Phase sensitivity of hollow-core photonic bandgap fiber to internal gas pressure

被引：0

作者：

Cao, Yingchun ^{[1
,2
]}

Yang, Fan ^{[1
]}

Ho, Hoi Lut

Jin, Wei ^{[1
,2
]}

机构：

[1] Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Peoples R China

来源：

23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS | 2014年 / 9157卷

关键词：

pressure sensor; hollow-core photonic bandgap fiber; optical fiber sensor; refractive index; REFRACTIVE-INDEX; MODE;

D O I：

10.1117/12.2059018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Phase sensitivity of the fundamental mode of hollow-core photonic bandgap fiber to gas pressure applied internally to its core is investigated. The measured phase sensitivity for a 95-cm-long fiber is 9.92 rad/kPa, over two orders of magnitude higher than that to external pressure. The large phase sensitivity is attributed mainly to the pressure-induced refractive index change of air inside the fiber core. Such an effect may be exploited for high sensitivity pressure sensing and biochemical and environmental process analysis involving pressure variations.

引用

页数：4

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