本文選題：環(huán)形諧振器 + 多通道濾波器　； 參考：《哈爾濱工業(yè)大學》2017年碩士論文

【摘要】：近年來隨著人們對于通訊速度無止境的追求,能夠高速傳輸?shù)墓饫w通訊系統(tǒng)得到了人們越來越多的重視。其中的波分復用系統(tǒng)是最核心的技術(shù),而在此之中環(huán)形諧振器以其結(jié)構(gòu)靈活可變,尺寸緊湊,易于調(diào)控等優(yōu)勢成為了人們的新寵。環(huán)形諧振器中的加減濾波器作為多通道波分復用器的基本結(jié)構(gòu),通過對其串聯(lián),平行耦合等方式可以實現(xiàn)多通道濾波。而與之伴隨的是結(jié)構(gòu)的復雜以及控制難度的加大。對于此本文提出了一種新型結(jié)構(gòu)在一定程度上解決這個問題,首先,回顧了環(huán)形諧振器在近些年的發(fā)展以及結(jié)構(gòu)的變化,重點分析了加減濾波器的進展以及在多通道濾波方面的運用。對于目前的國內(nèi)外研究現(xiàn)狀進行分析總結(jié)并提出問題所在。其次,從單環(huán)全通諧振器開始簡單介紹了環(huán)形諧振器的基本理論,并利用數(shù)學方法分析了形成的譜線。分析了加減濾波器的基本結(jié)構(gòu),計算方法以及譜線特征,分析了其相移的變化和諧振點的高相位靈敏度和高色散的特性。接著,提出了一種新型的加減濾波器干涉儀的結(jié)構(gòu),通過對于光路的分析提出了其等效結(jié)構(gòu),介紹了一種對于加減濾波器類結(jié)構(gòu)的計算方法,利用MATLAB對于結(jié)構(gòu)輸出譜線進行了仿真模擬,分析了其兩種輸出線型的原因以及調(diào)控方法,發(fā)現(xiàn)了一種特殊現(xiàn)象并利用實驗對于模擬結(jié)果進行了驗證。最后,設(shè)計了雙通道濾波器的結(jié)構(gòu),給出了計算方法以及輸出方程,通過模擬仿真的方法得到了雙通道輸出的結(jié)果。通過調(diào)控透射系數(shù),衰減因子和相位差可以調(diào)節(jié)通道的帶寬,消光比以及開關(guān)。通過實驗驗證了雙通道的模擬結(jié)果并調(diào)節(jié)相位差得到了通道可重構(gòu)的效果。通過級聯(lián)加減濾波器干涉儀的方式對于雙通道的通道數(shù)目進行了擴展,得到了四通道的類似梳狀濾波器的濾波效果,并且通過調(diào)節(jié)相位實現(xiàn)了四通道的開關(guān)轉(zhuǎn)換。
[Abstract]:In recent years, with the endless pursuit of communication speed, the optical fiber communication system which can transmit at high speed has been paid more and more attention. The wavelength Division Multiplexing (WDM) system is the most important technology, among which the ring resonator has become a new favorite because of its flexible structure, compact size, easy to control and so on. As the basic structure of multichannel wavelength division multiplexer, the addition and subtraction filter in ring resonator can realize multi-channel filter by means of series and parallel coupling. It is accompanied by the complexity of the structure and the increase of the difficulty of control. In this paper, a new type of structure is proposed to solve this problem to a certain extent. Firstly, the development of ring resonator in recent years and the structural changes are reviewed. The progress of addition and subtraction filter and its application in multi-channel filter are analyzed. The current domestic and foreign research status is analyzed and summarized and put forward the problem. Secondly, the basic theory of the ring resonator is introduced simply from the single ring all-pass resonator, and the spectral lines formed are analyzed by mathematical method. The basic structure, calculation method and spectral line characteristics of the additive and subtractive filter are analyzed. The change of phase shift and the characteristics of high phase sensitivity and high dispersion of resonance point are analyzed. Then, the structure of a new type of add-and-subtraction filter interferometer is proposed, and its equivalent structure is proposed by analyzing the optical path. A calculation method for the structure of additive and subtractive filter is introduced. MATLAB is used to simulate the output spectral lines of the structure. The causes of the two output lines and the control methods are analyzed. A special phenomenon is found and the simulation results are verified by experiments. Finally, the structure of the dual-channel filter is designed, the calculation method and the output equation are given, and the results of the two-channel output are obtained by simulation. The bandwidth, extinction ratio and switch of the channel can be adjusted by adjusting the transmission coefficient, attenuation factor and phase difference. The simulation results of the two channels are verified by experiments and the effect of channel reconfiguration is obtained by adjusting the phase difference. The number of two-channel channels is expanded by cascaded add-subtraction filter interferometer, and the filtering effect of four-channel comb-like filter is obtained, and the four-channel switching is realized by adjusting the phase.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN713

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