)2008,2009,2010,2011 ( ‫أنموذج ( ب ) الخاص بالبحوث لألعوام‬
University of Baghdad
College Name
Institute of laser for postgraduate studies
Department
Industrial & Engineering Applications Branch
Full Name as written
in Passport
Hussein Ali Jawad
e-mail
hussein@ilps.uobaghdad.edu.iq, hussein59hs@yahoo.com
Career
Research Title
Shared or Single
Published Journal title
Volume Number
Assistant Lecturer
Lecturer
Assistant Professor
Spectral width variation of ultrashort laser pulses in monomode optical
fibers
Shared name
HANI JASSIM KBASHI, KAIS A. AL-NAIMEE,
ROBERTO BENOCCI, PAOLO CARPEGGIANI,
CLAUDIO PEREGO, DIMITRI BATANI
Journal of Nonlinear Optical Physics and Materials
Single
18 - 3
Page
541 - 552
Year
2009
Abstract
Professor
Femtosecond laser pulse propagation in monomode optical fibers is
demonstrated and investigated numerically (by simulations) and
experimentally in this paper. A passively mode locked Nd:glass laser giving a
pulse duration of about 200 fsec at 1053 nm wavelength and 120 mW
average optical power with 100 MHz repetition rate is used in the
experimental work. Numerical simulations are done by solving the nonlinear
Schrödinger equation with the aid of Matlab program. The results show that
self phase modulation (SPM) leads to compression of the spectral width from
5 nm to 2.1 nm after propagation of different optical powers (34, 43, 86 and
120 mW) in fibers of different length (5, 15, 35 m). The varying optical
powers produced a varying phase shift. The output spectral width also
changed with the fiber length at a given peak power.