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In this Letter,a new approach of optical tape for high capacity multilayer data storage is proposed.We show that a length of 5 cm and width of 2 cm of soft and transparent optical tape can be used for two-photon three-dimensional bit data storage.We successfully demonstrate writing and reading of six layers of data storage with a transverse bit separation of 2μm and an axial separation of 2.5μm in a tetraphenylethylene-doped photobleaching polymer.The fluorescence intensity is insensitive to the storage depth of the photopolymer matrix.Thus,the optical tape that we put forward in the experiment can help people realize true large data storage in the future,like magnetic tape.This method significantly paves a novel way for solving big data storage problems. 相似文献
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功率控制技术是3G的核心技术之一。针对常用功率控制技术无具体的实现方法及无具体的SIRo的测量算法等不足,给出了一个改进的实际功率控制方案——反向闭环功控方案及其基于SIR测量的功率控制算法。 相似文献
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云层红外表观辐射模型的研究 总被引:4,自引:0,他引:4
在前人对云层红外辐射与反射模型研究的基础上,建立了导引头实际接收的表观光谱辐射亮度(包含云层辐射和反射、天空背景与路径等效辐射)模型,适用于导引头远离云层以及处于云层中的情况.通过傅里叶光谱辐射计对几种远离云层的中、低云表观辐射亮度进行了实际测量,并与模型计算数据进行对比.结果表明:在3~5μm和8~12μm波段,模型计算与实际测量结果具有较好的一致性,可以用于导引头的模拟分析. 相似文献