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Ultrafast all-optical ALU operation using a soliton control within the cascaded InGaAsP/InP microring circuits
(2019-02-04)
Soysouvanh, S.
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Phongsanam, P.
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Mitatha, S.
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Ali, J.
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Yupapin, P.
A dark-bright soliton conversion is used to perform the two arithmetic logic unit operations namely adder and subtractor operations. The advantage of the system such as power stability, non-dispersion and the dark-bright soliton phase conversion control can be obtained. The input source into the circuit is the bright soliton pulse, with the pulse width of 35 ps, the peak power at 1.55 µm is 1 mW. By using the dark-bright soliton conversion pair, the generated logic bits can be controlled, and the secure bits can be achieved. The simulation results show the output signal with a minimum loss of only 0.1% with respect to a low input power of 1 mW, and ultra-fast response time of about 1 ps can be achieved. It gives the ultra-high bandwidth of more than 40 Gbits<sup>−1</sup>. The circuit composes six microring resonators made of InGaAsP/InP material with smaller ring radii of 1.5 µm, and the total physical scale of the circuit less than 100 µm<sup>2</sup>.
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Ultra-fast electro-optic switching control using a soliton pulse within a modified add-drop multiplexer
(2018-09-01)
Soysouvanh, S.
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Jalil, M. A.
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Amiri, I. S.
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Ali, J.
;
Singh, G.
We have proposed the use of a soliton pulse that propagates within a modified add-drop filter, which is made of a GaAsInP/P material. It is in the form of a Panda-ring resonator, from which a bright/dark soliton pulse is input into a system via an input port. The conversion between bright and dark soliton pulses is introduced at the 3 dB coupler, i.e. the change in phase of π/2. But it is not superimposed each other. The output solitons obtained at the through and drop ports are bight and dark solitons respectively. Both signals can be used to form “ON’ and “OFF” or “1” and “0”, which are useful for the digital bit generation. The switching speed of the system can be improved by employing the two nonlinear side rings. In application, secure output bits can be arranged by using the alternative input solitons or the control ports, where the input bright and dark solitons can be converted into output bits. This means that the output bits can be randomly switched between “1” and “0”, which can be identified by the sender. Moreover, the additional information can be multiplexed via the add port and transmitted in either free space or optical fiber via the whispering gallery mode and through port outputs. Finally, the electro-optic switching can be transferred and the electronic switching by the embedded stacked layers, where the ultrafast switching of light input can lead the ultrafast electrical switching speed. The switching speed of ~ 5 fs and the offset time of ~ 220 fs of the “on” and OFF” are achieved by using the selected ring parameters.
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All-optical S-R flip-flop using dark-bright soliton conversion control
(2012-10-02)
Soysouvanh, S.
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Luangxaysana, K.
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Yoshida, M.
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Komine, N.
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Phongsanam, P.
We propose a new design for all-optical S-R flip-flop using optical technique namely dark-bright soliton conversion control within an optical add-drop filter. In operation, all-optical data input logic '0', '1' is formed by dark soliton (D) and bright soliton (B) pulses, respectively. The conversion behaviour between dark and bright soliton pulses can be obtained and formed the logic pulses by a π/2 phase shifted device (i.e. an optical coupler), in which the binary logic operation can be formed simultaneously at the thought and drop ports, respectively. In all-optical S-R flip-flop application can be recognized as a simple and flexible system for forming the logic switching system. Numerical simulation results are obtained and confirmed for the useful application, in which the advanced logical system can be operated. © 2012 IEEE.
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Novel all-optical flip-flop using dark-bright soliton conversion control
(2012-07-09)
Luangxaysana, K.
;
Phongsanam, P.
;
Mitatha, S.
;
Yoshida, M.
;
Komine, N.
This study proposed a new design for all-optical S-R and D flip-flop using optical technique namely dark-bright soliton conversion control within an optical add-drop filter. In operation, all-optical data input logic '0', '1' is formed by dark soliton (D) and bright soliton (B) pulses, respectively. The conversion behavior between dark and bright soliton pulses can be obtained and formed the logic pulses by a π/2 phase shifted optical coupler device. The binary logic operation can be formed simultaneously at the through and drop ports, respectively. In application, the proposed scheme can be recognized as a simple and flexible system for forming the logic switching system. Numerical simulation results are obtained and confirmed for the useful application of an advanced logical system can be operated. © 2012 Asian Network for Scientific Information.
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All-optical logic and arithmetic operation using soliton control for tree architecture use
(2012-07-05)
Luangxaysana, K.
;
Phongsanam, P.
;
Mitatha, S.
;
Yoshida, M.
;
Komine, N.
This study has proposed a new design system for basic all-optical logic and arithmetic operation using dark-bright soliton conversion control base on tree architecture. Optical tree architecture and nonlinear materials can provide a significant role for contribution in optical interconnecting network and ultrafast photonic computing system. In operation, the input data for all-optical binary logic can be formed by dark and bright soliton pulses for logic '0' and '1', respectively. By using the dark-bright soliton conversion behaviors, the conversion between dark and bright soliton pulses can be obtained and formed the logic pulse by a 7i/2 phase shifted device (i.e., an optical coupler). In application, the proposed scheme can be recognized as a simple and flexible system for forming the logic switching system, which can be used for advanced logical system. © 2012 Asian Network for Scientific Information.

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