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Determination of FWHM for soliton trapping
(2011-12-01)
Afroozeh, A.
;
Amiri, I. S.
;
Ali, J.
;
Yupapin, P. P.
In this study an interesting system in which a bright and dark soliton pulse can be stopped inside a nonlinear waveguide is presented. Here, we propose a system consisting of a series of ring resonators for optical trapping within a nonlinear waveguide. The bright and dark solitons can be controlled and slowed down within the waveguide. The FWHM for the output signals are calculated and used as an optical memory. Bright and dark soliton behaviors within a micro and nano ring resonator are also investigated and described. The required pulse is filtered and amplified, can be controlled and localized within the system. The localized bright and dark solitons are stopped by controlling the input power, which means that the photon stopping can be controlled by light in a ring resonator. © Penerbit UTM Press, Universiti Teknologi Malaysia.
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Optical dark and bright soliton generation and amplification
(2011-11-11)
Afroozeh, A.
;
Amiri, I. S.
;
Kouhnavard, M.
;
Jalil, M. A.
;
Ali, J.
We propose two designed systems consist of series of micro ring resonator (MRR) and an add/drop multiplexer in which the optical dark and bright soliton pulse propagating within the nonlinear waveguides can be amplified which can be used in long communication system. The dark or bright soliton is input into designed systems and travels within the waveguide. A continuous soliton pulse is sliced into smaller pulses by the nonlinear effect which is known as chaos. In this way large bandwidth of optical signals can be obtained. The power amplification occurs when the soliton propagates along the MRRs or add/drop systems. The add/drop multiplexer system can itself be used to amplify the optical soliton when the bright soliton is input at the drop part of the system. In this work we have studied the generation of amplified pulse of optical dark and bright soliton when they propagating inside single systems or when they interact and collide during propagation inside an add/drop device. It means that amplified soliton pulse also can be obtained when two types of soliton i.e., dark and bright soliton collide with each other in a same system. In such a way the amplified dark soliton or bright soliton can be used to perform the long distance link. © 2011 American Institute of Physics.
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Bright and dark soliton stopping using nonlinear waveguide
(2011-05-02)
Afroozeh, A.
;
Aziz, M. S.
;
Jalil, M. A.
;
Ali, J.
;
Yupapin, P. P.
In this study we propose an interesting system in which a bright and dark soliton pulse can be stopped within a nonlinear nanowaveguide. The system consists of micro and nano ring resonators, in which soliton pulse is input into the system and stopped pulse can be achieved within the nonlinear waveguide. A soliton input is chopped by the nonlinear effects into smaller pulses (chaos). The required pulse is filtered and amplified, which can be controlled and localized within the nonlinear waveguide. The localized bright and dark solitons are stopped by controlling the input power, which means that the photons stopping is controlled by light.
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Simulation of soliton amplification in micro ring resonator for optical communication
(2011-01-01)
Afroozeh, A.
;
Amiri, I. S.
;
Bahadoran, M.
;
Ali, J.
;
Yupapin, P. P.
A system consisting of a series of micro ring resonator (MRR) is proposed. Optical dark and bright soliton pulses propagating through the nonlinear waveguides are amplified. This system can be used in long distance communication system. The dark and bright soliton is input into the designed system. The nonlinear effect contributes to segregation of continuous soliton pulse into smaller pulses. In this way large bandwidth of optical signals can be obtained. The power amplification occurs when the soliton propagates along the MRRs systems. In this research the concern is the generation of amplified pulse of optical dark and bright soliton while propagating in the MRR device. Simulated results show the amplification of bright soliton in which the input power increases from 0.6 W to 10.9331 W and 7.684 W at the trapped wavelength of 1520.428 nm and 1519.912 nm respectively. © Penerbit UTM Press, Universiti Teknologi Malaysia.
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Photons trapping within a nano-ring resonator controlled by light
(2010-11-01)
Yupapin, P. P.
;
Ali, J.
We propose the interesting results that a bright and dark soliton pulse can be localized within a nonlinear nano-waveguide. The system consists of nonlinear micro- and nano-ring resonators, whereas the soliton pulse can be input into the system and trapped within the nano-waveguide. A soliton input is chopped by the nonlinear effects known as chaos into smaller pulses. The required pulse is filtered and amplified, which can be controlled and localized within the nano-waveguide. The localized bright and dark solitons are trapped within a nano-waveguide by controlling the nano-waveguide input power, which means that the photons trapping is controlled by light. © 2009 Elsevier GmbH. All rights reserved.
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Dark soliton generation using dual brillouin fiber laser in a fiber optic ring resonator
(2010-04-01)
Hanim, S. F.
;
Ali, J.
;
Yupapin, P. P.
Stable dark soliton pulses have been successfully generated in an erbium doped dispersion compensated fiber (DCF) using an enhanced dual Brillouin fiber laser (DBFL) scheme. Multidark soliton pulses generation in an S-band erbium doped depressed cladding fiber (DC-EDF) using a multiwavelength Brillouin fiber laser (MW-BFL). Configuration has also been successfully demonstrated. The hybrid amplification from the 300 mW power of Raman pump (RP), 7.7 km long DCF, and 30 m DC-EDF that is being pumped bidirectionally results in a stable multiwavelength Brillouin peaks in the S-band region. Results obtained shows that the insertion of linear gain medium with bidirectional pumping of the DC-EDF into the cavity gives significant amplification and promotes the formation of stokes peaks in the S-band region. The number of Brillouin peaks generated is closely dependent on the DBFL and MW-BFL configuration, the Brillouin pump (BP) signal wavelength, the BP coupling ratio, and the RP power. © 2010 Wiley Periodicals, Inc.
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Photon trapping model within a fiber bragg grating for dynamic optical tweezers use
(2010-04-01)
Yupapin, P. P.
;
Saktioto, T.
;
Ali, J.
We propose a new potential model that can be used to describe the trapped photon within a fiber Bragg grating, which is trapped by the potential well. We found that the localized, i.e., trapped soliton within the fiber Bragg grating is seen. The soliton well within a dark soliton has been observed using the forward and backward pumping of the S-band erbium doped fiber. The process of stimulated Brillouin scattering is described as a nonlinear interaction between the pump and the Stokes fields through an acoustic wave. As both energy and momentum are conserved during each scattering process, the annihilation of pump photon creates Stokes photon and an acoustic phonon simultaneously. The destruction interference is seen as the dark soliton valley, i.e., well, which is surrounded by the intense optical field, which is formed by the potential well. The application of such a behavior is that the dynamic probing tool known as an optical tweezers can be used. Moreover, the novel aspect for dynamic optical tweezers is plausible, where the trapped pulse or molecule can be moved, i.e., transportation. © 2010 Wiley Periodicals, Inc.

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