【摘要】：硅基光子學(xué)的發(fā)展使突破微電子技術(shù)瓶頸成為可能,而硅基光子晶體在硅基光子學(xué)中擁有重要地位,將其獨(dú)特的帶隙特性應(yīng)用到光學(xué)器件中,可以使硅基光子器件的性能與集成度得到顯著提高。因此,增強(qiáng)帶隙已成為硅基光子晶體研究的重要部分。本文首先對圓柱連接桿形光子晶體結(jié)構(gòu)進(jìn)行研究,研究結(jié)構(gòu)分為三類:圓柱連接十字桿形光子晶體,圓柱連接斜交叉桿形光子晶體,圓柱連接正交叉桿形光子晶體。分別觀察圓柱半徑和桿的寬度的改變對其歸一化帶寬的影響并得出最優(yōu)結(jié)構(gòu),并且在固定填充比的條件下觀察歸一化帶寬隨結(jié)構(gòu)參數(shù)變化的規(guī)律。然后以銅幣形散射元為基礎(chǔ)構(gòu)建了復(fù)式晶胞正方晶格二維光子晶體,探討了結(jié)構(gòu)參數(shù)對其禁帶特性的影響,調(diào)節(jié)結(jié)構(gòu)參數(shù)(外圓半徑、方孔邊長、介質(zhì)桿寬度和方孔旋轉(zhuǎn)角度)進(jìn)行優(yōu)化,得出最優(yōu)歸一化帶寬,并與銅幣形散射元正方晶格二維光子晶體結(jié)構(gòu)進(jìn)行了對比。最后研究了圓柱打孔形光子晶體,主要分四類:圓柱打一孔形光子晶體,圓柱打兩孔形光子晶體,圓柱打三孔形光子晶體,圓柱打四孔形光子晶體。探討了對稱軸條數(shù)對圓柱打孔形光子晶體的影響�？偠灾�,本文設(shè)計(jì)了多種新型光子晶體結(jié)構(gòu)并對其優(yōu)化以使帶隙增強(qiáng),研究結(jié)果為硅基光子晶體獲得較大的歸一化完全禁帶寬度提供了有效方法,為高性能的硅基光子晶體微腔、波導(dǎo)和濾波等器件的設(shè)計(jì)提供了理論參考。
[Abstract]:The development of silicon-based photonic science makes it possible to break through the bottleneck of microelectronics technology. Silicon-based photonic crystals play an important role in silicon-based photology. The application of its unique band-gap characteristics to optical devices can significantly improve the performance and integration of silicon-based photonic devices. Therefore, enhanced band gap has become an important part of silicon-based photonic crystals. In this paper, the structure of cylindrical connected rod photonic crystal is studied. The structure is divided into three categories: cylindrical connected cross rod photonic crystal, cylindrical connected oblique cross rod photonic crystal, cylindrical connected positive cross rod photonic crystal. The effects of the radius of the cylinder and the width of the rod on the normalized bandwidth are observed respectively, and the optimal structure is obtained, and the variation of the normalized band width with the structural parameters is observed under the condition of fixed filling ratio. Then, based on the copper coin scattering element, the two-dimensional photonic crystal of the square lattice of the compound cell is constructed, and the influence of the structural parameters on the band gap characteristics is discussed. The structural parameters (outer circle radius, square hole edge length, dielectric rod width and square hole rotation angle) are optimized, and the optimal normalization bandwidth is obtained, and the two-dimensional photonic crystal structure of the square lattice of the copper coin scattering element is compared with that of the copper coin scattering element square lattice. Finally, cylindrical punched photonic crystals are studied, which are mainly divided into four categories: cylindrical one-hole photonic crystal, cylindrical punched two-hole photonic crystal, cylindrical three-hole photonic crystal and cylindrical four-hole photonic crystal. The influence of the number of symmetrical axial strips on cylindrical punched photonic crystals is discussed. In a word, a variety of new photonic crystal structures are designed and optimized to enhance the band gap. The results provide an effective method for silicon-based photonic crystals to obtain a large normalized complete band gap, and provide a theoretical reference for the design of high performance silicon-based photonic crystal microcavities, waveguides and filtering devices.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：O734

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