H
Harith Ahmad
Researcher at University of Malaya
Publications - 1197
Citations - 14394
Harith Ahmad is an academic researcher from University of Malaya. The author has contributed to research in topics: Fiber laser & Laser. The author has an hindex of 45, co-authored 1126 publications receiving 11904 citations. Previous affiliations of Harith Ahmad include Airlangga University & University of Glasgow.
Papers
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Journal ArticleDOI
Mode-locked thulium-fluoride fibre laser with an adjustable pulse width using a nonlinear optical loop mirror
TL;DR: In this article, a mode-locked thulium-fluoride fiber laser with a tunable pulse width using a nonlinear optical loop mirror (NOLM) for operation in the S-band region is proposed and demonstrated.
Journal ArticleDOI
Thermally tunable microfiber knot resonator based erbium-doped fiber laser
TL;DR: In this article, a tunable erbium-doped fiber laser is demonstrated using a highly doped fiber and a microfiber knot resonator (MKR) structure which is laid on the surface of a small peltier.
Journal ArticleDOI
All-incoherent wavelength conversion in highly nonlinear fiber using four-wave mixing
O.M. Kharraz,Harith Ahmad,David I. Forsyth,Mohamad Dernaika,Mohd Zamani Zulkifli,Mohd Faizal B. Ismail,Abu Bakar Mohammad +6 more
TL;DR: In this paper, the authors describe an efficient and polarization insensitive, all-incoherent four-wave mixing wavelength conversion achieved within a short length of highly nonlinear fiber medium, created by using both spectrallysliced pump and probe channels from a single-amplified spontaneous emission source coupled to two narrow-band fiber Bragg grating (FBG) filters.
Proceedings ArticleDOI
Shorter Wavelength Gain Shift In EDFA Using A Macro-Bending Approach
S.A. Daud,Siamak Dawazdah Emami,K.S. Mohamed,Hairul Azhar Abdul-Rashid,Sulaiman Wadi Harun,Harith Ahmad,Mohd Ridzuan Mokhtar,Zulfadzli Yusoff,Faidz Abd Rahman +8 more
TL;DR: In this paper, the EDF is wound in a small radius to suppress the amplified spontaneous emission at the longer wavelength in order to achieve a high amplification in the shorter wavelength region between 1480 nm and 1530 nm.
Journal ArticleDOI
Stokes signal saturation in tunable BEFL system
TL;DR: In this article, the Stokes shifted signal with 7 nm tunability generated by a hybrid Brillouin/erbium fiber laser (BEFL) system was investigated, and the results showed that there is a saturation point after which further increment of Brilloupin pump power will no longer increase the signal power, and this saturation point determines the optimum pump power needed for a specific BEFL configuration.