Fiber-optic sensor measuring spatial distributions of refractive index and temperature

2021 ◽  
Vol 60 (5) ◽  
pp. 1428
Author(s):  
Ivonne Pfalzgraf ◽  
Sergiy Suntsov ◽  
Detlef Kip
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Spatial Distributions ◽  
Optic Sensor

scholarly journals FIBER OPTIC SENSOR FOR THE MEASUREMENT OF CONCENTRATION AND REFRACTIVE INDEX OF LIQUIDS BASED ON INTENSITY MODULATION

2012 ◽  
Vol 06 ◽  
pp. 589-593 ◽  
Author(s):  
A.L. CHAUDHARI ◽  
A. D. SHALIGRAM
Keyword(s):  
Refractive Index ◽  
Ethylene Glycol ◽  
Output Power ◽  
Fiber Optic ◽  
Intensity Modulation ◽  
Fiber Optic Sensor ◽  
Refractive Indices ◽  
Fiber Probe ◽  
Optic Sensor ◽  
Index Changes

This paper reports the use of fiber optic sensor consists of two-fiber probe and reflector for the measurement of concentration and refractive index of liquids based on the reflective intensity modulation. Conventionally such a sensor is used for measuring micro-displacement of fiber tip with reference to the reflector. In one of the previously reported work we have established that if the separation between fiber tips and reflector is maintained constant the same arrangement can be directly used for sensing refractive index changes of medium. The liquid under test fills the gap between probe and reflector. Depending upon the refractive index of liquid, angle of emittance will change which will decide the received output power by receiving fiber. Apart from pure solvents which have different refractive indices, there are mixtures of various types which also alter the refractive index of a given medium. The developed sensor is used to detect the concentration of the alcohols like methanol & ethylene glycol in mixture with water.

scholarly journals Cross-talk free and ultra-compact fiber optic sensor for simultaneous measurement of temperature and refractive index

2009 ◽  
Vol 18 (1) ◽  
pp. 141 ◽  
Author(s):  
Hae Young Choi ◽  
Gopinath Mudhana ◽  
Kwan Seob Park ◽  
Un-Chul Paek ◽  
Byeong Ha Lee
Keyword(s):  
Refractive Index ◽  
Cross Talk ◽  
Simultaneous Measurement ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Optic Sensor

All-fiber optic sensor for measurement of liquid refractive index

2008 ◽  
Vol 148 (1) ◽  
pp. 16-18 ◽  
Author(s):  
P. Nath ◽  
H.K. Singh ◽  
P. Datta ◽  
K.C. Sarma
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Optic Sensor
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