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首页> 外文期刊>Hormone molecular biology and clinical investigation. >Investigations on Integrated Optical Interference Couplers in PMMA for Visible and Infrared Range Fabricated by “Direct Writing” Excimer Laser Radiation
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Investigations on Integrated Optical Interference Couplers in PMMA for Visible and Infrared Range Fabricated by “Direct Writing” Excimer Laser Radiation

机译：调查在集成光学干涉耦合器在PMMA的可见光和红外线范围“直接写“准分子激光臆造出来的辐射

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Optical waveguides were generated in Polymethylmethacrylate using “direct” laser and contact mask structuring. Excimer laser radiation (248 nm) produced a local refractive index increase thereby achieving light guiding in waveguides with widths from 2 to 15?μ $mu$m. The near field output images were analyzed using visible and infrared laser light. The mode fields of single mode structures were evaluated to elaborate numerically the parameters of the index profile. An index increase up to 0.01 could be achieved using laser pulses at fluences below 0.15 $0.15$ J/cm2 ${textrm{J/cm}^{2}}$. Thus it was possible to design interference couplers of 5 μ $mu$m waveguides width for the visible (635 nm to 670 nm) as well as for the infrared range at 1550 nm. The coupling properties as a function of the waveguide separation and the wavelength is investigated and found compatible with numerical simulations for the structure design. The presented approach allows for designing and fabricating single mode couplers in an efficient and simple manner.
机译：光波导中产生使用“直接”激光和有机玻璃联系掩模结构。(248海里)产生一个本地折射率增加从而实现光指导波导宽度从2到15吗?近场输出的图像进行了分析使用可见光和红外激光。单模结构进行评估精心设计的数值的参数指标概要文件。在下面将通过使用激光脉冲0.15美元0.15美元J / cm2 $ {textrm} {J /厘米^{2}}$。可以设计干涉耦合器5μμm美元波导宽度的可见(635海里为670海里)以及红外范围1550海里。波导分离和波长调查,发现兼容数值模拟的结构设计。提出了对设计和方法允许制作单模光纤耦合器的效率和简单的方式。

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