Srinuanjan, Keerayoot

Preferred name

Alternative Name

Srinuanjan, K.

Srinuanjan, Kerrayoot

Main Affiliation

School of Science

keerayoot.sr@kmitl.ac.th

Now showing 1 - 9 of 9

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A nano-scale transducer using a PANDA type ring resonator for gas sensor applications
(2012-03-01)
Srinuanjan, Keerayoot
;
Kamoldilok, Surachart
;
Tipaphong, Weraphan
;
Yupapin, Preecha P.
We present a new system of nano-scale gas sensor using PANDA type ring resonator, whereas the sensing unit is a splitting ring resonator with two and four gaps. The method of finite difference time domain (FDTD) via the computer programming called Opti-wave was used to analyze and simulated all the parameters. The two systems were compared and the simulation result shown that the system of four splitting gaps is better resolution and more linear relationship than two splitting gaps unit. Finally, we found that this system can be used to be a high-precision self-calibration nano-scale gas sensor with in the of resolution of 1 nm. © 2011 Elsevier GmbH. All rights reserved.
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Two dimension photonic crystal Y-branch beam splitter with variation of splitting ratio based on hybrid defect controlled
(2014-10-09)
Chantakit, Teanchai
;
Srinuanjan, Keerayoot
;
Yupapin, Preecha P.
This article represents a new Y-branch hybrid design of 2D photonic crystal with defect control. The structure is made of hexagonal arrays of InP nano-rods surrounded by air. This system is comprised of a modified add/change to a polymethylmethacrylate (PMMA) rod, which can be applied to the beam splitter selection device. The optical properties and radial of PMMA defect rods have been transfigured. By selecting an appropriate temperature, a change of refractive index and expanded radius are occurred. The obtained results have shown that the selected optical amplitude in a hybrid semiconductor-polymer Y-branch can be separated to 50–50, 60–40 and 67–33 % at wavelength 1.557 µm. Both of the photonic band gap and transmission spectra are calculated by using 2D finite different time domain (FDTD) method via OptiFDTD software. Such a device can be useful for photonic crystal switching devices in the integrated optical circuit.
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Distributed sensors using a PANDA ring resonator type in multiwavelength router
(2011-08-08)
Tamee, Kreangsak
;
Srinuanjan, Keerayoot
;
Mitatha, Somsak
;
Yupapin, Preecha P.
We propose a new system of microring sensing transducer using a PANDA ring resonator type, in which the sensing unit is consisted of an optical add/drop filter and two nanoring resonators, where one ring is placed as a transducer (sensing unit), the other ring is set as a reference ring. In operation, the external force is assumed to exert on the sensing ring resonator. The method of finite difference time domain (FDTD) via the computer programming called Optiwave is used to simulate the sensing behaviors. The obtained results have shown that the change in wavelength due to the change in sensing ring radii is seen, in which the wavelength shift of 1 nm resolution is achieved. The distributed sensing system is designed, which is available for network sensing applications. The behavior of light within a PANDA ring resonator is also analyzed and reviewed. © 2006 IEEE.
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Micro-optical gyroscope using a PANDA ring resonator
(2012-06-20)
Sa-Ngiamsak, Wisitsak
;
Sirawattananon, Chaiwat
;
Srinuanjan, Keerayoot
;
Mitatha, Somsak
;
Yupapin, Preecha P.
We propose a new system of a micro-optical gyroscope (MOG) using a micro-embedded system. This system is comprised of a modified add/drop filter known as a PANDA ring resonator, which can be applied to navigate the direction with 3-D axes. The optical total path length of a MOG has been expanded by mean of an enhanced ring or PANDA ears. Simulation results obtained have shown that the precision signal at the phase difference of rotation orbit (straight line, ellipse, circle, etc.,) as a function of the inertial rotation rate Ω based on the Sagnac effect is achieved. The dependence of the transmission characteristics of the PANDA ring on the coupling coefficients of directional couplers is studied. The mathematical model of the system is analyzed and simulated. © 2012 IEEE.
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Characterization of blade Bragg grating modeling with different incident angle profiles for strain sensor applications
(2014-10-09)
Cheamanunkul, Niparat
;
Srinuanjan, Keerayoot
;
Yupapin, Preecha P.
This paper presents some preliminary results of sensing properties of single-mode silica blade Bragg gratings model which is coated by a poly(methyl methacrylate). The proposed mathematic model of blade Bragg gratings consists of alternated periodic slabs waveguide with inclined angle and is analyzed by using the principle of multilayer transfer matrix for photonic crystal. By varying the incident angle, the slabs angle, the proposed model is simulated for all of the parameters, regarding to the sensor applications. The simulation results were shown and discussed. According to the simulation results, this model can be used for sensitive stain sensor applications.
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Proposed nano-scale sensing transducer using nano-waveguide for dynamic measurement applications
(2009-01-01)
Srinuanjan, Keerayoot
;
Fujii, Yusaku
;
Chaiyachet, Panuwat
;
Yupapin, Preecha P.
We propose a new concept of a nano-sensing transducer system using a nano-waveguide. The small change in physical quantity affects to the change in device parameters such as refractive index or length which is relatively absorbed and observed by the resonant signal. In principle, the stored light pulse at the specified wavelength is generated by using a soliton propagating within the input ring resonators, whereas a resonant signal can be stored within the nano-waveguide, i.e. a transducer, which is formed the sensing ring device. The induced change in the resonant signal is occurred, and can be detected by using the wavelength domain detector (optical spectrum analyzer). Such a proposed device is suitable to perform the measurements in the nano-scale regime such as force, stress and temperature. © 2009 Elsevier B.V. All rights reserved.
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A Novel Design of an Embedded Optical Device System for Laser Gun Use
(2012-07-01)
Srinuanjan, Kerrayoot
;
Kamoldilok, Surachat
;
Tasakorn, Metha
;
Yupapin, Preecha P.
We propose a novel design for high-power laser source generation using a Gaussian pulse propagating within an embedded optical device system. The system consists of a non-linear microring resonator and an add-drop filter. In principle, a Gaussian laser pulse with a specified center wavelength ranging from 0.40 to 1.50 μm is fed into the designed system. By using suitable ring parameters, the required output at the specific center wavelength and power can be obtained by controlling the coupling coefficients of the add-drop filter. The power outputs for different center wavelengths were generated, for instance, 0.8, 1.3, 1.5 μm, which can be used to form suitable operating wavelengths for various applications, such as laser guns, swords and medical tools'. © 2011 The Society for Modeling and Simulation International.
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Novel dark-bright optical solitons conversion system and power amplification
(2009-12-01)
Sarapat, Khuntong
;
Sangwara, Narong
;
Srinuanjan, Keerayoot
;
Yupapin, Preecha P.
;
Pornsuwancharoen, Nithiroth
We propose a new system of the dark-bright solitons conversion using a micro- and nanoring resonators incorporating an optical add/drop filter, where the add/drop filter can be used to convert the dark soliton to a bright soliton. The key advantage of the system is that the detection of the dark soliton pulse is normally difficult due to the low level of input power. First, a dark soliton pulse is input into a microring resonator and then propagated into smaller micro- and nanoring resonators, respectively. Second, the add/drop filter is applied (connected) into the ring system, where the bright and dark solitons are obtained via the drop and through (or throughput) ports of the add/drop filter, respectively. The results obtained have shown that the detected soliton power can be controlled by the input soliton power and the ring resonator coupling coefficient, which is enough power to use in the transmission link. Thus, significant conversion-amplified signals can be achieved. © 2009 Society of Photo-Optical Instrumentation Engineers.
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Nanophotonics: devices, circuits, and systems
(2013-04-30)
Yupapin, Preecha P.
;
Srinuanjan, Keerayoot
;
Kamoldilok, Surachart
Optical device is become the interesting tool which can be involved in various applications. The use of such device has been investigated in many areas, for instance, E/O (electrical/optical) and O/E(optical/electrical) signal converters, optical signal processing, optical sensor, optical communication and medicine, etc. has been realized. More interesting applications have been appeared, especially, when the device dimension is reached the micro/nano scale regime, in which many aspects of investigation become the challenge. In this book, we investigate the behavior of light(light pulse) within the micro and nano scale device(ring resonator), which can be integrated to form the device, circuits and systems that can be used for atom/molecule trapping and transportation, optical transistor, fast calculation device(optical gate), nanoscale communication and networks, and energy storage, etc. The large demand of small scale device, especially, with light signal processing is needed. This is a device(nano device) design and simulation which can be useful for practical in near future. © 2013 Pan Stanford Publishing Pte. Ltd. All rights reserved.

Srinuanjan, Keerayoot

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