提出一种基于纤芯失配的光纤倏逝波甲烷传感器。

An optical fiber evanescent wave methane gas sensor based on core diameter mismatch is reported.

利用纤芯和包层中的折射率分布实现光传输控制等先进技术被认为是第三代显微学中的激光技术。

The third generation techniques such as light propagation control achieved by refractive index distribution in core and clad are promising.

表壳直径：43毫米。

Case diameter: 43 mm.

研究表明良好的预制棒加工质量可有效改善光纤纤芯与包层的界面状态，并且相对于纤芯玻璃来说，粘度较高的包层玻璃其加工质量对界面缺陷的影响更为显著。

Compared with core glass, the effect of optical processing quality of cladding glass on interface defects was more evident when its viscosity at drawing temperature was higher tha.

论及了骨架式光缆与其它大芯数光缆在装纤密度、工程安装、机械性能等方面的优势，同时阐明骨架式光缆的发展前景。

This paper described slotted core cable's advantage on fiber density, engineering installation and mechanical property compared with other high-count fiber cable and its development prospect.