Optical fiber long-period grating-based Cu2+ measurement

被引：1

作者：

Dong, SY ^{[1
]}

Liu, YF ^{[1
]}

Tan, XQ ^{[1
]}

Liao, YB ^{[1
]}

Tian, Q ^{[1
]}

Luo, M ^{[1
]}

机构：

[1] State Key Lab Marine Corros & Protect, Qingdao 266071, Peoples R China

来源：

PASSIVE COMPONENTS AND FIBER-BASED DEVICES II, PT 1 AND 2 | 2005年 / 6019卷

关键词：

long period grating; affinity coating; output light power;

D O I：

10.1117/12.629282

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The detection of the change of concentration of cupric ions (Cu2+) by long-period grating (LPG) sensors was presented in this paper. A polymeric affinity coating was chemically attached to the surface of the LPG sensor with reaction times of 4 hours, 8 hours, and 12 hours, which is characterized of its surface appearance by scanning electronic microscope (SEM). By comparing the surface appearance of the polymeric affinity coating, a proper reaction time was chosen as the final experimental condition. The optimal experimental condition was applied to the LPG sensor, which was first dipped into cupric sulfate (CUSO4) solutions of different concentrations and then ethylene diamine tetraacetic acid (EDTA) solution. The intensity changes of typical transmission spectrum with Cu2+ concentrations were studied. Results showed that the intensity-based method of LPG sensor can reflect the change of the output light power and can be used to indicate the concentration of Cu2+.

引用

页码：U579 / U584

页数：6

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