Ansam Salman
@nahrainuniv.edu.iq
Al- Nahrain university
Ansam M. Salman received her B.Sc. degree and her M.Sc. degree in laser and optoelectronics engineering from Al-Nahrain University, Baghdad, Iraq, in 2006 and 2009, respectively. Currently, She is a lecturer at the laser and optoelectronics engineering department, Al-Nahrain University(IRAQ) and she is working towards her Ph.D. at the Institute of Laser for Postgraduate Studies, University of Baghdad, Iraq. Her research interest includes optical fiber lasers, optical fiber filters and optical fiber sensors.
EDUCATION
B.Sc. degree and her M.Sc. degree in laser and optoelectronics engineering from Al-Nahrain University, Baghdad, Iraq
Scopus Publications
Scopus Publications
Ansam M. Salman, Abdulhadi Al-Janabi, Zainab M. Salman, Karrar M. Salman, and Shahad Sabhan Al-Lami
Optica Publishing Group
Compact, simple optical fiber sensors based on a macro-bend fiber configuration were fabricated and proposed for instantaneous temperature measurement. These fiber sensors were manufactured by straightforwardly mechanically bending two different pieces of single-mode fiber (SMF) into zero-knotted droplet-shaped and double-knotted droplet-shaped, separately, with radii of a few millimeters. The sharp bending excites mode interferences among the core mode and the stimulated modes transmitting in the cladding region of the silica SMF. Many resonant interference fringes were perceived in the transmission signal and were noticed to shift to a shorter spectral region with the rise of environmental temperature (ET). The resultant data prove the practicality of the fabricated optical fiber sensors with excellent temperature sensitivities of about −1.128 nm/°C and −1.904 nm/°C, for zero-knotted droplet-shaped and double-knotted droplet-shaped, respectively, which is several times larger than sensors based on straight-transmitted fiber constructions. The proposed sensors’ structures may contribute effectively to temperature variations monitoring for environmental or industrial uses due to their large thermo-optical coefficient of the silica core and the big RI difference between the core and cladding of the bending fiber section.
Marwah AL-OGAIDI
Kare Publishing
Yosra Hussain Kadhum, Ansam M. Salman, and Abdulhadi Al-Janabi
Optica Publishing Group
A fast-response optical fiber sensor is designed and fabricated to detect different concentrations of volatile acetone. The proposed sensor structure was fabricated by splicing a segment of tapered coreless fiber (CLF) amid two single-mode fibers (SMF). Herein, tuned tapered diameters and lengths of CLF’s cladding were immersed in various concentrations of the acetone solutions to sense the effective refractive index (RI) variations. Accordingly, the sensor’s performance with tuned diameters at different lengths of the CLF was optimized to realize the suitable size of amplified evanescent fields. The sensor responded remarkably towards acetone concentrations, with a superior sensitivity of 336.102 nm/RIU, 0.163 nm/%, and 27.531 × 10−5 nm/ppm at 5 cm length and 60 µm taper diameter of CLF. The examined sensor possesses a fast response time with a minimum detection limit of 0.244 RIU, 5.025%vol, and 2.9 ppm. Though the rapid evaporation (volatility) of the acetone compound exempted it from air pollutants, many industrial and human body processes produce acetone which needs to be detected. The examined sensor may have the potential to detect in a non-invasive approach with high accuracy and rapid diabetes in humans, lung cancer, etc.
Shahad Sabhan Al-Lami, Hussein.K. Atea, Ansam M. Salman, and Abdulhadi Al-Janabi
Elsevier BV
Abdulhadi Al-Janabi, Haneen Qassim Merza, Sarah Kadhim Al-Hayali, and Ansam M. Salman
SPIE-Intl Soc Optical Eng
Shahad Sabhan Al-Lami, Ansam M. Salman, and Abdulhadi Al-Janabi
Elsevier BV
Shahad Sabhan Al-Lami, Ansam M. Salman, and Abdulhadi Al-Janabi
Optica Publishing Group
A simply designed, highly sensitive, stretchable, compact wearable, and skin-like optical fiber sensing instrument is designed and demonstrated for joint motion monitoring. The fiber sensing scheme comprises only a section of single-mode fiber (SMF) deformed in the knot-like configuration, which performs as a Mach–Zehnder interferometer (MZI) based on a modal coupling mechanism between the core and cladding modes of the deformed SMF section. This proposed optical fiber sensor based on a knot-like configuration is mounted onto wearable woven fabric and then garments on the limbs of a healthy human’s body. As the flexion angle of the human limb is varied, the interference fringe coding based on the spectral shift difference of the periodical transmission spectra is perceived. The proposed wearable optical fiber sensor exhibits excellent sensitivities from around −0.431 to −0.614nm/∘ realized for elbow and knee joint flexion between a range of motion around 0°–90°. Additionally, this sensor also displays high repeatability and stability and a fast response time of 1.4 ms, combined with a small standard deviation of about 2.585%. The proposed sensor device possesses manufacturing simplicity, high processing accuracy, lightness, and elasticity, as well as certain improvements over other goniometers and optical fiber sensors. These attributes of the proposed sensor prove its applicability for human joint angle monitoring.
Alyamama MH. Al-Shammari, Ansam M. Salman, and Abdulhadi Al-janabi
Optica Publishing Group
In this in-vitro study, a gradient-in-power approach aims to ensure no temperature elevation beyond the necrosis limit (5.5 °C) during laser cavity preparation of dental hard tissues. The applied optimal Er,Cr:YSGG laser parameters were: 20 Hz pulse repetition rates (prr), average powers at a maximum of 5.5 W for enamel switched to a maximum of 3.5 W for dentine surface specimens. A fabricated fast-response all-optical fiber sensor was used to monitor temperature change simultaneously. A scanning electron microscope (SEM) and a Fourier transform infrared (FTIR) spectroscopy were used to assess the irradiated surfaces. Holes of 500 µm in depth were obtained with no morphological and chemical alterations.
Shahad Sabhan Al-Lami, Ansam M. Salman, and Abdulhadi Al-Janabi
Optica Publishing Group
This work presents a wearable optical fiber sensing scheme based on an eight-figure macro-bend fiber configuration. The wearable sensor scheme utilizes a single-mode fiber deformed on an eight-figure configuration. The fabricated optical fiber sensor is mounted onto a wearable woven fabric and then garment on the elbow and knee joints of different healthy volunteers’ bodies. The proposed wearable biomechanical sensor shows an excellent sensitivity correlated with the human knee and elbow joints’ range of motion 0°-90° which is about −0.963 nm/°, with good regression coefficients (R2) exceeding 99.6%, for elbow joint flexion and sensitivity of 0.874 nm/° with a high R2 exceeding 99.4% for knee flexion. Besides, this sensor also displays high repeatability and stability and a fast response time of 1.66 ms, combined with a small standard deviation of about 2.321%. So, the planned wearable optical fiber sensor system is a practicable option for monitoring joint motion, human movement analysis, and soft robots.
Ansam M. Salman, Sarah Kadhim Al-Hayali, and Abdul Hadi Al-Janabi
Optica Publishing Group
Construction of pH sensors based on optical fiber encapsulated copper (Cu-NPs) has been accomplished. Briefly, a length of single-mode fiber (SMF) of about 25 cm has been wrapped in two rings by twisting one side of the fiber on the other from both ends to form a figure-eight shape. To upsurge the sensitivity, the sensor configuration has been immobilized with copper nanoparticles/polyvinyl alcohol hydrogel (Cu/PVA) composite. The Cu/PVA composite was employed to shape a membrane structure on the sensing active length by laminating it using the dip-coating method. The wavelength interrogation method was employed to evaluate the sensitivity of the fabricated pH sensor. The fabricated fiber pH sensor exhibits a sigmoidal response above a wide range of pH from 1 to 14. The result displays a superior sensitivity of ∼4.8 nm/pH for a range of 1-7 pH and 3.86 nm/pH for the range of 8-14 pH with an excellent linear response. Besides the great sensitivity, the dual-parameters measurement of pH and refractive index was effectively accomplished with perfect stability. The proposed fiber sensor possesses a superior performance compared with the other sensors.
Sarah Kadhim Al-Hayali, Ansam M. Salman, and Abdul Hadi Al-Janabi
Elsevier BV
Ansam M. Salman, Rawaa A. Faris, and Abdulhadi Al-Janabi
Elsevier BV
Ansam M. Salman, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
Institute of Electrical and Electronics Engineers (IEEE)
Ansam M. Salman, Sarah Kadhim Al-Hayali, Rawaa A. Faris, and Abdulhadi Al-Janabi
Optik Elsevier BV
Zahraa J. Naeem, Ansam M. Salman, Rawaa A. Faris, and Abdulhadi Al-Janabi
Applied Optics The Optical Society
Fay F. Ridha, Ansam M. Salman, and Abdulhadi Al-Janabi
Applied Optics The Optical Society
Sarah Kadhim Al-Hayali, Ansam M. Salman, and Abdul Hadi Al-Janabi
Optical Fiber Technology Elsevier BV
Ali H. Abdalhadi, Ansam M. Salman, Rawaa A. Faris, and Abdulhadi Al-Janabi
Optical Materials Elsevier BV
Abstract Passively pulse dual-wavelength ytterbium-doped fiber laser (YDFL) around 1 μm utilizing titania–carbon nanocomposite (TiO2–C NC) thin film as the optical modulator is experimentally demonstrated. The TiO2–C NC thin-film reveals great nonlinear saturable absorption characteristics with a transmission difference of 24.06% at the lasing emission around the 1 μm region. Stable self-starting mode-locked emission with a pulse of ~8 ns and a repetition rate of 30.7 MHz was achieved at threshold exciting power of about 115 mW. By adapting the polarization controller (PC) together with the pump power, fundamental, third, and sixth harmonic frequencies can be switched to each other. The corresponding pulse durations to the third and sixth harmonic mode-locked were 6.8 and 1.8 ns, respectively. The corresponding maximum output power was 1.8 mW. This work opens up another way to build cost-effective, greatly stable optical modulators, and presents the option to build novel nanocomposite-based photonic devices with TiO2–C NC.
Sarah Kadhim Al-Hayali, Ansam M. Salman, and Abdul Hadi Al-Janabi
Measurement: Journal of the International Measurement Confederation Elsevier BV
Abstract We report on the effect of gold nanoparticles (Au-NPs) coating thickness on the sensitivity of a relative humidity (RH) sensor based on a balloon-shaped single-mode fiber (BSBS) structure for the first time. The BSBS structure was established by bending a coated single-mode fiber (SMF) into a balloon shape by using a section of a capillary tube. Three structures with various gold nanocoated sensing have been fabricated to select the optimal thickness. The thicknesses of the Au-NPs were 10, 20, and 30 nm. The performance of each structure towards different RH levels ranged from 35% to 95% was experimentally investigated. Experimentations showed that the RH sensor with a nanocoating thickness of 20 nm exhibits the highest sensitivity of -0.571 nm/RH with an ultra-fast response time of 1.41ms. Overall, the results point out that increasing or decreasing the coating thicknesses than the optimum thickness leads to a decrease in sensor sensitivity.
Dunia I Al-Janabi, Ansam M Salman, and Abdulhadi Al-Janabi
Measurement Science and Technology IOP Publishing
A simple and compact temperature sensor based on a Mach-Zehnder modal interferometer has been fabricated by bending a single-mode fiber into a balloon-like configuration. Three Different fiber sections: fiber without stripping, fiber with a stripped-off protective coating, and a fibre with a polyvinyl alcohol (PVA) coating have been utilized, each with a small bending diameter of 1 cm that mimics a balloon-like shape. The PVA-coated segment sensor structure showed the highest sensitivity of ~−1.492 nm/°C, a fast response time of ~2.78 ms and a good resolution of ~3 × 10−4°C, for the temperature range 30-55oC benefiting from the good thermo-optical properties of PVA. This sensor can potentially be used in various temperature monitoring processes such as food industries, chemical analysis, detections of molecular analysis, and label-free biomedicine.
Dunia I. Al-Janabi, Ansam M. Salman, and Abdulhadi Al-Janabi
Journal of Nanophotonics SPIE-Intl Soc Optical Eng
Abstract. A compact all-fiber temperature sensor based on a gold nanoparticle (GNP)-coated macrobent standard single-mode fiber (SMF) has been proposed and experimentally demonstrated. It can be easily constructed by just bending an SMF into a suitable bending radius to constitute a Mach–Zehnder modal interferometer. The sensing area of the bent SMF was coated with GNP utilizing the magnetron sputtering technique. Different tuned GNP thicknesses of ∼10, 20, and 30 nm were deposited on different bent fibers and the temperature-sensing performance was examined experimentally. Throughout the experiments, the wavelengths of the monitored interference dips decreased gradually and were blueshifted with an increase in temperature in the range of 35°C to 47°C. Among the three coated sensing heads, the proposed sensor coated by an ∼20-nm layer thickness of GNP showed the best performance with excellent sensitivity, fast rise time, and an excellent resolution of −2.56 nm / °C, 1.73 ms, and 1.82 × 10 − 4°C, respectively. Benefiting from its excellent advantages of simple configuration, easy fabrication, and high mechanical strength, this high-sensitivity temperature sensor could be a competitive candidate for precise temperature measurement of the human body.
Ansam M. Salman and Abdulhadi Al-Janabi
Fiber and Integrated Optics Informa UK Limited
ABSTRACT We report on the generation of multiwavelength Q-switched pulses from a Ytterbium-doped fiber laser (YDFL) cavity by employing a nickel nanoparticle (Ni-NPs) thin film as an optical modulator. Owing to the high nonlinearity of Ni-NPs and the distinguished saturable absorption property, stable single-, dual-, triple-, or quadruple-line, Q-switched generation with a 0.7 nm channel spacing have been achieved by simply adjusting the 976 nm pump power to between 144–290 mW. At the maximum diode pump power, the output obtained from Ytterbium-doped fiber laser (YDFL) has a minimum pulse width of 138.7 ns, a maximum repetition rate of 82.4 kHz, a maximum pulse energy of 9.1 nJ and a maximum output power of 777.14 µW.
Ansam M. Salman and Abdulhadi Al‐Janabi
Microwave and Optical Technology Letters Wiley
Ansam M. Salman and Abdulhadi Al-Janabi
Elsevier BV
Abstract We report on the use of Nickel nanoparticles (Ni-NPs) as saturable absorber (SA) to generate Q-switched fiber laser pulses in C-band. The Ni-NPs were incorporated in polyvinyl alcohol (PVA) to produce thin film-based saturable absorber (SA) and integrated into an erbium-doped fiber laser (EDFL) ring cavity to generate passively Q-switching. The Ni-doped PVA SA reveals modulation depth of 15% and a saturation intensity of 200 MW/cm2. Lasing in CW region begins at 77 mW pump power, whereas stable self-starting Q-switching with a central wavelength of 1563.1 nm begins at 85 mW. By fine adjustment of the laser diode pump power up to 236.4 mW dual-, and triple- lasing lines have been observed at 1563.1, 1563.3 and 1563.4 with side mode suppression ratio (SMSR) of more than 49 dB. The proposed laser is useful for generating pulse laser with a minimum pulse width of 1.5 μs and a maximum repetition rate of 56.79 kHz with a pulse energy of about 4.33 nJ at the maximum pump power of 275 mW. The stability of the pulse is verified from the radio-frequency (RF) spectrum with a measured signal-to-noise ratio (SNR) of 44 dB. The ability of Ni-PVA as an effective SA may lead to further development of pulsed fiber laser in the field of photonics.
Ansam M. Salman, Ali A. Salman, and Abdulhadi Al-Janabi
The Optical Society
A simple continuous-wave multiwavelength erbium-doped fiber laser based on four-wave mixing has been successfully demonstrated utilizing nickel nanofluid (Ni-NF) for the first time, to the best of our knowledge. By fine adjustment of the laser diode pump power up to 196 mW and without any intracavity filtering, stable dual-, triple-, and quadruple-lasing lines in the L-band have been observed at 1595.6 nm, 1596.8 nm, 1598 nm, and 1599.2 nm, respectively, with a signal-to-noise ratio ∼43 dB. The induced L-band wavelengths showed high stability with wavelength shifts <0.07 nm and power fluctuation of <3 dB by monitoring the output spectra for a duration of 30 min at room temperature. Taking into account the superiority of Ni-NF in terms of compactness, low cost, and easy fabrication, this design can be practically used in a variety of nonlinear photonic applications.