In-line refractive index measurement: a simple method based on image detection

被引：0
|
作者：
Bodo, Elisabetta [1 ,2 ]
Gowda, Hitesh G. B.
Wallrabe, Ulrike [2 ]
Wapler, Matthias C. [3 ]
机构：
[1] Univ Pavia, Dept Elect Comp & Biomed Engn, Via Ferrata 5, I-27100 Pavia, Italy
[2] Univ Freiburg, IMTEK Dept Microsyst Engn, Lab Microactuators, Georges Kohler Allee 102, D-79110 Freiburg, Germany
[3] Otto von Guericke Univ, Fac Elect Engn & Informat Technol, Chair Microsyst Med Engn, Magdeburg, Germany
来源：
APPLIED OPTICS | 2023年 / 62卷 / 23期
关键词：
Università degli Studi di Pavia; Ministero dell’Università e della Ricerca; Deutsche Forschungsgemeinschaft (WA 1657/6-2; WA 4555/2-1). The authors thank the Gisela and Erwin Sick Chair of Micro-Optics for use of the refractometer and Professor Sabina Merlo for fruitful discussions on this research;
D O I：
10.1364/AO.493243
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a simple method to determine the refractive index of fluids that is suitable for real-time integrated mea-surements by imaging a collimated beam through a fluid volume and determining its diameter on a CMOS sensor. Our experimental results agree with the prediction of our analytical model, and the resulting refractive index agrees with the measurements obtained with a commercial refractometer with an RMS deviation of just & PLUSMN;0.003. This method requires only inexpensive components: a light source, two lenses, and a camera sensor; it is suitable for real-time monitoring, and it is essentially unlimited in the range of refractive indices. & COPY; 2023 Optica Publishing Group
引用
收藏
页码：6282 / 6286
页数：5
相关论文
共 50 条
  • [21] Refractive Index Measurement Based on Thin-Core Fiber In-Line Mach-Zehnder Interferometer and Differential Intensity Demodulation
    Cai, Xun
    Pan, Pan
    Chen, Sijie
    Wang, Haoran
    Fu, Hongyan
    IEEE PHOTONICS JOURNAL, 2022, 14 (06):
  • [22] Simultaneous Measurement of Refractive Index and Temperature Based on a Peanut-Shape Structure In-Line Fiber Mach-Zehnder Interferometer
    Yu, Fangda
    Xue, Peng
    Zhao, Xiaowei
    Zheng, Jie
    IEEE SENSORS JOURNAL, 2019, 19 (03) : 950 - 955
  • [23] Simultaneous measurement of refractive index and temperature based on bent core-offset in-line fiber Mach-Zehnder interferometer
    Wu, Bingcheng
    Bao, Haiyang
    Zhou, Yanfei
    Liu, Yuan
    Zheng, Jie
    ADVANCED SENSOR SYSTEMS AND APPLICATIONS XI, 2021, 11901
  • [24] Fiber In-Line Mach-Zehnder Interferometer Embedded in FBG for Simultaneous Refractive Index and Temperature Measurement
    Liao, C. R.
    Wang, Ying
    Wang, D. N.
    Yang, M. W.
    IEEE PHOTONICS TECHNOLOGY LETTERS, 2010, 22 (22) : 1686 - 1688
  • [25] Method for refractive index measurement of nanoparticles
    Wang, Zhongyue
    Wang, Ning
    Wang, Dongdong
    Tang, Zihui
    Yu, Kehan
    Wei, Wei
    OPTICS LETTERS, 2014, 39 (14) : 4251 - 4254
  • [26] SIMPLE METHOD OF REFRACTIVE-INDEX PROFILE MEASUREMENT: Q-FIBER METHOD.
    Hoshikawa, Masao
    Suzuki, Shuzo0
    Yoshioka, Naoki
    Tanaka, Gotaro
    1978, E61 (03): : 217 - 219
  • [27] A refractive index sensor based on in-line modal interferometer with waist-enlarge fusion splicing
    Gong, Huaping
    Yang, Pengcheng
    Song, Haifeng
    Ni, Kai
    Dong, Xinyong
    OPTIK, 2015, 126 (21): : 3058 - 3060
  • [28] HIGH-SENSITIVITY REFRACTIVE INDEX SENSORS BASED ON IN-LINE HOLES IN PLASTIC OPTICAL FIBER
    Shin, Jong-Dug
    Park, Jaehee
    MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2015, 57 (04) : 918 - 921
  • [29] A simple method of determining the refractive index of a liquid
    Gladden, SC
    REVIEW OF SCIENTIFIC INSTRUMENTS, 1933, 4 (04): : 231 - 232
  • [30] Theory and use of in-line Refractive Index analyzers for improved process control
    Groetsch, JG
    SICON/01: ISA/IEEE SENSORS FOR INDUSTRY CONFERENCE, PROCEEDINGS, 2001, : 219 - 223
12345