Photonic-crystal fiber as a multifunctional optical sensor and sample collector

被引：117

作者：

Konorov, SO ^{[1
]}

Zheltikov, AM

Scalora, M

机构：

[1] Moscow MV Lomonosov State Univ, Ctr Int Laser, Dept Phys, Moscow 119899, Russia

[2] USA, Weap Sci Directorate, Aviat & Missile Command, Huntsville, AL 35898 USA

来源：

OPTICS EXPRESS | 2005年 / 13卷 / 09期

关键词：

D O I：

10.1364/OPEX.13.003454

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two protocols of optical sensing realized with the same photonic-crystal fiber are compared. In the first protocol,diode-laser radiation is delivered to a sample through the central core of a dual-cladding photonic-crystal fiber with a diameter of a few micrometers,while the large-diameter fiber cladding serves to collect the fluorescent response from the sample and to guide it to a detector in the backward direction. In the second scheme, liquid sample is collected by a microcapillary array in the fiber cladding and is interrogated by laser radiation guided in the fiber modes. For sample fluids with refractive indices exceeding the refractive index of the fiber material, fluid channels in photonic-crystal fibers can guide laser light by total internal reflection, providing an 80% overlap of interrogating radiation with sample fluid. (C) 2005 Optical Society of America.

引用

页码：3454 / 3459

页数：6

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