Prof. Hairul Azhar Bin Abdul Rashid Profile

Prof. Hairul Azhar Bin Abdul Rashid

Professor at Multimedia Univ

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Author

Publications (10)

Proceedings Article | 31 December 2022 Presentation

Graphene embedded double D-shaped plasmonic sensor for multi-analyte detection

Rakib Haider, Md. Mashrafi, Firoz Haider, Hairul Azhar Bin Abdul Rashid, Rajib Ahmed, Rifat Ahmmed Aoni

Proceedings Volume PC12322, PC123220T (2022) https://doi.org/10.1117/12.2644095

KEYWORDS: Graphene, Sensors, Plasmonic sensors, Gold, Finite element methods, Surface plasmons, Structured optical fibers, Silica, Sensor performance, Refractive index

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Proceedings Article | 31 December 2022 Presentation

Photonic-crystal-fiber-based plasmonic sensor for multi-operational coronavirus detections

Abrar Islam, Firoz Haider, Hima Akter, Hairul Azhar Bin Abdul Rashid, Rajib Ahmed, Rifat Ahmmed Aoni

Proceedings Volume PC12322, PC123220S (2022) https://doi.org/10.1117/12.2642691

KEYWORDS: Sensors, Photonic crystal fibers, Plasmonic sensors, Plasmonics, Metals, Gold, Finite element methods, Refractive index, Polarization, Point-of-care devices

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Proceedings Article | 31 December 2022 Presentation

Dual microchannel-based plasmonic sensor for multi-analyte detection

Hima Akter, Firoz Haider, Abrar Islam, Hairul Azhar Bin Abdul Rashid, Rajib Ahmed, Rifat Ahmmed Aoni

Proceedings Volume PC12322, PC123220R (2022) https://doi.org/10.1117/12.2642680

KEYWORDS: Sensors, Plasmonic sensors, Plasmonics, Surface plasmon polaritons, Structured optical fibers, Sensor performance, Refractive index, Polarization, Photonic crystal fibers, Medical diagnostics

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SPIE Journal Paper | 18 December 2015

Effects of macro-bending on 1500-nm amplified spontaneous emission, gain, and noise figure of erbium-gallium co-doped fiber

Leong Chia Jian, Hairul Azhar Abdul Rashid, Mohd Ridzuan Mokhtar

OE, Vol. 54, Issue 12, 126109, (December 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.12.126109

KEYWORDS: Photons, Ions, Erbium, Fiber amplifiers, Signal attenuation, Optical engineering, Cladding, Optical fibers, Optical filters, Gallium

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Proceedings Article | 7 December 2013 Paper

Assessment of GeB doped SiO2 optical fiber for the application of remote radiation sensing system

A. Alawiah, M. Fadhli, S. Bauk, H. Abdul-Rashid, M. Maah

Proceedings Volume 8923, 89235F (2013) https://doi.org/10.1117/12.2034212

KEYWORDS: Optical fibers, Silica, Synchrotrons, Radiotherapy, Sensing systems, Annealing, In vivo imaging, Germanium, Laser induced fluorescence, Diodes

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The research and development efforts on the silica (SiO₂) optical fiber for application in radiation sensing and other dosimetry field have become quite active. The widely used LiF based dosimeter (TLD) has shown a relatively low reproducibility and there is a time delay in dose assessment which loses its capability as direct real-time dose assessment dosimeters unlike diodes. The macroscopic size of the optical fiber generally does not allow direct in vivo dose sensing in the inner organ for radiotherapy and medical imaging. A flat optical fiber (FF) with nominal dimensions of (0.08 x10 x 10) mm³ of pure silica SiO₂ and GeO₂ with Boron doped silica fiber SiO₂ was selected for this research. The Germanium was used a dopant to enhance the flat optical fiber to reach much higher responsiveness and dose sensitivity in high energy and high dose irradiation. Together with this combination, both TLD dimension and dose assessment issues was hoped to be overcome. The research conducted by comparing the response of pure silica SiO₂ flat optical fiber with a GeO₂ with Boron doped silica SiO₂ flat optical fiber. The FF sample was annealed at 400°C for one hour before irradiated. Kinetic parameters and dosimetric glow curve of TL response and sensitivity were studied with respect to the electron beam of high dose of micro beam irradiation of 1.0 kGy, 5.0 kGy, 10.0 kGy, 50.0 kGy, 100.0 kGy, 500.0 kGy, and 1.0 MGy using Singapore Synchrotron Light Source’s (PCIT) beamline. The PCIT operates at 500mA current with real time current range from 90-100mA, dose rate of 3.03 MGy/hour and energy at 8.9KeV. The source to Source Surface Distance (SSD) was at 6.0 cm, with a field size of 20mm × 8mm diameter of a half circle. The TL response was measured using a TLD reader Harshaw Model 3500. The Time-Temperature-Profile (TTP) of the reader was obtained to a preheat temperature of 150 °C for 5 s, the output signal being acquired at a temperature ramprate of 35 °Cs^-1, acquisition time of 10 s and a maximum temperature of 400 °C each of the FF samples. All reading was taken under N₂ gas flow, suppressing oxidation and potential triboluminescence. The proposed FF shows the excellent TL response for high energy irradiation and good reproducibility and exhibits a very low rate of fading and low variation background signal. From these results, the proposed FF can be used as a radiation dosimeter in remote radiation sensing and favorably compares with the widely used of LiF based dosimeter on common medical radiotherapy application.

Proceedings Article | 3 May 2013 Paper

Radiation dose to radiosensitive organs in PET/CT myocardial perfusion examination using versatile optical fibre

Salasiah M., A. Nordin, A. S. Fathinul Fikri, H. Hishar, N. Tamchek, K. Taiman, A. K. Ahmad Bazli, H. Abdul-Rashid, G. Mahdiraji, R. Mizanur, Noramaliza M. Noor

Proceedings Volume 8775, 87750U (2013) https://doi.org/10.1117/12.2017113

KEYWORDS: Positron emission tomography, Breast, Computed tomography, Eye, Optical fibers, Calibration, Diagnostics, Radioisotopes, Nuclear imaging, Arteries

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Proceedings Article | 3 May 2013 Paper

Thermoluminescence characteristics of flat optical fiber in radiation dosimetry under different electron irradiation conditions

A. Alawiah, A. M. Intan, S. Bauk, H. Abdul-Rashid, Z. Yusoff, M. Mokhtar, W. Wan Abdullah, K. Mat Sharif, G. Mahdiraji, F. Mahamd Adikan, N. Tamchek, N. M. Noor, D. Bradley

Proceedings Volume 8775, 87750S (2013) https://doi.org/10.1117/12.2017209

KEYWORDS: Optical fibers, Silica, Radiotherapy, Radiation dosimetry, Annealing, Calibration, Solids, Physics, Sensors, Targeting Task Performance metric

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SPIE Journal Paper | 1 February 2008

Chromatic dispersion measurement using optical beating null frequency

Hairul Abdul-Rashid, V. Gopinathan, M. Mokhtar, Z. Yusoff, M. Al-Qdah, Faidz Rahman

OE, Vol. 47, Issue 02, 025007, (February 2008) https://doi.org/10.1117/12.10.1117/1.2868776

KEYWORDS: Single mode fibers, Dispersion, Critical dimension metrology, Polonium, Phase conjugation, Mathematical modeling, Optical engineering, Optical testing, Semiconductor optical amplifiers, Signal detection

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SPIE Journal Paper | 1 May 2006

Employing dispersion-flattened fiber for chromatic dispersion measurement

M. Al-Qdah, Hairul Abdul-Rashid, K. Dimyati, Borhanuddin Ali, M. Khazani

OE, Vol. 45, Issue 05, 055005, (May 2006) https://doi.org/10.1117/12.10.1117/1.2205828

KEYWORDS: Critical dimension metrology, Single mode fibers, Dispersion, Photodetectors, Four wave mixing, Signal attenuation, Phase modulation, Optical engineering, Modulation, Data conversion

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Proceedings Article | 8 July 2002 Paper

Novel technique for tandem single sideband communication systems using orthogonal carriers (TSSB-OC)

Hairul Abdul-Rashid, Moncef Tayahi

Proceedings Volume 4872, (2002) https://doi.org/10.1117/12.475148

KEYWORDS: Modulation, Telecommunications, Receivers, Signal detection, Particle filters, Single sideband modulation, Channel projecting optics, Eye, Multiplexing, Phase shifts

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Showing 5 of 10 publications

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