排序方式: 共有29条查询结果,搜索用时 78 毫秒
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光纤涂料对光纤衰减的影响 总被引:1,自引:0,他引:1
分析光纤涂料的厚度、应力松驰、热处理及辐射等对光纤衰减的影响。提出应根据光纤技术要求选择既符合工艺条件又与光纤材料相匹配的涂料,并严格控制涂料厚度和同心度,以保证光纤质量。 相似文献
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可调谐二极管激光吸收光谱法测量气体温度 总被引:2,自引:1,他引:2
研究了一种新型的非接触式测温技术——可调谐二极管激光吸收光谱(TDLAS)测温技术。介绍了温度测量及调制吸收光谱技术原理,分析了调制幅度对气体温度测量的影响。优选了氧气吸收谱线对13163.78 cm-1和13164.18 cm-1,在搭建的高温实验系统上,实现了气体温度和浓度的同时测量。通过分析实测波形获得了谱线13164.18 cm-1在823~1323 K温度范围内的碰撞展宽系数和温度指数。实验结果表明,在823~1323 K温度范围内,系统温度测量的线性误差为0.65%,最大波动为±15 K。 相似文献
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A novel super-resolution near-field optical structure (super-RENS) with bismuth (Bi) mask layer is proposed in this paper. Static optical recording tests with and without super-RENS are carried out using a 650-nm semiconductor laser at recording powers of 14 and 7 mW with pulse duration of 100 ns. The recording marks are observed by high-resolution optical microscopy with a charge-coupled device (CCD) camera. The results show that the Bi mask layer can also concentrate energy into the center of a laser beam at low laser power similar to the traditional Sb mask layer. The results above are further confirmed by another Ar~+ laser system. The third-order nonlinear response induced by the plasma oscillation at the Bi/SiN interface during laser irradiation can be used to explain the phenomenon. The calculation results are basically consistent with our experimental results. 相似文献
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梯度折射率纤维透镜玻璃的研究 总被引:1,自引:0,他引:1
本文对发散型和聚焦型两种纤维透镜玻璃的配方设计、熔制以及离子交换工艺进行了研究。从玻璃结构观点出发,就离子交换问题进行了讨论,最后给出自聚焦面阵的研制结果。 相似文献
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