本文選題：DWDM系統(tǒng)　切入點：環(huán)諧振腔　出處：《青島大學》2017年碩士論文　論文類型：學位論文

【摘要】：在密集波分復用系統(tǒng)中,對密集信號光進行解復用時,先將信號光分解成信道間隔較大的兩組信號,就無需再對現(xiàn)有濾波器進行升級,從而達到降低整個系統(tǒng)成本的目的。完成這一任務的關鍵器件就是交錯濾波器。本文在分析簡單的環(huán)形濾波器和馬赫-澤德(M-Z)干涉儀型濾波器的工作原理的基礎上,深入探討了關鍵參數(shù)對器件的輸出特性(振幅大小和相位特性)的影響。根據(jù)環(huán)形濾波器的相位特性,我們提出了一種嵌入式微環(huán)諧振腔。這種器件具有獨特的相位特性,研究發(fā)現(xiàn),把這種嵌入式微環(huán)諧振腔與M-Z干涉儀相結合可以實現(xiàn)寬帶濾波。本文提出了一種由嵌入式環(huán)諧振腔和M-Z干涉儀組成的新穎帶通濾波器和交錯濾波器。本文的主要工作為:理論分析了關鍵參數(shù)對單耦合環(huán)和雙耦合環(huán)輸出光譜影響,主要研究了它們的光譜特性和相位特性。并以此結構為基礎,設計了結構簡單,相位特性獨特的嵌入式微環(huán)諧振腔,并分析關鍵參數(shù)對嵌入式微環(huán)諧振腔輸出影響。分析了M-Z干涉儀和微環(huán)諧振器輔助M-Z干涉儀濾波器的輸出特性。利用耦合模理論推導出加入嵌入式微環(huán)諧振腔后M-Z干涉儀濾波器的輸出函數(shù),根據(jù)輸出函數(shù),仿真模擬了這種帶有微環(huán)輔助M-Z干涉儀濾波器的輸出。著重分析了環(huán)長,內(nèi)外環(huán)長度比和耦合系數(shù)對濾波器的影響。根據(jù)輸出端的不同,討論了其在密集型波分復用(DWDM)系統(tǒng)中的應用。文中主要分析了關鍵參數(shù)對該濾波器帶寬大小、中心波長、超窄帶寬、通帶平坦度、旁瓣壓低和帶寬比等性能的影響。通過設計、優(yōu)化參數(shù)之間的搭配,可以得到性能較好的濾波器。最后仿真實驗了實現(xiàn)該器件的具體參數(shù)。該研究成果對諧振環(huán)輔助M-Z型濾波器的應用具有重要指導意義。
[Abstract]:In dense wavelength Division Multiplexing (DWDM) system, when the dense signal light is demultiplexed, the signal light is first decomposed into two groups of signals with large channel intervals, so that the existing filter is not required to be upgraded. In order to reduce the cost of the whole system, the key device to accomplish this task is interleaved filter. This paper analyzes the working principle of simple ring filter and M-Z interferometer filter. The effect of key parameters on the output characteristics (amplitude and phase) of the device is discussed. According to the phase characteristics of the ring filter, an embedded microring resonator is proposed. The study found that, Wideband filtering can be realized by combining this embedded microring resonator with M-Z interferometer. A novel bandpass filter and interleaved filter composed of embedded ring resonator and M-Z interferometer are proposed in this paper. The results are as follows: the influence of key parameters on the output spectra of single and double coupling rings is theoretically analyzed. The spectral and phase characteristics of these resonators are studied. Based on this structure, embedded microring resonators with simple structure and unique phase characteristics are designed. The effect of key parameters on the output of embedded microring resonator is analyzed. The output characteristics of M-Z interferometer and micro-ring resonator auxiliary M-Z interferometer filter are analyzed. The output function of M-Z interferometer filter, According to the output function, the output of the filter with microloop auxiliary M-Z interferometer is simulated. The effects of loop length, internal and external loop length ratio and coupling coefficient on the filter are analyzed. This paper discusses its application in dense wavelength division multiplexing (DWDM) system. The effects of key parameters on the bandwidth, center wavelength, ultra-narrow bandwidth, passband flatness, sidelobe depression and bandwidth ratio of the filter are analyzed. A filter with better performance can be obtained by optimizing the collocation of parameters. Finally, the specific parameters of the device are simulated and tested. The research results have important guiding significance for the application of resonant ring auxiliary M-Z filter.
【學位授予單位】：青島大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN751.2;TN929.1

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本文編號：1610864