基于铒镱共掺纳米晶的1.53μm波长聚合物光波导放大器研究

发布时间：2018-04-29 23:19

本文选题：光波导放大器 + 聚合物　；参考：《吉林大学》2015年硕士论文

【摘要】：光放大器因其在全光中继中的重要作用而成为研究热点，与半导体激光放大器、光纤放大器相比，光波导放大器以小型化，结构紧凑且易与其他光波导器件集成等优势成为颇具研究前景的光放大器。掺铒聚合物光波导放大器同时具备了铒离子在1.55μm通信波段光放大特性和聚合物材料折射率易调节、工艺简单、成本低等两大优势，具有重要的研究意义。本文利用高温热分解法合成了一种表面油酸修饰的NaLuF4:Er3+,Yb3+纳米晶，透射电镜照片显示纳米晶的粒径尺寸约为15nm，纳米晶在980nm波长泵浦光激发下的近红外发射光谱显示材料在1535nm有较强的发射。本文首次将NaLuF4:Er3+,Yb3+纳米晶通过物理掺杂方式掺杂在SU-82005光刻胶中，作为聚合物光波导放大器的有源芯层。利用光刻、显影等工艺制备了矩形结构的光波导放大器，当1535nm波长信号光输入功率为0.1mW，980nm波长泵浦光输入功率为220mW时，在长度为1.8cm的器件上，获得了2.1dB的相对增益。为了避免纳米粒子在聚合物基质中物理掺杂导致的团聚现象，增大纳米粒子在聚合物中的掺杂浓度，提高聚合物光波导放大器的增益及稳定性，我们首次利用NaYF4:Er3+,Yb3+纳米粒子表面修饰层的不饱和官能团与甲基丙烯酸甲酯（MMA）共价键合，合成了一种新型NaYF4: Er3+, Yb3+NPs-PMMA纳米复合材料，用其作为波导有源芯层材料，，设计并制备了具有倒脊型结构的光波导放大器。性能测试结果显示，当980nm波长泵浦光功率为400mW，1535nm信号光功率为0.14mW时，在长度为1.5cm的光波导放大器上获得了最大7.6dB的相对增益，并分析讨论了信号光波长和信号光功率对器件相对增益的影响。
[Abstract]:Optical amplifiers (OPA) have become a research hotspot because of their important role in all-optical relay. Compared with semiconductor laser amplifiers and fiber amplifiers, optical waveguide amplifiers are miniaturized. Compact structure and easy integration with other optical waveguide devices have become promising optical amplifiers. Erbium-doped polymer optical waveguide amplifiers have the advantages of erbium ion optical amplification at 1.55 渭 m and refractive index of polymer materials easy to adjust, simple process and low cost. In this paper, a surface oleic acid modified NaLuF4:Er3 Yb 3 nanocrystalline was synthesized by high temperature thermal decomposition. Transmission electron microscope (TEM) photos show that the size of nanocrystalline is about 15nm.The near infrared emission spectrum of nanocrystalline excited by 980nm wavelength pump light has strong emission in 1535nm. In this paper, NaLuF4:Er3 Yb _ 3 nanocrystalline is first doped in SU-82005 photoresist by physical doping, which is used as the active core layer of polymer optical waveguide amplifier. Optical waveguide amplifiers with rectangular structure have been fabricated by photolithography and development techniques. When the input power of the 1535nm wavelength signal is 0.1mWN 980nm pump light input power is 220mW, the relative gain of 2.1dB is obtained on the device with length 1.8cm. In order to avoid the agglomeration caused by physical doping of nanoparticles in polymer matrix, increase the doping concentration of nanoparticles in polymer, improve the gain and stability of polymer optical waveguide amplifier. For the first time, a novel NaYF4: Er3, Yb3 NPs-PMMA nanocomposite was synthesized by covalently bonding the unsaturated functional group of the surface modification layer of NaYF4:Er3 Yb3 nanoparticles with methyl methacrylate (MMA), which was used as a waveguide active core layer material. An optical waveguide amplifier with inverted ridge structure is designed and fabricated. The performance test results show that when the pump power of 980nm wavelength is 400mWN 1535nm signal optical power is 0.14mW, the maximum relative gain of 7.6dB is obtained in the optical waveguide amplifier with length of 1.5cm. The effects of signal wavelength and signal optical power on the relative gain of the device are analyzed and discussed.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN722

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