Measurement of Organic Chemical Refractive Indexes Using an Optical Time-Domain Reflectometer
نویسندگان
چکیده
In this investigation, we propose and experimentally demonstrate a method for measuring the refractive index (RI) of liquid organic chemicals. The scheme is based on a single-mode fiber (SMF) sensor and an optical time-domain reflectometer (OTDR). Here, due to the different reflectance (R) between the SMF and organic liquid chemicals, the reflected power level of the backscattering light (BSL) measured by the OTDR would be different. Therefore, we can measure the RI of chemical under test via the measured BSL level. The proposed RI sensor is simple and easy to manipulate, with stable detected signals, and has the potential to be a valuable tool for use in biological and chemical applications.
منابع مشابه
Otdr Distributed Sensing of Liquid Hydrocarbons Using Polymer-clad Optical Fibers
A distributed sensing system for apolar hydrocarbons is presented which is built from a chemically sensitive polymer-clad silica fiber adapted to an optical time domain reflectometer (OTDR) setup. OTDR measurements allow locating and detecting chemicals by measuring the time delay between short light pulses entering the fiber and discrete changes in the backscatter signals that are caused by lo...
متن کاملA Fiber-Optic Sensor Using an Aqueous Solution of Sodium Chloride to Measure Temperature and Water Level Simultaneously
A fiber-optic sensor system using a multiplexed array of sensing probes based on an aqueous solution of sodium chloride (NaCl solution) and an optical time-domain reflectometer (OTDR) for simultaneous measurement of temperature and water level is proposed. By changing the temperature, the refractive index of the NaCl solution is varied and Fresnel reflection arising at the interface between the...
متن کاملGuidance for OTDR Assessment of Fusion Spliced Single-mode Fibers
This Corning paper explains measurement behaviors of fusion spliced optical fibers and how glass properties and MFD (mode field diameter) differences across fiber splice junctions can lead to erroneous interpretations of splice loss when performing uni-directional OTDR (optical time domain reflectometer) tests. This paper explains how uni-directional OTDR test results yield misleading splice lo...
متن کاملDistributed Humidity Sensing in PMMA Optical Fibers at 500 nm and 650 nm Wavelengths
Distributed measurement of humidity is a sought-after capability for various fields of application, especially in the civil engineering and structural health monitoring sectors. This article presents a method for distributed humidity sensing along polymethyl methacrylate (PMMA) polymer optical fibers (POFs) by analyzing wavelength-dependent Rayleigh backscattering and attenuation characteristic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 12 شماره
صفحات -
تاریخ انتشار 2012