Evaluation and performance enhancement for accurate FBG temperature sensor measurement with different apodization profiles in single and quasi-distributed DWDM systems

Mohammed, Nazmi A.; Ali, Taha; Aly, Moustafa H.

doi:10.1016/j.optlaseng.2013.10.013

Cited by 49 publications

(37 citation statements)

References 17 publications

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“…The length of the used FBG is within the range of 0.1 cm to 1.9 cm and Δn is selected to be between 0.01 x 10 -4 (weak grating) and 14.4 x 10 -4 (strong grating). These values are selected to meet previous literature reviews [11][12][13].…”

Section: Resultsmentioning

confidence: 99%

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Investigating the performance of apodized Fiber Bragg gratings for sensing applications

Ashry

Elrashidi

Mahros

et al. 2014

Proceedings of the 2014 Zone 1 Conference of the American Society for Engineering Education

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Abstract-Fiber Bragg gratings (FBGs) technology has demonstrated its suitability for many applications in recent fiber technologies. Sensing application is one of the main applications of FBGs. In this work, we present a comprehensive investigation for using apodized FBGs in sensing applications. Different evaluation parameters such as, reflectivity, sidelobes, and fullwidth-half-maximum (FWHM) are tested in order to determine the most proper apodization profile for sensors. According to our study, the Blackman apodization gives the best profile that can be used in sensing applications. The reflectivity of Blackman apodization is nearly unity with minimum sidelobes level, -60.3 dB, and narrow FWHM. The length of Blackman apodized FBG is 0.33 cm and Δn = 14.4 x 10 -4 and maximum reflectivity is 99.44%.

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Section: Resultsmentioning

confidence: 99%

“…Though apodization is a well known technique used in many FBG applications, few literature reviews deal with optimizing sensors performance using apodized FBG [11][12][13]. Also, earlier literature studies lack demonstrating the effect of large variety of apodization profiles on the performance of FBGbased sensors.…”

mentioning

confidence: 99%

Investigating the performance of apodized Fiber Bragg gratings for sensing applications

Ashry

Elrashidi

Mahros

et al. 2014

Proceedings of the 2014 Zone 1 Conference of the American Society for Engineering Education

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“…The approach exploits the fact that a Fibre Bragg Grating (FBG) has an inherent sensitivity to strain and temperature, as it is well known that its resonance wavelength is dependent on the effective refractive index of the fibre core and the grating period [9]. Therefore such devices can be used for as the basis of sensor systems for the measurement of strain, temperature, or other measurands simply by monitoring the Bragg wavelength shift.…”

Section: ) Sensor 1 -Physical Sensor -Fibre Bragg Grating (Fbg)-basementioning

confidence: 99%

“…The Bragg wavelength depends on the effective index of refraction of the core and the periodicity of the grating and both of these will be affected by changes in temperature [9]. For the measurement of a constant strain, the shift in the Bragg wavelength can be expressed as:…”

Section: ) Sensor 1 -Physical Sensor -Fibre Bragg Grating (Fbg)-basementioning

confidence: 99%

A Novel Wireless Mobile Platform to Locate and Gather Data From Optical Fiber SensorsIntegrated Into a WSN

et al. 2015

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract-This paper presents a novel design for a wireless mobile platform to locate and gather data from different types of optical fiber sensors, thereby enabling the more effective integration of a number of such optical fiber sensors with an advanced mobile wireless sensor network (WSN). This then more readily permits potential applications, such as monitoring in remote and harsh environments and tracking, exploiting fully the combined advantages offered both by the mobile WSN and the advanced optical fiber sensing technologies. The platform which was designed and implemented consists of an optical fiber sensor module and a smart mobile WSN module, which shows important advantages for mobile sensing and tracking and mesh networking. In this paper, a fiber Bragg gratingbased temperature sensor and an intrinsic pH optical fiber sensor were specially designed and integrated successfully into the optical fiber sensor module as an exemplar to investigate the performance of the integrated system based on the mobile WSN platform. The positive experimental results obtained have confirmed the functionality of the platform designed and demonstrated its capacity for real-time optical fiber sensor data monitoring, processing, and wireless transmission. The successful creation of this type of wireless mobile platform with optical fiber sensors can thus be expected to make an important impact on a number of sectors, where either conventional optical sensor designs or WSNs alone cannot meet the systems requirements. Permanent repository link

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“…An automated MATLAB‐based code has been developed to deal with a higher level of reflectivity and negligible SLL. The proposed approach is based on a new apodization formula that can be customized automatically based on a SLL and full width at half maximum (FWHM), ensuring a superior reflectivity level compared to the apodization profiles proposed by other authors …”

Section: Introductionmentioning

confidence: 99%

Closed‐form expression to optimize the fiber Bragg grating sensor apodization performance

Chaoui

Aghzout

Alejos

et al. 2017

Micro & Optical Tech Letters

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In this article, a new closed‐form apodization expression, which describes the light propagation in fiber Bragg grating sensor (FBGS) according to the design setting of the sensor application, is developed and presented. The main goal of the proposed approach is to optimize the FBGS apodization to enhance the reflected power as long as side lobes are kept in a low level. For this purpose, the coupled mode equations (CME) method has been used with the new apodization formula to customize the light propagation in the FBGS. The new apodization algorithm is processed based on side lobe level (SLL) and full width at half maximum (FWHM) of the FBGS grating spectrum. Further, the developed method has been compared with other apodization profiles presented by other authors. All results show very satisfactory performance of the proposed method.

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Evaluation and performance enhancement for accurate FBG temperature sensor measurement with different apodization profiles in single and quasi-distributed DWDM systems

Cited by 49 publications

References 17 publications

Investigating the performance of apodized Fiber Bragg gratings for sensing applications

Investigating the performance of apodized Fiber Bragg gratings for sensing applications

A Novel Wireless Mobile Platform to Locate and Gather Data From Optical Fiber SensorsIntegrated Into a WSN

Closed‐form expression to optimize the fiber Bragg grating sensor apodization performance

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