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首页> 外文期刊>Applied optics >Optically heterodyned 25-GHz true-time-delay lines on thick LD-3 polymer-based planar waveguides
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Optically heterodyned 25-GHz true-time-delay lines on thick LD-3 polymer-based planar waveguides

机译：厚的基于LD-3聚合物的平面波导上的光学杂化25 GHz实时延迟线

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Synthesis of the LD-3 electro-optic polymer has resulted in a highly reliable nonlinear organic material. Such a success has been impeded from further progress because the LD-3 films produced thus far are too thin (<0.5 mu m) to form a waveguide. Further details of material synthesis have to be studied to solve this problem. We report the formation of thick LD-3 films ranging from 1.2 to 2.4 mu m by introducing cyclopentanone as the new solvent in polymer synthesis. The formation of multimode planar waveguides on silicon with a waveguide loss of approximately 1.3 dB/cm at 1.3 mu m is demonstrated. Preliminary studies aimed at forming true-time-delay Lines are conducted by use of various waveguide lengths in conjunction with an optical heterodyne technique. Waveguide settings equivalent to different true-time-delay lines with a delay time of up to 0.27 ns and a base bandwidth of 25 GKz are demonstrated with a signal-to-noise ratio of 15 dB. (C) 1997 Optical Society of America.
机译：LD-3电光聚合物的合成产生了高度可靠的非线性有机材料。由于迄今生产的LD-3薄膜太薄（<0.5微米）而无法形成波导，因此无法进一步取得进展就无法取得这种成功。为了解决这个问题，必须研究材料合成的更多细节。我们报道了通过引入环戊酮作为聚合物合成中的新溶剂，形成了厚度范围为1.2至2.4微米的LD-3厚膜。演示了在硅上形成多模平面波导，在1.3微米处的波导损耗约为1.3 dB / cm。通过使用各种波导长度以及光学外差技术，进行了旨在形成实时延迟线的初步研究。演示了等效于不同真实时间延迟线的波导设置，其延迟时间高达0.27 ns，基本带宽为25 GKz，信噪比为15 dB。 （C）1997年美国眼镜学会。

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