Birefringent waveguide sensor using a polarizer rotating technique

被引：5

作者：

Son, Geun-Sik ^{[2
]}

Kim, Woo-Kyung ^{[1
]}

Yang, Woo-Seok ^{[1
]}

Lee, Hyung-Man ^{[1
]}

Lee, Han-Young ^{[1
]}

Lee, Sung-Dong ^{[3
]}

Jeong, Woo-Jin ^{[4
]}

Kwon, Soon-Woo ^{[5
]}

Kim, Ye-na ^{[6
]}

Lee, Sang-Shin ^{[2
]}

机构：

[1] Korea Elect Technol Inst, Songnam, South Korea

[2] Kwangwoon Univ, Dept Elect Engn, Seoul, South Korea

[3] Infopia Co Ltd, Biosensor Team, Anyang, Kyunggi, South Korea

[4] Univ Seoul, Dept Elect Engn, Seoul, South Korea

[5] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon, South Korea

[6] Korea Aerosp Univ, Dept Mat Engn, Goyang City, Gyeonggi Do, South Korea

来源：

OPTICS LETTERS | 2009年 / 34卷 / 13期

关键词：

INTERFEROMETER;

D O I：

10.1364/OL.34.002045

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A birefringence measurement system is introduced to get high phase resolution for detection of low contents of biochemicals. By using a fixed quarter-wave plate and a rotating polarizer, the phase difference between two orthogonal polarizations is transformed into phase delay of output sinusoidal signal. Analyzing the Output phase, birefringence change could be detected with a phase noise of 0.14 degrees. As well as the birefringence measurement system, an optical evanescent waveguide sensor was developed. A rib-type silica waveguide overlaid with TiO(2) film was fabricated, and a developed birefringence measurement technique was employed in evaluating a refractive index change on waveguide surface. For the fabricated waveguide With a 40-nm-thick TiO(2) film, experiment results showed that the minimum detectable index change was 5.9 X 10(-7). (C) 2009 Optical Society of America

引用

页码：2045 / 2047

页数：3

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