Signal Generation using System on Chip for Coded Fiber Bragg Grating Sensor

Hamzah, Abdulwahhab Essa; Zan, Mohd Saiful Dzulkefly; Elgaud, Mohamed M.; Fadhel, Mahmoud Muhanad; Alwash, Sara Ali; Abushagur, Abdulfatah A. G.; Mokhtar, Mohd Hadri Hafiz; Azeman, Nur Hidayah; Ali, Sawal Hamid Bin Mohd; Bakar, Ahmad Ashrif A

doi:10.1109/icp46580.2020.9206478

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…The undesired increase in the time duration properties and general shape of the filtered signals would impair several of the performance parameters of the coded TDM-FBG sensor. Our ongoing work focuses on merging the hybrid deployment of SG and MM filters and machine learning techniques (ML) in several aspects of Golay coded DOFS [ 36 , 37 ].…”

Section: Discussionmentioning

confidence: 99%

Digital Filtering Techniques for Performance Improvement of Golay Coded TDM-FBG Sensor

Elgaud

Zan

Abushagur

et al. 2021

Sensors

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For almost a half-decade, the unique autocorrelation properties of Golay complementary pairs (GCP) have added a significant value to the key performance of conventional time-domain multiplexed fiber Bragg grating sensors (TDM-FBGs). However, the employment of the unipolar form of Golay coded TDM-FBG has suffered from several performance flaws, such as limited improvement of the signal-to-noise ratio (SNIR), noisy backgrounds, and distorted signals. Therefore, we propose and experimentally implement several digital filtering techniques to mitigate such limitations. Moving averages (MA), Savitzky–Golay (SG), and moving median (MM) filters were deployed to process the signals from two low reflectance FBG sensors located after around 16 km of fiber. The first part of the experiment discussed the sole deployment of Golay codes from 4 bits to 256 bits in the TDM-FBG sensor. As a result, the total SNIR of around 8.8 dB was experimentally confirmed for the longest 256-bit code. Furthermore, the individual deployment of MA, MM, and SG filters within the mentioned decoded sequences secured a further significant increase in SNIR of around 4, 3.5, and 3 dB, respectively. Thus, the deployment of the filtering technique alone resulted in at least four times faster measurement time (equivalent to 3 dB SNIR). Overall, the experimental analysis confirmed that MM outperformed the other two techniques in better signal shape, fastest signal transition time, comparable SNIR, and capability to maintain high spatial resolution.

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Section: Discussionmentioning

confidence: 99%

Digital Filtering Techniques for Performance Improvement of Golay Coded TDM-FBG Sensor

Elgaud

Zan

Abushagur

et al. 2021

Sensors

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“…High quality beam can be produced 7 via fiber lasers platforms along with alignment-free, compact and low-cost structure [30]. 8 In 2017, first identification of mode-locking operation that was based on ReS2-SA was 9 done [113]. By including the D-shaped fiber possessing ReS2-polymer composite, genera-10 tion of mode-locked pulses centered at 1564 nm with pulse duration of 1.25 ps was done 11 as demonstrated in Figure 17a-c.…”

Section: Mode-locked Lasersmentioning

confidence: 99%

“…Numerous distinct characteristics of pulsed lasers like greater peak intensity, broad spectrum, and fast temporal resolution [1] have driven a wide-range of uses like laser welding and drilling [2], ultrafast spectroscopy [3,4], and frequency comb metrology [5,6]. Furthermore, pulsed lasers based on intensity modulation have proven their significant efficiency within a wide variety of distributed optical fiber sensors (DOFS) [7][8][9][10][11]. These kinds of lasers could be produced either by Q-switching or mode-locking methods, which are categorized into passive or active modulation methodologies.…”

Section: Introductionmentioning

confidence: 99%

A Review on Rhenium Disulfide: Synthesis Approaches, Optical Properties, and Applications in Pulsed Lasers

Fadhel

Ali

Rashid

et al. 2021

Preprint

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Rhenium Disulfide (ReS2) has evolved as a novel 2D transition-metal dichalcogenide (TMD) material which has promising applications in optoelectronics and photonics because of its distinctive anisotropic attributes. In this review, we emphasize on formulating saturable absorbers (SAs) based on ReS2 to produce Q-switched and mode-locked pulsed lasers of diverse operation wavelengths like 1 μm, 1.5 μm, 2 μm, and 3 μm. We outline ReS2 synthesis techniques and integration platforms concerning solid-state and fiber-type lasers. We discuss the laser performance based on SAs attributes. Lastly, we draw conclusions and outlook by recommending additional improvements for SA devices so as to advance the domain of ultrafast photonic technology.

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“…Numerous distinct characteristics of pulsed lasers such as greater peak intensity, broad spectrum and fast temporal resolution [1] have driven a wide-range of uses such as laser welding and drilling [2], ultrafast spectroscopy [3,4] and frequency comb metrology [5,6]. Furthermore, pulsed lasers based on intensity modulation have proven their significant efficiency within a wide variety of distributed optical fiber sensors (DOFS) [7][8][9][10][11]. These kinds of lasers could be produced either by Q-switching or mode-locking methods, which are categorized into passive or active modulation methodologies.…”

Section: Introductionmentioning

confidence: 99%

A Review on Rhenium Disulfide: Synthesis Approaches, Optical Properties, and Applications in Pulsed Lasers

et al. 2021

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Rhenium Disulfide (ReS2) has evolved as a novel 2D transition-metal dichalcogenide (TMD) material which has promising applications in optoelectronics and photonics because of its distinctive anisotropic optical properties. Saturable absorption property of ReS2 has been utilized to fabricate saturable absorber (SA) devices to generate short pulses in lasers systems. The results were outstanding, including high-repetition-rate pulses, large modulation depth, multi-wavelength pulses, broadband operation and low saturation intensity. In this review, we emphasize on formulating SAs based on ReS2 to produce pulsed lasers in the visible, near-infrared and mid-infrared wavelength regions with pulse durations down to femtosecond using mode-locking or Q-switching technique. We outline ReS2 synthesis techniques and integration platforms concerning solid-state and fiber-type lasers. We discuss the laser performance based on SAs attributes. Lastly, we draw conclusions and discuss challenges and future directions that will help to advance the domain of ultrafast photonic technology.

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Signal Generation using System on Chip for Coded Fiber Bragg Grating Sensor

Cited by 7 publications

References 3 publications

Digital Filtering Techniques for Performance Improvement of Golay Coded TDM-FBG Sensor

Digital Filtering Techniques for Performance Improvement of Golay Coded TDM-FBG Sensor

A Review on Rhenium Disulfide: Synthesis Approaches, Optical Properties, and Applications in Pulsed Lasers

A Review on Rhenium Disulfide: Synthesis Approaches, Optical Properties, and Applications in Pulsed Lasers

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