Raman distributed temperature fiber-optic sensor based on single-mode fiber

2015 ◽  
Author(s):  
Sun Woo Kim ◽  
Min Seong Seo ◽  
Jung Min Hwang ◽  
Bong-Wan Lee ◽  
Min Yong Jeon
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Optic Sensor ◽  
Optic Sensor

Identification of trespasser from the signatures of buried single mode fiber optic sensor cable

2015 ◽  
Author(s):  
Preetam Suman ◽  
Pallavi Gupta ◽  
Philip B. Kassey ◽  
Neera Saxena ◽  
Yogesh Choudhary ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Optic Sensor ◽  
Optic Sensor

scholarly journals Optical Fiber Based Mach-Zehnder Interferometer for APES Detection

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5870
Author(s):  
Huitong Deng ◽  
Xiaoman Chen ◽  
Zhenlin Huang ◽  
Shiqi Kang ◽  
Weijia Zhang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Optic ◽  
External Environment ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Zehnder Interferometer ◽  
Fiber Optic Sensor ◽  
Optic Sensor ◽  
Mach Zehnder Interferometer

A 3-aminopropyl-triethoxysilane (APES) fiber-optic sensor based on a Mach–Zehnder interferometer (MZI) was demonstrated. The MZI was constructed with a core-offset fusion single mode fiber (SMF) structure with a length of 3.0 cm. As APES gradually attaches to the MZI, the external environment of the MZI changes, which in turn causes change in the MZI’s interference. That is the reason why we can obtain the relationships between the APES amount and resonance dip wavelength by measuring the transmission variations of the resonant dip wavelength of the MZI. The optimized amount of 1% APES for 3.0 cm MZI biosensors was 3 mL, whereas the optimized amount of 2% APES was 1.5 mL.

A Micro Total Reflective Extrinsic Fabry-Parot Interferometric Fiber Optic Pressure Sensor for Medical Application

2003 ◽  
Vol 17 (08n09) ◽  
pp. 1199-1204 ◽  
Author(s):  
Jin Seok Heo ◽  
Jung Ju Lee ◽  
Jeong Ok Lim
Keyword(s):  
Thin Film ◽  
Pressure Sensor ◽  
Output Signal ◽  
Fiber Optic ◽  
Medical Instrument ◽  
Applied Pressure ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Optic Sensor ◽  
Optic Sensor

This paper presents the newly designed fiber optic pressure sensor using the TR-EFPI fiber optic sensor with a single mode fiber (SMF), and a micro fabricated diaphragm. The output signal of TR-EFPI fiber optic pressure sensor can be easily analyzed based on the spliced loss based model and large deflection theory. Then, we can design the optimal length between the thin film of diaphragm and the end of single mode fiber. From these analyses, the relation between the applied pressure and the output signal of TR-EFPI fiber optic sensor can be simulated. Based on these processes, we can design the TR-EFPI fiber optic pressure sensor measuring various conditions by changing the size of thin film. As the newly designed TR-EFPI fiber optic pressure sensor can be fabricated in small size and has good sensitivity, it can be applied to medical instrument like pressure sensor and force sensor for catheter and minimally invasive surgery robot for safer surgery.

Research of Coupling Single-Mode Fiber-Optic Vibration Sensor and Experimental Test

2013 ◽  
Vol 405-408 ◽  
pp. 3318-3322 ◽  
Author(s):  
Bin Ma
Keyword(s):  
Fiber Optic ◽  
Experimental System ◽  
Single Mode ◽  
Piezoelectric Sensor ◽  
Single Mode Fiber ◽  
Vibration Sensor ◽  
Fiber Optic Sensor ◽  
Vibration Measurement ◽  
Optic Sensor ◽  
Vibration Tests

A new kind of coupling single-mode fiber-optic sensor is presented and the working theory is discussed. Vibration tests of the sensor are carried out. The vibration experimental system based on cantilever are setup and explained in detail. Dynamic response of coupling single-mode fiber-optic sensor compared with piezoelectric sensor is investigated and the result is excellent. Experimental results show that the coupling single-mode fiber-optic sensor is suitable for vibration measurement practically.

scholarly journals Questions of application of fiber-optic sensors for monitoring crack growth during rock deformations

2021 ◽  
Vol 2140 (1) ◽  
pp. 012037
Author(s):  
V V Yugay ◽  
P Sh Madi ◽  
S B Ozhigina ◽  
D A Gorokhov ◽  
A D Alkina
Keyword(s):  
Optical Fiber ◽  
Fiber Optic ◽  
Single Mode ◽  
Mechanical Action ◽  
Fiber Optic Sensors ◽  
Fiber Optic Sensor ◽  
Mountain Range ◽  
Mining Equipment ◽  
Optic Sensor ◽  
Rock Deformations

Abstract The paper considers ways to solve the problem of developing a system for monitoring displacement in quarries, which are the main main cause of the collapse of boards and berms in quarries. To ensure safety and constant monitoring during work at the quarry, there are chiseled fiber-optic sensors. The fiber-optic sensor is made on the basis of a single-mode optical fiber, which makes it possible to measure the displacements of the mountain range at distances of about 30 km with high accuracy. Laboratory sample a fiber-optic sensor in its work uses a method for monitoring additional losses that occur during mechanical action on an optical fiber. The fiber-optic sensor was made to show a fairly high linearity and accuracy during measurements and can be used to control the deformation of the array after appropriate refinement of its design. This article is aimed at creating means of controlling the process of deformation and displacement of a mountain massif. Ultimately, the results of the study will help prevent accidents associated with the collapse of the sides. Since the growth of cracks in the rocks of the bort mountain massif leads to its sudden collapse and creates a significant danger for personnel, it also causes the failure of mining equipment.

scholarly journals Microscale diamond protection for a ZnO coated fiber optic sensor

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Monika Kosowska ◽  
Paulina Listewnik ◽  
Daria Majchrowicz ◽  
Michał Rycewicz ◽  
Mikhael Bechelany ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Microwave Plasma ◽  
Mechanical Damage ◽  
Chemical Vapor ◽  
Single Mode ◽  
Atomic Layer ◽  
Single Mode Fiber ◽  
Optical Measurements ◽  
Fiber Optic Sensor ◽  
Sensor Structure

Abstract Fiber optic sensors are widely used in environmental, biological and chemical sensing. Due to the demanding environmental conditions in which they can be used, there is a risk of damaging the sensor measurement head placed in the measuring field. Sensors using nanolayers deposited upon the fiber structure are particularly vulnerable to damage. A thin film placed on the surface of the fiber end-face can be prone to mechanical damage or deteriorate due to unwanted chemical reactions with the surrounding agent. In this paper, we investigated a sensor structure formed with a Zinc Oxide (ZnO) coating, deposited by Atomic Layer Deposition (ALD) on the tip of a single-mode fiber. A nanocrystalline diamond sheet (NDS) attached over the ZnO is described. The diamond structure was synthesized in a Microwave Plasma Assisted Chemical Vapor Deposition System. The deposition processes of the nanomaterials, the procedure of attaching NDS to the fiber end-face covered with ZnO, and the results of optical measurements are presented.

scholarly journals An experimental analysis on the performance of single mode-multimode-single mode and multimode- single mode-multimode fiber optic sensor

2019 ◽  
Vol 15 (1) ◽  
pp. 80-84 ◽  
Author(s):  
Hanim Abdul Razak
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Sucrose Solution ◽  
Single Mode ◽  
Cost Effective ◽  
Fiber Optic Sensor ◽  
Superior Performance ◽  
Mode Structure ◽  
Optic Sensor ◽  
Operating Wavelength

A cost effective and simple fabrication process for Mach Zehnder Interferometer (MZI) fiber based sensor has been proposed based on single mode-multimode-single mode structure and multimode-single mode-multimode. These proposed structures employed a standard fusion arc splicing by varying the length of sensing region instead of the structures. This sensor has been experimentally demonstrated for three different concentration of solutions such as water, 1mol sucrose solution and oil with the refractive index of 1.333, 1.384 and 1.464 respectively. Furthermore, the intention of this experiment is to determine which structure that provides superior performance in terms of the sensitivity of the device. The operating wavelength of different structures corresponds to the different refractive index. It is observed that the shifting response was influenced by the length of the sensing-area and the best sensitivity achieved for is -10.45nm/RIU.

scholarly journals Sensitivity Enhancement of Curvature Fiber Sensor Based on Polymer-Coated Capillary Hollow-Core Fiber

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3763 ◽  
Author(s):  
Luis A. Herrera-Piad ◽  
Iván Hernández-Romano ◽  
Daniel A. May-Arrioja ◽  
Vladimir P. Minkovich ◽  
Miguel Torres-Cisneros
Keyword(s):  
Fiber Optic ◽  
High Sensitivity ◽  
Single Mode ◽  
Cost Effective ◽  
Fiber Optic Sensor ◽  
Hollow Core ◽  
Sensing Applications ◽  
Optic Sensor ◽  
Wide Range ◽  
Core Fiber

In this paper, we propose and experimentally demonstrate a simple technique to enhance the curvature sensitivity of a bending fiber optic sensor based on anti-resonant reflecting optical waveguide (ARROW) guidance. The sensing structure is assembled by splicing a segment of capillary hollow-core fiber (CHCF) between two single-mode fibers (SMF), and the device is set on a steel sheet for measuring different curvatures. Without any surface treatment, the ARROW sensor exhibits a curvature sensitivity of 1.6 dB/m−1 in a curvature range from 0 to 2.14 m−1. By carefully coating half of the CHCF length with polydimethylsiloxane (PDMS), the curvature sensitivity of the ARROW sensor is enhanced to −5.62 dB/m−1, as well as an increment in the curvature range (from 0 to 2.68 m−1). Moreover, the covered device exhibits a low-temperature sensitivity (0.038 dB/°C), meaning that temperature fluctuations do not compromise the bending fiber optic sensor operation. The ARROW sensor fabricated with this technique has high sensitivity and a wide range for curvature measurements, with the advantage that the technique is cost-effective and easy to implement. All these features make this technique appealing for real sensing applications, such as structural health monitoring.

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