KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Search Results

Now showing 1 - 10 of 21

Some of the metrics are blocked by your
consent settings
High frequency generation based-on nonlinear micro ring resonator for frequency band enhancement
(2014-01-01)
Udomariyasap, P.
;
Noppanakeepong, S.
;
Pornsuwancharoen, N.
Propose the simulation of THz carrier frequencies using the small device and a Gaussian beam propagating within the device system. We found that the generated output power with the high frequency can be achieved. This consisted of a serial nonlinear micro ring resonator system for generating pulse and signal filter by Add/Drop filter, a technology optical communication by the micro ring resonator which generates the THz frequency multiple, whereas channel capacity in term of multi frequency bands can be provided by optical Add/Drop multiplexing. The increase in the number of channel capacity can be obtained by the increase in frequency density, while the security was introduced by the specific frequency filter, which was operated by the central operator. The optical micro ring resonators for THz frequency generation and enhancement are reviewed. The advantage of proposed system can be implemented by using the simultaneous optical communication system. © (2014) Trans Tech Publications, Switzerland.
Some of the metrics are blocked by your
consent settings
High-capacity radio frequency identification-based radio over fiber system
(2012-07-01)
Udomariyasap, P.
;
Noppanakeepong, S.
;
Mitatha, S.
;
Yupapin, P. P.
We present the use of a serial ring resonator system for multichannel radio frequency generation that can be used to form the radio frequency identification (RFID) application. A system consists of a serial nonlinear microring resonator system for generating pulse and selecting signals that can be filtered by using the add/drop filter. The input pulse is a Gaussian pulse with center wavelength at 1,500 nm. By using suitable simulation microring parameters, the generation of signal with the center wavelength or frequency at 2.15 nm or 285 GHz is achieved, where the high frequency RFID with 91 channels is generated and noted. The use of THz frequency enhancement and RFID-based wireless communication is discussed. © 2012 Wiley Periodicals, Inc.
Some of the metrics are blocked by your
consent settings
Highly capacity RFID generated by a soliton pulse within a panda ring resonator
(2012-05-01)
Mitatha, S.
;
Udomariyasap, P.
;
Noppanakeepong, S.
;
Yupapin, P. P.
A new design of THz frequency carrier generation for radio frequency identification (RFID) application is presented. The dense wavelength division multiplexing can be generated and obtained by using a Gaussian or soliton pulses propagating within a modified add-drop filter known as a PANDA ring resonator. A system is consisted of a serial nonlinear microring resonator system. The broad bandwidth of THz signals can be obtained and available for useful applications. The selected signals can be filtered and obtained by using the add/drop filter. Results obtained have shown that the increasing in channel capacity can be obtained and useful for the large demand of RFID applications. © 2012 Wiley Periodicals, Inc.
Some of the metrics are blocked by your
consent settings
THz light pulse generated and storage by using a Gaussian pulse within a waveguide system
(2011-09-01)
Udomariyasap, P.
;
Noppanakeepong, S.
;
Mitatha, S.
;
Yupapin, P. P.
We propose the interesting results of high frequency generation method, which is required to use in the THz regime. A generated system consists of two micro and a nano rings that can be integrated into a signal system which can be employed to generate the large bandwidth by a Gaussian pulse propagating within the ring resonator system. The selected signals can be stored and filtered by using the optical storage unit and an add/drop filter, respectively. By controlling the ring parameters, the appropriate output power can be obtained, which can be modified to be suitable in either imaging or communication applications. Moreover, the very wide band of wavelength can be generated and controlled for various applications. © 2010 Elsevier GmbH. All rights reserved.
Some of the metrics are blocked by your
consent settings
THz light pulse generation and storage within an embedded optical waveguide system
(2010-05-05)
Udomariyasap, P.
;
Noppanakeepong, S.
;
Mitatha, S.
;
Yupapin, P. P.
We propose the interesting results of high frequency generation method, which is required to use in the THz regime. A generated system consists of two micro and a nano rings that can be integrated into a signal system which can be employed to generate the large bandwidth by a Gaussian pulse propagating within the ring resonator system. The selected signals can be filtered by using the optical add/drop filter. By controlling the ring parameters, the appropriate output power can be obtained, which can be modified to be suitable in either imaging or communication applications. Moreover, the very wide band of wavelength can be generated and controlled for various applications. ©2010 IEEE.
Some of the metrics are blocked by your
consent settings
Dynamic optical tweezers: Experiment
(2010-05-05)
Mitatha, S.
;
Noppanakeepong, S.
;
Ali, J.
;
Yupapin, P. P.
We have experimentally generated the optical tweezers in the form of a dark soliton pulse using the Stimulated Brillouin Scattering (SBS) system. This is the first time ever found on the use of the highly intense pulse in the form of a dark soliton to perform the dynamic light trapping probe known as a "dynamic optical tweezers". The advantage of the generated tweezers is that it can be used to transmit and transport the trapping atom/molecule into the optical device and communication network, which can be claimed as the dynamic optical tweezers transportation, for used in many frontier applications. The multi-optical tweezers generated, with high capacity regime can then be used for multi-optical tweezers transmission. The various applications to form the frontier research using photon, atom, molecule, DNA, electron and ion trapping for atomic tools, tiny synchrotron, molecular networks, bottom up atom/molecule assembly, ozone repair etc. are described. The experimental details and model of the optical tweezers generation and related characteristics are described. The interesting simulation results of a dark soliton generation for the optical tweezers are also analyzed and discussed in various applications. ©2010 IEEE.
Some of the metrics are blocked by your
consent settings
THz light pulse generation and storage within an embedded optical waveguide system
(2010-01-01)
Udomariyasap, P.
;
Noppanakeepong, S.
;
Mitatha, S.
;
Yupapin, P. P.
We propose the interesting results of high frequency generation method, which is required to use in the THz regime. A generated system consists of two micro and a nano ring that can be integrated into a signal system which can be employed to generate the large bandwidth by a Gaussian pulse propagating within the ring resonator system. The selected signals can be filtered by using the optical add/drop filter. By controlling the ring parameters, the appropriate output power can be obtained, which can be modified to be suitable in either imaging or communication applications. Moreover, the very wide band of wavelength can be generated and controlled for various applications. © 2010 World Scientific Publishing Company.
Some of the metrics are blocked by your
consent settings
Novel molecular networking via a simultaneous optical wireless up-down link systems
(2010-01-01)
Udomariyasap, P.
;
Noppanakeepong, S.
;
Mitatha, S.
;
Yupapin, P. P.
In this paper, we present the interesting results of THz carrier frequency generation using the small device system for high frequency generation. Simulation results are obtained by using a Gaussian beam propagating within the nonlinear device system, which is required to use in the THz regime. A generated system consists of a micro and nano rings that can be integrated into a single system, which can be employed to generate the large bandwidth of high frequency bands by a Gaussian pulse propagating within the ring resonator system incorporating an add/drop filter. The multiplexed transporters are generated and multiplexed via add/drop filter, which can be used for high capacity molecular signal processing in the communication system. By controlling the ring parameters, add/drop filter to increase the input add port, the appropriate output power can be obtained, which can be modified to be suitable for nano-scale communication applications. Moreover, the very wide band of wavelength can be simultaneously generated and controlled for various applications. Moreover, we found that the generated output power with the THz frequency carrier regime can be achieved.
Some of the metrics are blocked by your
consent settings
Modeling and measurement of airplane flutter phenomena on TV broadcasting signal
(2008-06-01)
Wongkeeratikul, A.
;
Supnithi, P.
;
Noppanakeepong, S.
;
Leelaruji, N.
;
Hemmakorn, N.
This paper presents a novel approach to model TV signal due to airplane flutter phenomena. The three components of the modeling are based on 1) Bistatic radar cross sections (RCS) of an ellipsoid, 2) 3-dimensional geometry consideration technique to calculate the distance difference between direct and reflected waves due to airplane, and 3) Ray theory, based on physical and geometrical consideration. Unlike previous works, the model takes into account of realistic parameters such flying height, distance from the airport, flying angle, altitude, aircraft body type and others. The simulation results are then compared with measurement results at 60.75 MHz and 208.75 MHz. The results have shown good agreement between simulation and measurement patterns. © 2008 IEEE.
Some of the metrics are blocked by your
consent settings
Indirect detection of multi-wave length for infrared wireless communications in the room and public area services
(2003-01-01)
Sudkaew, S.
;
Sartthong, J.
;
Noppanakeepong, S.
;
Manyanon, A.
In this paper, optical multi-wavelength modulation is proposed to reduce the effects of intersymbol interference (ISI) on the artificial light noise and multi path channels. The noise model in the room is the Additive White Gaussian Noise (AWGN), and multi wavelength optical modulation schemes are used for On Off Keying (OOK). An infrareds link in the room or public area services used Intensity Modulation and Direct Detection ( MD ). The normal room and some interior in this case are used to study the obstruction and the reflex effect to the communications speed rate at 10-100Mbps. Finally each performance of BER per Transmitted light power of Multi-wavelength Infiared system is compared. The carrier characteristic of Multi-wavelength wiIl be improved to be same as RF- carriers on mobiles applications.

KMITL

Browse

Filters

Settings

Sort By

Results per page

Search Results