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Detection of Salmonella bacterium in drinking water using microring resonator
(2016-01-01)
Bahadoran, Mahdi
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Noorden, Ahmad Fakhrurrazi Ahmad
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Mohajer, Faeze Sadat
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Abd Mubin, Mohamad Helmi
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Chaudhary, Kashif
A new microring resonator system is proposed for the detection of the Salmonella bacterium in drinking water, which is made up of SiO<inf>2</inf>-TiO<inf>2</inf> waveguide embedded inside thin film layer of the flagellin. The change in refractive index due to the binding of the Salmonella bacterium with flagellin layer causes a shift in the output signal wavelength and the variation in through and drop port's intensities, which leads to the detection of Salmonella bacterium in drinking water. The sensitivity of proposed sensor for detecting of Salmonella bacterium in water solution is 149 nm/RIU and the limit of detection is 7 × 10<sup>-4</sup>RIU.
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Modified add-drop microring resonator for temperature sensing
(2015-10-01)
Mohamad, Azam
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Bahadoran, Mahdi
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Noorden, Ahmad Fakhrurrazi Ahmad
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Aziz, Safwan
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Chaudhary, Kashif
A micro resonating sensor is proposed for simultaneous measurement of temperature and carrier density using modified Add-drop resonator called PANDA resonator from silicon-on-insulator (SOI) material waveguide. The proposed sensor works by observing the concentration of free-carrier in silicon around room temperature yielding the sensitivity of 1×1023 m-3 C-1 with limit of detection of 10-5 C. It is found that the output intensity decreases due to the photon and thermal absorptions. It is found that the performance of the PANDA sensor is affected by the power at the first coupling region and increase in propagating lengths of PANDA sensor causes a nonlinear effect in carrier density production.
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Rabi oscillation generation in the microring resonator system with double-series ring resonators
(2015-09-10)
Noorden, Ahmad Fakhrurrazi Ahmad
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Chaudhary, Kashif
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Bahadoran, Mahdi
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Aziz, Muhammad Safwan
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Jalil, Muhammad Arif
In this paper, a microring resonator (MRR) system using double-series ring resonators is proposed to generate and investigate the Rabi oscillations. The system is made up of silicon-on-insulator and attached to bus waveguide which is used as propagation and oscillation medium. The scattering matrix method is employed to determine the output signal intensity which acts as the input source between two-level Rabi oscillation states, where the increase of Rabi oscillation frequency with time is obtained at the resonant state. The population probability of the excited state is higher and unstable at the optical resonant state due to the nonlinear spontaneous emission process. The enhanced spontaneous emission can be managed by the atom (photon) excitation, which can be useful for atomic related sensors and single-photon source applications.
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All-optical hysteresis switching using mobius configuration microring resonator circuit
(2015-01-01)
Noorden, Ahmad Fakhrurrazi Ahmad
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Mohamad, Azam
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Bahadoran, Mahdi
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Chaudhary, Kashif
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Aziz, M. S.
The novel twisted ring resonator called add-drop Mobius microring resonator is introduced and modelled with the analytical solution of transfer matrix methods for the generation of optical bistability. Simulated results show that, the add-drop Mobius configuration provides greater phase shift due to the longer length of propagation per roundtrip than add-drop filter configuration. In add-drop Mobius system, drop port generated the optical bistable hysteresis loop with 19.25 mW output switching power and through port generated lower switching power as 5.55 mW. The drop port of the system is found as the suitable port for the operating the all-optical hysteresis switching.
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Effect temperature in chemical sensing using triple stage microring resonator
(2015-01-01)
Mohamad, Azam
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Bahadoran, Mahdi
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Aziz, Safwan
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Chaudary, Kashif
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Jalil, Muhammad Arif
The split-step Fourier technique is used to study the effect of temperature in triple stage microring resonating sensor (TSMRRS). The optical bright soliton beam is used as the probe pulse into the TSMRRS and the effect of temperature variations on various concentrations of glucose in deionize water is investigated. The detection of glucose is measured by intensity variations of output signals from through and drop ports of TSMRRS. The temperature variations cause an exact intensity reduction of glucose concentration in deionize water when the temperature increased by 1 °C. The performance of TSMRRS glucose sensor is improved for temperature range similar with standard room temperature which shows that TSMRRS is suitable candidate for chemical sensing application.
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Optical bistability in all-pass mobius configuration microring resonator
(2015-01-01)
Noorden, Ahmad Fakhrurrazi Ahmad
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Bahadoran, Mahdi
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Chaudhary, Kashif
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Aziz, Muhammad Safwan
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Jalil, Muhammad Arif
A novel design of microring resonator called all-pass Mobius ring resonator is used to study optical bistability effect and spectral transmission for all-optical switching application with clockwise hysteresis loop operation. The bright soliton pulse is applied as the input source of the system. The propagation of the pulses within the system is simulated using the transfer matrix analysis. The all-pass Mobius ring resonator is able to operate under high nonlinearity as it has longer propagation length per roundtrip. The all-pass Mobius provides low transmission peak power of 3.65 mW as compared to the conventional all-pass configuration. The output-to-input relation of both design shows that the Mobius configuration is able to generate a higher hysteresis loop width of the bistable signal from 15.79 mW to 18.10 mW input power. The switching power of the optical bistability in Mobius configuration is 3.67 mW for threshold power of 16.95mW. This work shows the Mobius configuration is more suitable to be used for all-optical switching application as compared to the conventional all-pass ring resonator configuration.
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Gold nanoparticle trapping and delivery for therapeutic applications
(2012-02-10)
Aziz, M. S.
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Suwanpayak, Nathaporn
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Jalil, Muhammad Arif
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Jomtarak, R.
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Saktioto, T.
A new optical trapping design to transport gold nanoparticles using a PANDA ring resonator system is proposed. Intense optical felds in the form of dark solitons controlled by Gaussian pulses are used to trap and transport nanoscopic volumes of matter to the desired destination via an optical waveguide. Theoretically, the gradient and scattering forces are responsible for this trapping phenomenon, where in practice such systems can be fabricated and a thin-film device formed on the specific artifcial medical materials, for instance, an artificial bone. The dynamic behavior of the tweezers can be tuned by controlling the optical pulse input power and parameters of the ring resonator system. Different trap sizes can be generated to trap different gold nanoparticles sizes, which is useful for gold nanoparticle therapy. In this paper, we have shown the utility of gold nanoparticle trapping and delivery for therapy, which may be useful for cosmetic therapy and related applications. © 2012 Aziz et al.
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Nanoscale nonlinear panda ring resonator
(2012-01-01)
Yupapin, Preecha P.
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Teeka, Chat
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Jalil, Muhammad Arif
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Ali, Jalil
Microring/nanoring resonator is an interesting device that has been widely studied and investigated by researchers from a variety of specializations. This book begins with the basic background of linear and nonlinear ring resonators. A novel design of nano device known as a PANDA ring resonator is proposed. The use of the device in the form of a PANDA in applications such as nanoelectronics, measurement, communication, sensors, optical and quantum computing, drug delivery, hybrid transistor and a new concept of electron-hole pair is discussed in detail.
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Multi soliton generation for enhance optical communication
(2011-09-01)
Afroozeh, Abdolkarim
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Amiri, Iraj Sadegh
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Jalil, Muhammad Arif
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Kouhnavard, Mojgan
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Ali, Jalil
We propose a new optical system that can be used to form the multi-soliton pulses within the micro-ring resonators. The system consists of two micro-ring resonators and an add/drop multiplexer that can be integrated into a single system. The large bandwidth signal is generated by using a soliton pulse propagating in a Kerr-type nonlinear medium. The tuned soliton pulses in either spatial or temporal modes are obtained by using the add/drop multiplexer. Results show the generation of multi-soliton pulses within the micro-ring resonator can be achieved for long distance communication. This results in an increase in the number of channels and spaces with a large freespectrum range (FSR) of 650 pm for dense wavelength division mul tiplexing (DWDM). © (2011) Trans Tech Publications, Switzerland.
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Nanoscopic volume trapping and transportation using a PANDA ring resonator for drug delivery
(2011-06-01)
Jalil, Muhammad Arif
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Tasakorn, Metha
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Suwanpayak, Nathaporn
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Ali, Jalil
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Yupapin, Preecha P.
A novel design of nanoscopic volume transmitter and receiver for drug delivery system using a PANDA ring resonator is proposed. By controlling some suitable parameters, the optical vortices (gradient optical fields/wells) can be generated and used to form the trapping tools in the same way as the optical tweezers. By using the intense optical vortices generated within the PANDA ring resonator, the nanoscopic volumes (drug) can be trapped and moved (transport) dynamically within the wavelength router or network. In principle, the trapping force is formed by the combination between the gradient field and scattering photons, which is reviewed. The advantage of the proposed system is that a transmitter and receiver can be formed within the same system (device), which is called a transceiver, which is available for nanoscopic volume (drug volume) trapping and transportation (delivery). © 2011 IEEE.

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