Ali A. Jasim

Dr. Ali A. Jasim

Department of Mathematics and Physics, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Praha, Hlavní Město, Czech Republic
+2
orcid
Optical Fiber Technolongy

Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 May 2011 in Sensors and Actuators A: Physical
Verified
Journal Article
Closed access
KLK.S. Lim
K.S. Lim
SHS.W. Harun
S.W. Harun
SDS.S.A. Damanhuri
S.S.A. Damanhuri
Ali A. JasimAli A. Jasim
Ali A. Jasim
CTC.K. Tio
C.K. Tio
HAHarith Ahmad
Harith Ahmad

17 November 2020 in Materials
Verified
Journal Article
Open access
PDF file
FTFilip Todorov
Filip Todorov
JAJan Aubrecht
Jan Aubrecht
Pavel PeterkaPavel Peterka
Pavel Peterka
OSOndřej Schreiber
Ondřej Schreiber
Ali A. JasimAli A. Jasim
Ali A. Jasim
PHPavel Honzátko
Pavel Honzátko
Laser sources emitting in the infrared range at around 2 µm are attracting great interest for a variety of applications like processing of transparent thermoplastic polymers in industry as well as plenty of applications in medicine, spectroscopy, gas sensing, nonlinear frequency conversion to the mid-infrared, to mention a few. Of late, fiber lasers compared to other kinds of lasers benefit from their all-fiber design, leading to a compact, robust, and well thermally manageable device. Particularly, thulium- and holmium-doped fiber lasers are the first choice in fiber lasers emitting light around 2 µm. In this paper, we give an overview of our recent results in the research on thulium- and holmium-doped optical fibers, fiber lasers, and related research topics in the 2-µm spectral range. In particular, we present, to our knowledge, the first results of improvement of pump absorption in double-clad fibers thanks to the fiber twist frozen during drawing. Finally, a brief demonstration of material processing by thulium all-fiber laser operating at 2 µm is presented.


1 January 2016 in Sensors and Actuators A: Physical
Verified
Journal Article
Closed access
MJM.F. Jaddoa
M.F. Jaddoa
Ali A. JasimAli A. Jasim
Ali A. Jasim
MRMohd Zulhakimi Ab Razak
Mohd Zulhakimi Ab Razak
SHS.W. Harun
S.W. Harun
HAHarith Ahmad
Harith Ahmad

1 November 2014 in Sensors and Actuators A: Physical
Verified
Journal Article
Closed access
Ali A. JasimAli A. Jasim
Ali A. Jasim
NHN. Hayashi
N. Hayashi
SHS.W. Harun
S.W. Harun
HAHarith Ahmad
Harith Ahmad
RPR. Penny
R. Penny
KNK. Nakamura
K. Nakamura

11 October 2012 in IEEE Sensors Journal
Verified
Journal Article
Closed access
Ali A. JasimAli A. Jasim
Ali A. Jasim
SHSulaiman Wadi Harun
Sulaiman Wadi Harun
HAHamzah Arof
Hamzah Arof
HAHarith Ahmad
Harith Ahmad
A compact inline microfiber Mach-Zehnder interferometer (MMZI) is proposed for high temperature sensing. The MMZI is fabricated using a flame-brushing technique in which both transition parts of a microfiber are tapered to reduce the waist diameter and form an interference region. Since the refractive index of the fiber core exhibits a different temperature coefficient from that of air, the interferometer is sensitive to temperature variation. The temperature sensitivity of the device with a length of 40 mm was measured to be 13.4 pm/ ° C with an excellent linearity for temperature measurement up to 800 ° C.