correlation light source in optical fiber communication band has attracted much attention because of its good compatibility with optical fiber communication system, small size and portable. Aiming at the practicality and miniaturization of quantum correlation light source and the requirement of optical fiber communication system for quantum correlation light source, a multi-channel all-fiber quantum correlation light source in communication band is developed in this paper. The main contents of this paper are as follows: 1. The research status and trend of quantum correlation light source are introduced. The effects of pump source and nonlinear dielectric fiber on all-fiber quantum correlation light source are pointed out. It includes the basis of photonic pairing-spontaneous four-wave mixing and other factors affecting the quality of correlated light source in optical fiber. From the angle of quantum, the important parameter expression of correlation light source is given, which lays the groundwork for the experimental study of correlation photon pair characteristics. The multi-channel all-fiber quantum correlation light source in communication band is constructed experimentally, and its output characteristics are studied. In this part, the experimental device and experimental results are introduced, and the purity of quantum correlation light source is analyzed. In view of the shortcomings of a portable quantum correlation light source in the laboratory, the following improvements have been made in this paper. Firstly, the output channel of quantum correlation light source is extended to multi-channel. The central wavelength of signal / idle frequency channel is 1 567.13 nm / 1554.13 nm and 1569.59 nm / 1 551.72 nm respectively. Secondly, a high nonlinear fiber with a higher nonlinear coefficient is used instead of a dispersion-shifted fiber, which shortens the length of the fiber, reduces the space and reduces the volume of the light source. Finally, the self-built mode-locked fiber laser improves the repetition rate of the pump pulse of the correlation light source, reaching 41 MHz. The experimental results verify the correlation characteristics of the four channels output photons and realize the multi-channel output of the correlation light source.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.11

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相關(guān)期刊論文 前1條

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本文編號：2199031