Ali A. Jasim, Ph.D.

Fields of scientific interest:

Design and fabrication specialty optical fibers, High power fiber laser, fabrication and application of optical Micro/Nanofiber devices, fiber optic sensors.

Professional activities:

2018 – today: Scientist at Institute of Photonics and Electronics of the AV CR, v. v. i.

2016-2017: Postdoctoral Research Fellow at Photonics research Center (PRC), University of Malaya, Malaysia

2014-2015: Visiting Research Fellow at PRC, University of Malaya, Malaysia

2013: PhD Student Exchange at Precision and Intelligence Laboratory, Tokyo Institute of Technology, Japan

2011-2014: PhD. Fellow at Faculty of engineering, Electrical Department, University of Malaya, Malaysia

2010-2012: Research Associate at Faculty of engineering, Electrical Department, University of Malaya, Malaysia

Professional Affiliation:

• Institute of Electrical and Electronics Engineers (IEEE), International, since 2014.
• Optical Society of America (OSA), International, since 2014.
• International society for optics and photonics (SPIE), International, since 2019.

Education:

2014: Ph.D - Photonics and Fiber Optics, University of Malaya (UM), Malaysia. 

2010: M.S - Optical Fiber Technology, Telecommunications Engineering, University of Malaya (UM), Malaysia. 

Current research projects:

Member of the projects:

Selected past projects:

Member of the projects:

• Research of novel geometries and layouts of double-clad rare-earth-doped fibers for high power fiber lasers

Awards and honors:

• 2021 - Guest Editor - Sensors Journal - Special Issue: “Fiber-Optic Sensors: Detection and Applications"
• 2011 - Bright Spark Scholarship, University of Malaya, Malaysia
• 2013 - AOTULE exchange program, Tokyo Institute of Technology, Japan
• 2020 - Topics Board and Guest Editor at Sensors Journal

Publications:

Journal papers:

1. A. Jasim, O. Podrazký, P. Peterka, M. Kamrádek, F. Todorov, P. Honzátko, "Reduction of water penetration into optical fiber preforms for improving preform shaping based on CO2 laser (Conference Presentation)," Proc. SPIE 11355, Micro-Structured and Specialty Optical Fibres VI, 113550B (1 April 2020). 
2. O. Schreiber, J. Aubrecht, A. A. Jasim, F. Todorov, P. Honzátko, "Thulium-doped fiber performance optimization via fiber bending and twisting and inner-cladding shape design," Proc. SPIE 11773, Micro-structured and Specialty Optical Fibres VII, 117731A (18 April 2021).
3. O. Podrazký, J. Mrázek, J. Proboštová, S. Vytykáčová, I. Kašík, Š. Pitrová, Ali A. Jasim “Ex-Vivo Measurement of the pH in Aqueous Humor Samples by a Tapered Fiber-Optic Sensor,” Sensors, 21, 5075, (2021). Link
4. P. Vařák, J. Mrázek, A. A. Jasim, S. Bysakh, A. Dhar, M. Kamrádek, O. Podrazký, I. Kašík, I. Bartoň, P. Nekvindová „Thermal stability and photoluminescence properties of RE-doped (RE = Ho, Er, Tm) alumina nanoparticles in bulk and fiber-optic silica glass,“ Optical Materials, Vol. 118, 111239, (2021). Link
5. A. A. Jasim, P. Peterka, O. Podrazký, M. Kamrádek, F. Todorov, P. Honzátko “Efficient approach to designing low OH diffusion in the thermally shaped double-clad fibers,” Optical Fiber Technology, Vol. 63, 102513, (2021). Link
6. M. Grábner, K. Nithyanandan, P. Peterka, P. Koška, A. A. Jasim, P. Honzátko "Simulations of Pump Absorption in Tandem-Pumped Octagon Double-Clad Fibers," IEEE Photonics Journal, Vol. 13, No. 2, pp. 1-14, 1500314, (2021). Link
7. A. A. Jasim, O. Podrazký, P. Peterka, M. Kamrádek, I. Kašík, and P. Honzátko, “The impact of shaping optical fiber preforms based on grinding and CO2 laser on the inner-cladding losses of shaped double-clad fibers,” Optics Express, Vol. 28, no. 9, (2020).
8. O. Podrazký, A.A. Jasim, P. Peterka, M. Kamrádek, J. Aubrecht, I. Kašík, and P. Honzatko, “Double-Clad Active MOF and Shaped Optical Fibers for Fiber Lasers and Amplifiers,” In 22nd IEEE International Conference on Transparent Optical Networks (ICTON) (pp. 1-4). 2020.
9. A. A. Jasim, O. Podrazký, P. Peterka, F. Todorov, M. Kamrádek, and P. Honzátko, “OH Diffusion Control in the Shaped Optical Fiber Preforms Based on CO2 Laser,” in OSA Advanced Photonics Congress (OSA), Specialty Optical Fibers, SoM3H. 5, 2020.
10. M. Grábner, K. Nithyanandan, P. Peterka, P. Koška, P. Honzátko, and A. A. Jasim, "Numerical modeling of pump absorption in coiled and twisted double-clad fiber: a prospect for tandem pumped fiber laser,” Proc. SPIE, Micro-Structured and Specialty Optical Fibres VI, 113550W (2020).
11. F. Todorov, J. Aubrecht, P. Peterka, O. Schreiber, A. A. Jasim, J. Mrázek, O. Podrazký, M. Kamrádek, N. Kanagaraj, M. Grábner, Y. Baravets, J. Cajzl, P. Koška, A. Fišar, I. Kašík, P.Honzátko,”Active Optical Fibers and Components for Fiber Lasers Emitting in the 2-μm Spectral Range,” Materials 2020, 13, 5177.
12. M. Grabner, K. Nithyanandan, P. Peterka, P. Koska, A. A. Jasim, P. Honzatko,  “Simulations of Pump Absorption in Tandem-Pumped Octagon Double-Clad Fibers,” IEEE Photonics journal, 2021, (accepted ).
13. A. A. Jasim, J. Aubrecht, P. Peterka, M. Kamrádek, O. Podrazký, F. Todorov, I. Kašík and P. Honzátko, “Efficient Pump Absorption in Twisted Double Clad Thulium-Doped Fibers Drawn of CO2 Laser Shaped Preform,” In Proc. CLEO-Europe and EQEC, München, CJ-p-8, (2019).
14. A. A. Jasim, O. Podrazký, P. Peterka, F. Todorov, and P. Honzátko, "Experimental investigation and characterization of fabrication shaped clad optical fiber by thermally polishing optical fiber preforms with CO2 laser," in Micro-structured and Specialty Optical Fibres VI, Int. Soc. Opt. Photonics, vol. 11029, p. 1102909, (2019).
15. P. Peterka, p. Koška, A. A. Jasim, N. Kanagaraj, J. Aubrecht, M. Kamrádek, O. Podrazký, F. Todorov, F., I. Kašík, and P. Honzátko, “Enhanced Pump Absorption Efficiency in Coiled and Twisted Double-Clad Fibers for Fiber Lasers,” IEEE 21st International Conference on Transparent Optical Networks (ICTON), pp. 1-4, (2019).
16. A. A. Jasim, I. Kašík and P. Honzátko, “Inner-cladding Shaping Based Pump Absorption Enhancement,” In Proc. 30th Conference and Exhibition on Optical Communications, Prague, pp. 14-16, (2019).
17. A. A. Jasim, “Optical Fiber Based Microstructures,” Invite Talk, Inter-Photonics, International Conference on Photonics Research, Antalya, Turkey, October 8-12, 2018. 
18. H.Ahmad, M.J. Faruki, A.A.Jasim, S.I. Ooi, K. Thambiratnam,"Poly (N-vinyl Carbazole) Polypyrrole/graphene oxide nanocomposite material on tapered fiber for Q-switched pulse generation," Optics & Laser Technology, Vol. 99, pp. 184-190.
19. A. A. Jasim, M. J. Faruki, M. F. Ismail, H. Ahmad, "Fabrication and Characterization of Microbent Inline Microfiber Interferometer for Compact Temperature and Current Sensing Applications," IEEE Journal of Lightwave Technology, vol. 35, No. 11, pp. 2150-2155, (2017).
20. H. Ahmad, A. A. Jasim, "Fabrication and Characterization of 2 x 2 Microfiber Coupler for Generating Two Output Stable Multi-Wavelength Fiber Lasers," IEEE Journal of Lightwave Technology, Vol. 35, No. 19, pp. 4227-4233, (2017).
21. A. A. Jasim, and h. Ahmad, “A highly stable and switchable dual-wavelength laser using coupled microfiber Mach-Zehnder interferometer as an optical filter,” Optics & Laser Technology, Vol. 97, pp.12-19, (2017).
22. H. Ahmad and A. A. Jasim, “Stable C-band fiber laser with switchable multi-wavelength output using coupled microfiber Mach-Zehnder interferometer,” Optical Fiber Technology, Vol. 36, pp.105-114, (2017).
23. H. Ahmad, A. A. Jasim, M. J. Faruki, M. S. Rahman, and K. Thambiratnam, “Poly (N-vinylcarbazole)-Polypyrrole/Graphene Oxide Nanocomposites based Microfiber Interferometer for High Stability Temperature Sensor,” Sensors and Actuators A: Physical, Vol. 263, pp. 44–53, 2017.
24. H. Ahmad, S. I. Ooi, M. Z. Samion, A. A. Jasim, and Z. C. Tiu, “Tunable and switchable Brillouin multi-wavelength thulium fluoride fiber laser in S/S+ band region,” Optics Communications, Vol. 397, pp.91-94, (2017).
25. H. Ahmad, S. I. Ooi, M. Z. A. Razak, S. R. Azzuhri, A. A. Jasim, K. Thambiratnam, M. F. Ismail, and M. A. Ismail, “Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation technique,” Chinese Optics Letters, Vol. 15, No. 5, pp.051402, (2017).
26. A. S. Zulkhairi, S. R. Azzuhri, R. A. Shaharuddin, M. F. Jaddoa, M. A. M. Salim, A. A. Jasim, and H. Ahmad, “Switchable multiwavelength ytterbium-doped fiber laser using a non-adiabatic microfiber interferometer,” Laser Physics, Vol. 27, No. 5, pp.055104, (2017).
27. O. M. Kharraz, A. B. B. Mohammad, H. Ahmad, and A. A. Jasim, “Performance enhancement of multi-wavelength generations based on SOAs with a microfiber Mach–Zehnder interferometer,” Laser Physics, Vol. 27, No. 7, pp.075101, (2017).
28. M. F. Jaddoa, A. A. Jasim, M. Z. A. Razak, S. W. Harun, and H. Ahmad, “Highly Responsive NaCl Detector based on Inline Microfiber Mach-Zehnder Interferometer,” Sensors and Actuators A, Vol. 237, pp. 56-61, (2016).
29. Hamida, B. A., Azooz, S. M., A. A. Jasim, Eltaif, T., Khan, S., Ahmad, H., & Harun, S. W., “Flat-gain wide-band erbium doped fiber amplifier with hybrid gain medium,” Optik-International Journal for Light and Electron Optics, Vol. 127, No. 5, pp.2481-2484, (2016).
30. A. A. Jasim, M. Dernaika, S. W. Harun, and H. Ahmad, “A Switchable Figure Eight Erbium-Doped Fiber Laser Based on Inter-Modal Beating By Means of Non-Adiabatic Microfiber,” IEEE Journal of Lightwave Technology, Vol. 33, No. 2, pp. 528 – 534, (2015).
31. B. A. Hamida, S. M. Azooz, A. A. Jasim, T. Eltaif, H. Ahmad, S. Khan, and S. W. Harun, "Flat-gain wide-band erbium doped fiber amplifier by combining two difference doped fibers," Journal of the European Optical Society-Rapid publications, Vol. 10, no. 15015, pp. 1990-2573, (2015).
32. O. M. Kharraz, A. B. B. Mohammad, D. I. Forsyth, A. A. Jasim, and H. Ahmad, “Polarization-independent ASE four-wave mixing in a fast semiconductor optical amplifier,” Optics Communications, Vol. 355, pp. 498-503, (2015).
33. A. A. Jasim, N. Hayashi, S. W. Harun, H. Ahmad, R. Penny, Y. Mizuno, and K. Nakamura, “Refractive Index and Strain Sensing Using Inline Mach-Zehnder Interferometer Comprising Perfluorinated Graded-Index Plastic Optical Fiber,” Sensors and Actuators A, Vol. 219, pp. 94-99, (2014).
34. A. Zarei, A. A. Jasim, S. W. Harun, and H. Ahmad, "Investigation of spontaneous Brillouin scattering generation based on non-adiabatic microfibers," Laser Physics Letters, Vol. 11, No. 12, pp. 125105, (2014).
35. S. M. Azooz, B. A. Hamida, S. Khan, T. Eltaif, A. A. Jasim, H. Ahmad, and S. W. Harun, “All-fibre dual-wavelength thulium-doped fibre laser based on spatial filtering effect,” Ukrainian Journal of Physical Optics, Vol. 15, No. 2, pp. 79-83, (2014).
36. S. M. Azooz, A. A. Jasim, B. A. Hamida, H. Ahmad, S. W. Harun, A. Halder, M. C. Paul, S. Das, M. Pal, and S. K. Bhadra, “All-Fiber Dual-Wavelength Fiber Laser Operating At 1950 Nm Region Based on Multimode Interference Effect,” Optoelectronics and Advanced Materials – Rapid Communications, Vol. 8, No. 11-12, pp. 1035 – 1038, (2014).
37. A. A. Jasim, A. Z. Zulkifli, M. Z. Muhammad, S. W. Harun, and H. Ahmad, “A new compact micro-ball lens structure at the cleaved tip of microfiber coupler for displacement sensing,” Sensors and Actuators A, Vol. 189, pp. 177– 181, (2013).
38. A.A. Jasim, S.W. Harun M.Z. Muhammad, H. Arof, and H. Ahmad, “Current Sensor Based on Inline Microfiber Mach–Zehnder Interferometer,” Sensors and Actuators A, Vol. 192, pp. 9– 12, (2013).
39. A. A. Jasim, S. W. Harun, H. Arof, and H. Ahmad, “Inline Microfiber Mach–Zehnder Interferometer for High Temperature Sensing,” IEEE Sensors Journal, Vol. 13, No. 2, pp. 626-628, (2013).
40. M. Yasin, H. Ahmad, K. Thambiratnam, A. A. Jasim, S. W. Phang, and S. W. Harun, “Design of multimode tapered fibre sensor for glucose detection,” Optoelectronics and Advanced Materials-Rapid Communications, Vol. 7, No. 5-6, pp. 371-376, (2013).
41. M.Z. Muhammad, A. A. Jasim, H. Ahmad, H. Arof, and S.W. Harun, “Non-adiabatic silica microfiber for strain and temperature sensors,” Sensors and Actuators A, Vol. 192, pp. 130– 132, (2013).
42. H. Ahmad, K. Thambiratnam, Z. zulkifli Ahmad, A. Lawrence, A. A. Jasim, W. Kunasekaran , S. Musa, N. Gnanasegaran, P. Vasanthan, P. Jayaraman, H. A. Noor Kasim, V. Govindasamy, S. Mohammad Shahrir, and S. W. Harun, “Quantification of Mesenchymal Stem Cell Growth Rates through Secretory and Excretory Biomolecules in Conditioned Media via Fresnel Reflection,” Sensors, Vol. 13, No. 10, pp. 13276-13288, (2013).
43. M. Batumalay, F. Ahmad, A. Lokman, A. A. Jasim, S. W. Harun, and H. Ahmad, “Tapered plastic optical fiber coated with single wall carbon nanotubes polyethylene oxide composite for measurement of uric acid concentration,” Sensor Review, Vol. 34, No. 1, pp. 75-79, (2013).
44. A. Sulaiman, S. W. Harun, F. Ahmad, M.Z. Muhammad, A. A. Jasim, and H. Ahmad, “Demonstration of microfiber hybrid Mach–Zehnder and knot resonator structurR,” Microwave and Optical Technology Letters, Vol. 55, No.1, pp. 100–102, (2013).
45. Z. A. Zulkifli, A. A. Jasim, S. W. Harun, H. Arof, K. Dimyati, amd H. Ahmad, “Coupling characteristics of two uniform microfibers,” Optoelectronics and Advanced Materials-Rapid Communications, Vol. 7, No. 3-4, pp. 244-247, (2013).
46. S.W. Harun, A. A. Jasim, H. A. Rahman, M. Z. Muhammad, and H. Ahmad, “Micro-Ball Lensed Fiber Based Glucose Sensor,” IEEE Sensors Journal, Vol. 13. No. 1, PP. 348-350, (2013).
47. A. A. Jasim, S. W. Harun, K. S. Lim, B. M. A. Rahman and H. Ahmad, “Microfiber Mach–Zehnder Interferometer and its application as a current sensor,” IET Optoelectrons, Vol. 6, No. 6, pp. 298–302, (2012).
48. A.A. Jasim, K. S. Lim, M. Z. Muhammad, H. Arof, H. Ahmad, and S. W. Harun, “Transmission characteristic of multi-turn microfiber coil resonator,” Optics and Laser Technology, Vol. 44, No. 6, pp. 1791-1795, (2012).
49. A. A. Jasim, A. Z. Zulkifli, M. Z. Muhammad, H. Ahmad, and S. W. Harun, “Fabrication and Characterization of a 2 × 2 Microfiber Knot Resonator Coupler,” Chinese Physics Letters, Vol. 29, No. 8, pp. 084204, (2012). 
50. A. A. Jasim, M. Z. Muhammad, A. Z. Zulkifli, F. Ahmada, H. Ahmad, and S. W. Harun, “Fabrication and characterization of 2 × 2 microfiber coupler,” Optoelectronics and Advanced Materials-Rapid Communications, Vol. 6, No. 1-2, pp. 7-11, (2012).
51. K. S. Lim, A. A. Jasim, S. S. A. Damanhuri, S. W. Harun, B. M. Azizur Rahman, and H. Ahmad, “Resonance condition of a microfiber knot resonator immersed in liquids,” Applied Optics, Vol. 50, No. 30, pp. 5912-5916, (2011).
52. K. S. Lim, S.W. Harun, S. S. A. Damanhuri, A. A. Jasim, H. H. Ku, and H. Ahmad, “Low-cost spectral tunable microfiber knot resonator,” IET Optoelectron, Vol. 5, No. 6, pp. 281–284, (2011).
53. K. S. Lim, S. S. A. Damanhuri, A. A. Jasim, C. K. Tio, S.W. Harun, and H. Ahmad, “Current Sensor Based on Microfiber Based knot Resonators” Sensors and Actuators A, Vol. 167, pp. 60–62, (2011).
54. K. S. Lim, S. W. Harun, A. A. Jasim, and H. Ahmad, “Fabrication Of Microfiber Loop Resonator-Based Comb Filter” Microwave And Optical Technology Letters, Vol. 53, No. 5, pp. 1119-1121, (2011).
55. S. W. Harun, K. S. Lim, and A. A. Jasim, “Dual wavelength Erbium-doped fiber laser using a tapered fiber,” Journal of Modern Optics, Vol. 57, No. 21, pp. 2111-2113, (2010).
56. S. W. Harun, K. S. Lim, A. A. Jasim, and H. Ahmad, “Fabrication of tapered fiber-based ring resonator, Laser Physics, Vol. 20, No. 7, pp. 1629–1631, (2010).

Conferences & Presentations:

1. A.A. Jasim, “Optical Fiber Based Microstructures,” Invited speaker, International Conference on Photonics Research (InterPhotonics 2018), Antalya, Turkey, (2018).
2. A. Jasim, S. W. Harun and H. Ahmad, “Fabrication of Inline Microfiber Mach–Zehnder Interferometer for current sensor,” 5th Multidisciplinary International Student Workshop (MISW2013), Tokyo Institute of Technology, Japan, (2013).
3. A. Jasim, A. Z. Zulkifli, M. Z. Muhammad, H. Ahmad, S. W. Harun, “Development of Knot Resonator based on 2 × 2 optical microfiber Coupler,” The 7th Asia-Oceania Top University League on Engineering (AOTULE) Conference, university of Malaya, (2012).
4. A. Jasim, “Current Sensor based on Inline Microfiber Mach-Zehnder Interferometer,” Higher Degree Seminar, Faculty of Engineering- University of Malaya, 2013.
5. M. Z. Muhammad, A. A. Jasim, H. Ahmad and S.W. Harun, “Microfiber Coupler Devices,” IEEE-ICSE2012 Proc., Kuala Lumpur, Malaysia, (2012).
6. S. W. Harun, H. Ahmad A. A. Jasim, and A. Sulaiman, "Microfiber structures and its sensor and laser applications," Photonics Global Conference (PGC), Singapore, (2012).
7. S. W. Harun, A. Sulaiman, A. A. Jasim, F. Ahmad and H. Ahmad, “Microfiber Knot Resonator Based Devices,” The 10th International PSU Engineering Conference (IPEC-10) Engineering Technology for Advancement of ASEAN Community, Thailand, (2012).