Pipatsart, Surasak
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Pipatsart, Surasak
Alternative Name
Pipatsart, S.
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Email
surasak.pi@kmitl.ac.th
8 results
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Item type:Publication, Geometrically distributed one-dimensional photonic crystals for all angle optical filters(2012-11-01); Yupapin, P. P.We present the general formulation of light reflection using a series of one-dimensional (1D) photonic crystals (PCs) with different periods, which is made of nonabsorptive materials of any refractive indices.To have a large bandgap, the spectral range of reflection, the periods of 1D PCs must be distributed in a geometrical progression with a common ratio, r, smaller than a maximum value of r <inf>c</inf>. In this letter, the exact expressions for rc, the bandgap to mid gap ratio of the PC heterostructure and the minimum number of PCs to achieve the desired range of bandgap in single and all angles of incidence have been presented. The proposed method can be used to design the optical filters for vast range of applications such as ultraviolet (UV) filters (i.e., sunglasses, eye safety glasses, UV photography filters) and visible light filters. © 2012 Wiley Periodicals, Inc. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, SOLITON SPIN in AN ADD-DROP OPTICAL FILTER for LONG DISTANCE SPIN TRANSPORT(2012-03-01); ; Ali, J.A new concept of an optical spin generation using bright and dark soliton conversion behaviors within a modified optical add-drop filters known as a PANDA ring resonator is proposed. The orthogonal solitons can be formed randomly within the system and detected simultaneously at the output ports. Under the resonant condition, the orthogonal solitons corresponding to the left-hand and right-hand solitons (photons) can be generated. Whenever a photon is absorbed by an object, an angular momentum of either + ℏ or - ℏ is imparted to the object, in which two possible spin states known as soliton spins are exhibited. Many soliton spins, i.e., many particles, dynamic spin and long distance spin transport using the proposed design are also discussed. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Micro stirling engine controlled by light(2011-01-01); ; Yupapin, P. P.This paper proposes a new technique for a micro Stirling engine operation using leaky light resonant or whispering gallery modes (WGMs) in a nano-waveguide, in which the nano-waveguide is designed and configured by a nanoring resonator. By using the Optiwave programming based on Finite Difference Time-Domain (FDTD) method, an InGaAsP/InP nanoring resonator was designed and simulated. The simulation results obtained have shown that the leaky light resonant modes can be controlled by the ring radius variations, whereas the maximum resonant peak of nanoring resonator is occurred at the inner and outer ring radii of 0.775 and 1.55 μm respectively. The maximum peak intensity of the nanoring resonator is 12000 W/m<sup>2</sup>. Finally, the use of leaky light mode resonant peak of the center nanoring resonator for micro-Stirling engine is discussed in details. © 2011 Published by Elsevier Ltd. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, An investigation of dark soliton behaviors within the nonlinear micro and nano ring resonators(2010-11-01); Yupapin, P. P.We firstly propose the interesting results of a dark soliton pulse propagating within the nonlinear micro and nano waveguides. The system consists of nonlinear micro and nano ring resonators, whereas the dark soliton is input into the system and traveling within the waveguide. A continuous dark soliton pulse is chopped to be the smaller pulses by the nonlinear effects known as chaos. The nonlinear behaviors such as chaos, bistability and bifurcation are analyzed and discussed. The power amplification is the property that can be used to perform the long distance link, where the security is the dominant reason. © 2009 Elsevier GmbH. All rights reserved. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Nano radio and RoF applications(2012-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Multi transporters generation for high density molecule transportation via optical communication(2010-01-01); Yupapin, P. P.We propose a novel system of a quantum-molecular cryptography using the optical tweezers, whereas the transportation of molecules in the communication system can be performed. The molecule transportation states can be identified by using a single photon state of the transporter, which can be formed in the transmission line. The proposed fabricated material used is InGaAsP/InP, which can provide the required output signals. The design system consists of a nonlinear microring/nanoring resonator system incorporating an add/drop filter and a quantum signal processor. The transporter can be formed by the dark soliton, where the optical transporter is tuned and attenuated to be a single photon by the bright soliton control and transmitted into the link. In applications, the use of the proposed system incorporating a quantum processor can be performed the secured molecular communication. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Multitweezers generation using dark soliton pulses and applications(2011-08-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Acoustic cardiac signals analysis: A Kalman filter-based approach(2012-12-05)