Abdulhadi Al-Janabi

Abdulhadi Al-Janabi received the Ph.D. degree from the Indian Institute of Technology, Delhi, India, in 1993. He did his postdoctoral training at the Institute of Photonics, Vienna University of Technology, Austria, in 2004. He is currently a Professor with the Institute of Laser for Postgraduate Studies, University of Baghdad, Iraq. His current research interests include fiber laser, fiber laser sensors, and photonics applications.

EDUCATION

Ph.D. Laser Physics

RESEARCH INTERESTS

Fiber lasers , optical fiber sensors , laser in dentistry , laser design , short and ultrashort laser pulses

Scopus Publications

A drop-like optical fiber salivary pH sensor: A rapid and real-time detection of periodontal disease
Huda Abdulsahib Sabbar, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
Elsevier BV



Spacing adjustable and switchable multi-wavelength Erbium-doped fiber laser based on the parallel filter of photonic crystal fibers and polarization hole burning effect
Ali Salah Mahdi, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
Elsevier BV



Numerical optimization and performance evaluation of Pr³⁺/Yb³⁺ doped all-fiber up-conversion visible fiber laser
Ali Salah Mahdi, Wijdan Mhmood Khudhair, Sarah Kadhim Al-Hayali, and Abdul Hadi Al-Janabi
Elsevier BV



Zero and double-knotted droplet-shaped optical fiber sensor for rapid temperature variation monitoring
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.


Tapered coreless optical fiber-based refractive index sensor for acetone concentration detection
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.


Adjustable optical fiber displacement-curvature sensor based on macro-bending losses with a coding of optical signal intensity
Shahad Sabhan Al-Lami, Hussein.K. Atea, Ansam M. Salman, and Abdulhadi Al-Janabi
Elsevier BV



Vernier effect based on cascading two Mach–Zehnder interferometers for selectable comb filter and saturable absorber applications in erbium-doped fiber laser
Hussein Alaa Al-Rubaiyee, Sarah Kadhim Al-Hayali, Sulaiman Wadi Harun, and Abdul Hadi Al-Janabi
Elsevier BV



Wide-range pH sensor based on a cascaded MZI up-down tapered hetero-core structure
Sura Hussein Mahmood, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
Optica Publishing Group
In this paper, we describe the first demonstration of an optical fiber sensor based on two cascaded architectures of the Mach–Zehnder interferometer (MZI) with an up-down-tapered (UDT) hetero-core fiber structure for simultaneous pH measurement at two different spatial locations. The two fiber structures, namely structures I and II, were fabricated by sandwiching a 45 mm and 60 mm long piece of no-core fiber (NCF) between two single-mode fibers (SMFs), respectively. By inserting a down-taper between two adjacent up-tapers in the NCF section using the over-fusion splicing technique, the UDT hetero-core fiber structure was achieved. The down-taper works as an optical attenuator, while the two up-tapers each function as a fiber splitter/combiner. By cascading the two sensor structures I and II, two distinct interference dips were obtained, resulting in dual sensing points (so-called sensing points I and II). According to experimental results, it was shown that the proposed sensing points I and II are pH-sensitive, and exhibit sensitivities of 1.0428 nm/pH and −1.7857nm/pH for simultaneous measurement for each point as the pH ranged from 8 to 14 and from 1 to 7 pH, respectively. The obtained results show that the proposed dual point pH sensor has the potential to be used for the simultaneous detection of pH parameters in any environment and at various places.


Switchable mode-locked ytterbium-doped fiber laser based on macrobending loss tuning of figure-eight knot fiber structure
Abdulhadi Al-Janabi, Haneen Qassim Merza, Sarah Kadhim Al-Hayali, and Ansam M. Salman
SPIE-Intl Soc Optical Eng



Multiplexed dual-point refractive index sensor based on cascaded up-down tapered hetero-core structured fiber
Sura Hussein Mahmood, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
Optica Publishing Group
In this paper, we report the demonstration of an optical fiber sensor based on the cascaded up-down-tapered (UDT) hetero-core fiber structures in a sequence for simultaneous refractive index (RI) measurement at dual spatial locations for the first time. The two hetero-core fiber structures, namely sensor structures A and B, were fabricated by sandwiching a section of no-core fiber (NCF) with lengths of 45 and 60 mm between two standard single-mode fibers (SMF), respectively. The UDT hetero-core fiber structure was formed by introducing a down taper between two adjacent up tapers in the NCF section by using the over-fusion splicing method. The dual up tapers respectively serve as a fiber splitter/combiner, and the down taper acts as an optical attenuator. The proposed dual point sensing head (sensing point A and sensing point B) was engineered by cascading the two sensor structures A and B to generate two separate interference dips and achieve wavelength division multiplexing. Experimental results show that for the dual point sensing structure, sensing point A and sensing point B are sensitive to RI independently and simultaneously, and exhibit sensitivities of 99 nm/RIU and 93.7 nm/RIU for simultaneous measurement of RI ranging from 1.33 to 1.38 for each point, respectively. During measurement, there is no mutual interference to each sensing head. The results point out that the proposed dual point sensor can be potentially applied for the simultaneous detection of RI in any environment and at different locations.


Wearable macro-bend optical fiber sensor for biomechanical motion evaluation
Shahad Sabhan Al-Lami, Ansam M. Salman, and Abdulhadi Al-Janabi
Elsevier BV



Skin-like and highly elastic optical fiber strain sensor based on a knot-bend shape for human motion monitoring
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.


Wide tuning range q-switched ytterbium doped fiber laser based on V<inf>2</inf>AlC saturable absorber
Fay F. Ridha and Abdulhadi Al-Janabi
Springer Science and Business Media LLC



Evaluation of the laser wavelength role on tooth bleaching in terms of color change, roughness, and microhardness with pulpal rapid temperature monitoring: an in vitro study
Raneen KH. Al-Hamd and Abdulhadi Al-Janabi
Optica Publishing Group
This in-vitro study evaluates the efficacy of the teeth bleaching approach using different laser wavelengths (405 nm blue diode, 940 nm infrared diode, and Er,Cr:YSGG 2780 nm lasers) in comparison to the conventional method using light-emitting diode (LED) sources (420–480) nm. Eighty caries-free sound human premolars were randomly divided into four groups (N=20). Each group received a different bleaching procedure. Then each group was further subdivided into two subgroups (N=10) stained with different solutions. The pulp chamber temperature rise was recorded using an optical fiber sensor with a novel design and fabrication. The color was analyzed using a digital spectrophotometer. Five samples of each subgroup were tested for surface roughness, while the others were tested for Vickers microhardness. The bleaching process with a short wavelength 405 nm blue diode laser showed the best results for the shade, with a minimum pulpal temperature increase indicating no possible necrosis and hence maintaining tooth vitality. Additionally, a remarkable reduction in bleaching time was achieved compared to the conventional approach. This process also yielded the highest color change (ΔE) and increased microhardness, with no noticeable change to the tooth roughness. The 405 nm blue diode laser applied for bleaching showed the best bleaching activity against tested stains and negligible pulpal temperature rise with a noticeable reduction in the bleaching time. The proposed novel method to measure temperature change could be used to develop a promising smart sensor for quick, effective, repeatable, and in-situ monitoring of human body temperature.


Fiber laser with intracavity parallel Mach-Zehnder interferometers towards Vernier refractive index sensing
Saif A. Mohammed, Sarah Kadhim Al-Hayali, and Abdul Hadi Al-Janabi
Optica Publishing Group
In this paper, dual-wavelength laser emission of an erbium-doped fiber laser (EDFL) with a tunable distinct wavelength selection of the simultaneously produced laser lines was achieved by applying a parallel comb filter configuration based on the optical Vernier effect. The intracavity inserted proposed comb filter consists of two parallel branches to generate the Vernier effect. Each branch is an in-line Mach–Zehnder interferometer (MZI) filter, which is composed of a polarization-maintaining fiber fusion spliced between single-mode fibers with sphere shapes at both ends. The tunability of the selected laser wavelength was realized by submerging the proposed filter in different sodium chloride/water mixtures. The proposed comb filter-based Vernier effect was used to independently achieve the selection of the dual-wavelength EDFL lines and for refractive index (RI) sensing applications. The in-line MZI1 and MZI2 structures show a wavelength shift sensitivity to RI variations of −88 and 79 nm/RIU, respectively. Our proposed MZI structure presents a reliable, straightforward, and low-cost spectral comb filter for separate tunable dual-wavelength laser generation in the c-band region. Furthermore, the proposed filter structure-based Vernier effect presents a new perspective and method in the RI sensing application.


Fiber laser with dual-channel and a selectable comb filter based on Vernier effect of parallel-connected two Mach-Zehnder interferometers
Saif A. Mohammed, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
SPIE-Intl Soc Optical Eng
Abstract. We propose and demonstrate the implementation and application of a new configuration of an all-fiber comb filter based on the Vernier effect produced by parallel-connected two in-line Mach–Zehnder interferometers (MZIs). Each in-line MZI was fabricated by fusion splicing a section of panda-type polarization maintaining fiber (PMF) with peanut-shaped tapers between two single-mode fibers. These two in-line MZIs, respectively, form reference and sensing interferometers, which are parallel-connected by two 3-dB optical fiber couplers to realize the Vernier effect. By incorporating the proposed comb-filter into the erbium-doped fiber laser cavity, two output channels at 1533.2 and 1558.2 nm have been achieved. Further, the combination of the parallel-connected two in-line MZIs and polarization controllers (PC1 and PC2) promotes the lasing in a switchable and selective way. To the best of the authors’ knowledge, this is the first demonstration of a comb filter that employs paralleled two peanut-shaped MZIs in PMF. The experimental results indicate that the proposed filter has the potential to be used in communication systems.


Vernier effect based on hybrid fiber interferometers: a new tool for wavelength switchability and adjustable free spectral range fiber lasing
Hussein Alaa Al-Rubaiyee, Sarah Kadhim Al-Hayali, and Abdul Hadi Al-Janabi
Optica Publishing Group
In optical communications systems, the used filter and/or demultiplexer needs to have a broad free spectral range (FSR) in order to accommodate more channels and have acceptable interchannel crosstalk. The Vernier effect applied to fiber filters is a recent effective tool to enlarge the FSR. Here, by harnessing the Vernier effect of a hybrid interferometer consisting of a Mach–Zehnder interferometer (MZI) and Sagnac interferometer (SI), we proposed and experimentally demonstrated a new kind of comb filter for a switchable and interval adjustable multi-wavelength C-band erbium-doped fiber laser (EDFL) application. In the designed comb filter, the MZI is composed of bi-tapered polarization-maintaining fibers (PMFs) fabricated by fusion splicing and has the function of achieving the switchability of the proposed dual-wavelength EDFL. The SI configured by nesting tapered PMF is employed as a switchable and wavelength-spacing tuning component of triple-wavelength EDFL. In this experiment, the FSR of the MZI and the SI is designed to be close but not equal, which could be achieved by properly adjusting the length of the employed PMF, so the Vernier effect can exist and a comb spectrum with an obvious envelope is obtained. Through the adjustment of the polarization controller (PC1) and (PC2) inside the cavity, a switchable and interval-adjustable multi-wavelength EDFL was achieved. To the best of the authors’ knowledge, this is the first time that an all-fiber hybrid filter based on the Vernier effect has been used to manipulate the spectral output characteristic of an EDFL and achieve a switchable multi-wavelength fiber laser.


Ultrafast lithium disilicate veneer debonding time assisted by a CO<inf>2</inf> laser with temperature control
Ayat salam, Rawaa A. Faris, and Abdulhadi Al-janabi
Optica Publishing Group
We report on using a CO2 (10.6 µm) laser to debond the lithium disilicate veneers. Sixty-four sound human premolar teeth and 64 veneer specimens were used in the study. The zigzag movement via CO2 laser handpiece along with an air-cooled jet to prevent temperature elevation above the necrosis temperature limit (5.5 C°) was applied. The optimal deboning irradiation time was super-fast, at about 5 seconds at 3 Watt CO2 laser power. It is 20 times less than any previously published work for veneers debonding. The enamel beneath the debonded veneers has been assessed by atomic force microscopy (AFM) and shear stress technique as criteria for the easiness of debonding. The fast deboning process with nonsignificant changes in enamel integrity and tooth vitality reflects the high potential of CO2 laser in veneers debonding.


Safe and efficient dental cavity preparation by applying a gradient-in-power approach from Er,Cr:YSGG laser: an in-vitro study
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.


Weaving-based wearable sensing instrument designed for the joint motion monitoring of the elbow and knee flexion angle
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.


Wide-range and highly sensitive pH sensor based on a figure-eight fiber structure coated with copper/polyvinyl alcohol hydrogel
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.


Mach-Zehnder interferometer comb filter for multi-wavelength mode-locked generation from erbium-doped fiber laser
Fay F. Ridha, Abdulhadi Al-Janabi, and Sarah Kadhim Al-Hayali
Applied Optics Optica Publishing Group



Fe<inf>2</inf>O<inf>3</inf>-SiO<inf>2</inf> nanocomposite film-induced high nonlinear effect for multiwavelength mode-locked generation in ytterbium-doped fiber laser
Ansam M. Salman, Rawaa A. Faris, and Abdulhadi Al-Janabi
Elsevier BV



Metamaterials subwavelength terahertz resonant cavities
M. Al-Rubaiee, A. H. Al-Janabi, S. C. Fleming, and A. Argyros
Journal of the European Optical Society-Rapid Publications Springer Science and Business Media LLC
AbstractOne of the unique properties of metamaterials is the ability to manipulate electromagnetic waves at subwavelength scales, made possible by their structure on these scales. Here, rather than consider effective bulk properties, we consider the properties of microscopic features based on considering resonant unit cells. We used wire array metamaterials to form localized resonant cavities by changing the resonance frequency of one or more unit cells, surrounded by unchanged unit cells that do not support resonance for the propagating mode (i.e. forming a band gap). We validate our approach experimentally with electromagnetic waves in the terahertz range, demonstrating and characterizing subwavelength resonant cavities in this range. These resonant cavities can pave the way for ultra-compact subwavelength waveguides and other optical components.


Sensitivity-Enhanced Moisture Sensor Based on ?-shape Bending Fiber Coated with Copper-Polyvinyl Alcohol Thin Film
Ansam M. Salman, Sarah Kadhim Al-Hayali, and Abdulhadi Al-Janabi
Institute of Electrical and Electronics Engineers (IEEE)

RECENT SCHOLAR PUBLICATIONS

Numerical optimization and performance evaluation of Pr3+/Yb3+doped all-fiber up-conversion visible fiber laser
AHAJ Ali Salah Mahdi*, Wijdan Mhmood Khudhair, Sarah Kadhim Al-Hayali
Optical Fiber Technology 90, 104119 2025



A drop-like optical fiber salivary pH sensor: A rapid and real-time detection of periodontal disease
HA Sabbar, SK Al-Hayali, A Al-Janabi
Analytical Biochemistry 701, 115818 2025



Spacing adjustable and switchable multi-wavelength Erbium-doped fiber laser based on the parallel filter of photonic crystal fibers and polarization hole burning effect
AAJ Ali Salah Mahdi , Sarah Kadhim Al-Hayali
Infrared Physics and Technology 147, 105814 2025



Wearable Textile: A Drop‑Shaped Optical Fiber Sensor Based on Hybrid Integration of Wavelength and Intensity Modulation for Human Body Motion Monitoring
HKASSALAMSAA Janabi3
Sensing and Imaging 26 (37) 2025



Reconfigurable multiwavelength Er-doped fiber laser based on free spectral range control of parallel connected nonlinear photonic crystal fiber Mach–Zehnder interferometers
AHAJ Ali Salah Mahdi,, Sarah Kadhim Al-Hayali
Optical engineering 64 (2), 026102-1 2025



Zero and double-knotted droplet-shaped optical fiber sensor for rapid temperature variation monitoring
SSAL Ansam M. Salman, Abdulhadi Al-Janabi, Zainab M. Salman, Karrar M. Salman
Optics Continuum 3 (12), 2360-2368 2024



Tapered coreless optical fiber-based refractive index sensor for acetone concentration detection
YH Kadhum, AM Salman, A Al-Janabi
Optics Continuum 3 (11), 2127-2138 2024



Adjustable optical fiber displacement-curvature sensor based on macro-bending losses with a coding of optical signal intensity
SS Al-Lami, HK Atea, AM Salman, A Al-Janabi
Sensors and Actuators A: Physical 373, 115403 2024



Vernier effect based on cascading two Mach–Zehnder interferometers for selectable comb filter and saturable absorber applications in erbium-doped fiber laser
HA Al-Rubaiyee, SK Al-Hayali, SW Harun, AH Al-Janabi
Optical Fiber Technology 84, 103757 2024



Wide-range pH sensor based on a cascaded MZI up-down tapered hetero-core structure
S Hussein Mahmood, S Kadhim Al-Hayali, A Al-Janabi
Applied Optics 63 (11), 2906-2915 2024



Switchable mode-locked ytterbium-doped fiber laser based on macrobending loss tuning of figure-eight knot fiber structure
AMS Abdulhadi Al-Janabi , Haneen Qassim Merza,, Sarah Kadhim Al-Hayali
Optical engineering 63 (4), 046104-1 046104-13 2024



Wide-range pH sensor based on cascaded MZI up-down tapered hetero-core structured
S Hussein, SK Al-Hayali, A Al-Janabi
Optica Open 2023



Multiplexed dual-point refractive index sensor based on cascaded up-down tapered hetero-core structured fiber
ANDAALJ SURA HUSSEIN MAHMOOD, SARAH KADHIM AL-HAYALI
Optics Continuum 2 (12), 2451-2467 2023



Skin-like and highly elastic optical fiber strain sensor based on a knot-bend shape for human motion monitoring
AAJ shahad al lami, Ansam Salman
Applied Optics 62 (33), 8958-8967 2023



Wearable macro-bend optical fiber sensor for biomechanical motion evaluation
AAJ Shahad Sabhan Al-Lami , Ansam M. Salman
Optical Fiber Technology 81, 103560 2023



Evaluation of the laser wavelength role on tooth bleaching in terms of color change, roughness, and microhardness with pulpal rapid temperature monitoring: an in vitro study
RKHAHANDA Al-Janabi
Applied Optics 62 (20), 5475- 5486 2023



Wide tuning range q-switched ytterbium doped fiber laser based on V₂AlC saturable absorber
FF Ridha, A Al-Janabi
Optical and Quantum Electronics 55 (10), 897 2023



Weaving-based wearable sensing instrument designed for the joint motion monitoring of the elbow and knee flexion angle
SS Al-Lami, AM Salman, A Al-Janabi
Optics Continuum 2 (9), 1967-1980 2023



Fiber laser with dual-channel and a selectable comb filter based on Vernier effect of parallel-connected two Mach–Zehnder interferometers
SA Mohammed, SK Al-Hayali, A Al-Janabi
Optical Engineering 62 (6), 066102-066102 2023



Fiber laser with Intracavity Parallel Mach-Zehnder Interferometers Towards Vernier Refractive Index Sensing
SA MOHAMMED, SK AL-HAYALI, AH AL-JANABI
Applied Optics 62 (17), 4650-4659 2023

MOST CITED SCHOLAR PUBLICATIONS

Aluminum oxide nanoparticles as saturable absorber for C-band passively Q-switched fiber laser
SKM Al-Hayali, DZ Mohammed, WA Khaleel, AH Al-Janabi
Applied optics 56 (16), 4720-4726 2017
Citations: 85



Copper oxide nanomaterial saturable absorber as a new passive Q-switcher in erbium-doped fiber laser ring cavity configuration
SA Sadeq, SK Al-Hayali, SW Harun, A Al-Janabi
Results in Physics 10, 264-269 2018
Citations: 58



Ultrashort pulse generation with an erbium-doped fiber laser ring cavity based on a copper oxide saturable absorber
AHAJ Sinan Abdulhameed Sadeq, Sulaiman Wadi Harun
Applied Optics 57 (18), 5180-5185 2018
Citations: 56



High sensitivity balloon-like interferometric optical fiber humidity sensor based on tuning gold nanoparticles coating thickness
SK Al-Hayali, AM Salman, AH Al-Janabi
Measurement 170, 108703 2021
Citations: 44



High sensitivity balloon-like thermometric sensor based on bent single mode fiber
DI Al-Janabi, A Salman, AH Al-Janabi
Measurement Science and Technology 31, 115106 2020
Citations: 41



Indefinite Media Based on Wire Array Metamaterials for the THz and Mid‐IR
OT Naman, MR New‐Tolley, R Lwin, A Tuniz, AH Al‐Janabi, ...
Advanced Optical Materials 1 (12), 971-977 2013
Citations: 41



Passively Q-switched erbium doped fiber laser based on double walled carbon nanotubes-polyvinyl alcohol saturable absorber
DZ Mohammed, AH Al-Janabi
Laser Physics 26 (11), 115108 2016
Citations: 39



Tunable Q-switched erbium doped fiber laser based on metal transition oxide saturable absorber and refractive index characteristic of multimode interference effects
DZ Mohammed, WA Khaleel, AH Al-Janabi
Optics & Laser Technology 97, 106-110 2017
Citations: 37



Dual-wavelength passively Q-switched ytterbium-doped fiber laser using Fe3O4-nanoparticle saturable absorber and intracavity polarization
SKM Al-Hayali, AH Al-Janabi
Laser Physics 28 (3), 035103 2018
Citations: 32



Efficient humidity sensor based on an etched no-core fiber coated with copper oxide nanoparticles
HASKAHA Al-Janabi
Journal of Nanophotonics 12 (4), 046018-1 -12 2018
Citations: 32



Synthesis and characterization of 3D-printed functionally graded porous titanium alloy
A Hindy, F Farahmand, F Pourdanesh, M Torshabi, AH Al Janabi, ...
Journal of Materials Science 55, 9082-9094 2020
Citations: 31



Effect of hygroscopic polymer-coatings on the performance of relative humidity sensor based on macro-bend single-mode fiber
AMSAHAJ Sarah Kadhim Al-Hayali
Optical Fiber Technology 62, 102460 2021
Citations: 29



Aluminum nanoparticles saturable absorber as a passive Q-switcher for erbium-doped fiber laser ring cavity configuration
AA Salman, AH Al-Janabi
Laser Physics 29 (4), 045102 2019
Citations: 29



Au coated ZnO/MWCNTs nanocomposites film-induced four-wave-mixing effect for multi-wavelength generation in erbium-doped fiber laser
SKAHAHAJ lRawaa A.Faris
Optics communications 485 (126746) 2021
Citations: 28



Stable L-band multiwavelength erbium-doped fiber laser based on four-wave mixing using nickel nanofluid
ANDAALJ ANSAM M. SALMAN,* ALI A. SALMAN
Applied Optics 58 (22), 6136-6143 2019
Citations: 28



High-sensitivity sucrose erbium-doped fiber ring laser sensor
WA Khaleel, AHM Al-Janabi
Optical Engineering 56 (2), 026116-026116 2017
Citations: 28



Q-switching Near Infrared Multiwavelength Generation by Intracavity Tungsten Oxide Induced Four-Wave Mixing in Erbium-doped Fiber Laser
A SALMAN, AH AL-JANABI
Applied Optics 58 (16), 4332-4336 2019
Citations: 26



Erbium-doped fiber ring laser with wavelength selective filter based on non-linear photonic crystal fiber Mach–Zehnder interferometer
WA Khaleel, AH Al-Janabi
Laser Physics 27 (10), 105104 2017
Citations: 26



Novel applications of short and ultra-short pulses
M Strassl, H Kopecek, M Weinrotter, A Bcker, AH Al-Janabi, V Wieger, ...
Applied surface science 247 (1-4), 561-570 2005
Citations: 25



Triple-wavelength passively Q-switched ytterbium-doped fibre laser using zinc oxide nanoparticles film as a saturable absorber
SK Mohsin Al-Hayali, A Hadi Al-Janabi
Journal of Modern Optics 65 (13), 1559-1564 2018
Citations: 24