Ring Resonator System Research Articles

WGMs on-Chip Design for Interdisciplinary Studies

Light in a PANDA ring resonator system for coated and uncoated materials have been proposed and discussed. The input waves (lights) can be in the forms of soliton, Gaussian pulses, photon or matter wave. The trapped electron motion around the PANDA ring can also be generated, in which the matter wave concept is formed within the PANDA ring waveguide. From the results, we found that the whispering gallery mode (WGM) can be generated due to coupling effects of the two nonlinear side rings, which have shown many interesting results and aspects. We found that four behaviors of light, for instance, fast, slow, stopping and storing can be manipulated and seen simultaneously by PANDA ring planar waveguide, which can be fabricated and tested on-chip, which is also suitable to implement in the laboratory.

LIGHT PULSE IN A MODIFIED ADD-DROP OPTICAL FILTER FOR OPTICAL TWEEZERS GENERATION

A new technique of optical tweezer generation and rotation within a modified add-drop optical filter is presented. A proposed system is made up of silica and InGaAsP / InP consisting of linear optical add-drop filter incorporating two nonlinear nanorings on both sides of the micro ring. This particular configuration is known as a "PANDA" ring resonator. Light pulse, for instance, Gaussian, bright and dark solitons are fed into the system through different ports such as drop port and through port. By using the practical device parameters, the simulation results are obtained using the Optiwave and MATLAB programs. Results are obtained by both analytical and numerical methods, which found that the orthogonal solitons can be generated using the proposed system. The tweezer rotation is formed by the spin-up and spin-down states for the input signals, created by using transverse electric and magnetic field within the PANDA ring resonator system. The output signals can be controlled by system parameters such as ring radii, coupling constants, input signals and applied to various applications for tweezer spins such as trapping, transportation and rotation, which can be useful for molecular motor applications.

Force-induced optical nonlinearity and Kerr-like coefficient in opto-mechanical ring resonators

This paper demonstrates the optical nonlinearity in opto-mechanical ring resonators that consist of a bus waveguide and two ring resonators, which is induced by the optical gradient force and characterized by the Kerr-like coefficient. Each ring resonator has a free-hanging arc that is perpendicularly deformable by an optical gradient force and subsequently this deformation changes the effective refractive index (ERI) of the ring resonator. The change of the ERI induces optical nonlinearity into the system, which is described by an equivalent Kerr coefficient (Kerr-like coefficient). Based on the experimental results, the Kerr-like coefficient of the ring resonator system falls in the range from 7.64 × 10(-12) to 2.01 × 10(-10) m(2)W(-1), which is at least 6-order higher than the silicon's Kerr coefficient. The dramatically improved optical nonlinearity in the opto-mechanical ring resonators promises potential applications in low power optical signal processing, modulation and bio-sensing.

High-capacity radio frequency identification-based radio over fiber system

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. Microwave Opt Technol Lett 54:1637–1642, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26899

Blood Circulation Manipulation within Molecular Buffer and Bus Network for Molecular Diagnosis Use

In this paper, the use of molecular buffer and network for molecular diagnosis is presented. The trapping molecule is formed and transmitted into the required target via the molecular buffer and bus network. The optical trapping tool in the application of blood circulation manipulation analysis use the PANDA ring resonator system incorporating with bus network. The trapping force is formed by the combination of the gradient field and scattering photons. By using the blood circulation system, the blood pressure control, molecular diagnosis, and in situ surgery can be provided.

Optical-force-induced bistability in nanomachined ring resonator systems

This paper reports optical-force-induced bistability in a nanomachined ring resonator system. It consists of two ring resonators and a bus waveguide, whereby each ring resonator has a free-hanging arc that is perpendicularly deformable by an optical force and changes the effective refractive index of the system. Therefore, an optical bistability is induced into the nanomachined ring resonator system, in which the bistability band can reach 0.3 nm and 0.68 nm in the ring resonators 1 and 2, respectively. It has potential applications in optical signal processing area, such as all-optical switching and opto-mechanical memory.

ENHANCEMENT OF FSR AND FINESSE USING ADD/DROP FILTER AND PANDA RING RESONATOR SYSTEMS

We present effect of the input central wavelength on microring resonator (MRR) performance using proposed systems. The first proposed system consists of series of microring resonator incorporated with an add/drop filter system, while the second system uses a PANDA ring resonator connected to an add/drop filter system. These two systems can be used to enhance the free spectrum range (FSR) and finesse (F) of the optical soliton pulses. The FSR and Finesse can be improved by raising the central wavelengths of the input pulse from 0.6 μm to 1.5 μm. This is obtained via the add/drop filter, which is used to increase the channel capacity of the communication networks as well. Simulation results for the first proposed system show that FSR and FWHM of 1530 pm and 50 pm can be obtained when the central wavelength of the input pulse is 1.5 μm. FSR and FWHM of 370 pm and 5 pm are simulated, when the PANDA ring resonator system is used. Therefore Finesse of the systems can be improved to 30.6 and 74 for the first and second proposed system, respectively.

A novel optical radio on fiber multi-channel by micro ring resonator system

We propose a novel system that can be used to generate the new optical radio on fiber communication continuous variable channel using a Gaussian pulse propagating within a nonlinear micro-nanoring resonator system. By using the wide range of the Gaussian input for instance, when the input pulses of the common lasers with centre wavelengths from 1,300nm are used, which this system is simple for used. Results obtained have shown that more available wavelength bands and frequency domain(THz) from the different ring parameter and wavelengths can be generated, which can be used to form new optical to high frequency ranges, whereas the use of the very high channel capacity for personal wavelength and very high security and multi-channel in network applications is plausible.

All-Optical Nanoscale Microring Device and System Design for Nano Communication

In this paper, we have shown that the two components (TE and TM waves) of polarized light are manipulated by using the orthogonal soliton pair within a PANDA ring resonator known as a dark-bright soliton pair. In operation, the orthogonal soliton sets can be generated by using the system. The optical field is fed into the ring resonator system, which is controlled by an optical switch by using a single microring. To form the initial spin states, the magnetic field is induced by an aluminum plate (Al) coupled on AlGaAs waveguides for optoelectronic spin-up and - down states. The optoelectronic spin is formed by using the TE and TM wave components. In this manipulation, the electromagnetic radiation is formed by using the orthogonal soliton pulses. In fact, they are photons, which behave like elementary particles. Hence, the spin axis of photon is always parallel to its direction of motion. Many orthogonal sets are also available and existed, in which the spin conservation of many particles is maintained for large scale system use. Therefore, for future applications, the use for high performance storage, low power magnetic logic, quantum logic, quantum gate, nano antenna, nano radio, and applications of spintronic sensing can be realized based on realistic device parameters.

Privacy Amplification of QKD Protocol in a Quantum Router

We propose a new system of quantum cryptography for QKD protocol with privacy amplification for internet security using Gaussian pulse propagating within a nonlinear ring resonator system, quantum processor and a wavelength router. To increase the channel capacity and security, the multiplexer is operated incorporating a quantum processing unit via an optical multiplexer. The transmission part can be used to generate the high capacity quantum codes within the series of micro ring resonators and an add/drop filter. The receiver part can be communicated by using the quantum key (quantum bit, qubit) via a wavelength router and quantum processors. The reference states can be recognized by using the cloning unit, which is operated by the add/drop filter, where the communication between Alice and Bob can be performed. Results obtained have shown that the correlated photons can be generated and formed the entangled photon pair, which is allowed to form the secret key between Alice and Bob. In application, the embedded system within the computer processing unit is available for quantum computer.

Gold nanoparticle trapping and delivery for therapeutic applications.

A new optical trapping design to transport gold nanoparticles using a PANDA ring resonator system is proposed. Intense optical fields 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 artificial 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.

Electro-Optic Tuneable of Direct Current Voltage in Ring Resonator

In this paper, a new design of the electro-optical tuning voltage in buried fiber ring resonator (BFRR) system is proposed. The crystals of LiNbO3, (Ba, Sr)TiO3, K(Ta, Nb)O3 and KH2PO4 are used as electro-optic core materials. The applied voltage can generate different refractive index deformation when used different electro-optic crystals. Different electro-optic crystals produce distinct maximum power loss within BFRR. The power loss in an electro-optic crystal can be controlled by tuning the applied voltage. The K(Ta, Nb)O3 crystal produce maximum power loss with lower voltage compared to other crystals.

Pattern formation in a passive incoherent ring resonator system based on nonlinear material with the self-focusing non-instantaneous Kerr response

We have analyzed the pattern formation in a nonlinear medium with self-focusing non-instantaneous Kerr response by employing the passive incoherent ring resonator system. In such a system, coherence time of the light is much shorter than the time of one round trip in the resonator. This delayed response of the nonlinearity can amplify the noise of certain spatial frequencies of the perturbed wave field and thus patterns can form when nonlinear gain (i.e., amplification of the noises) overcomes the loss (i.e., a well defined cavity threshold set by the coherence properties) in a single pass. The expression for the spatial spectral density of the perturbed wave field, which is the characteristic parameters of the pattern formation, have been derived in the case of lowest order approximation. It is found that for a specific value of the spatial frequency of the perturbed wave field, the intensity feedback of the cavity is much effective factor rather than the crystal thickness of the nonlinear media and amplitude of the incoming beam in the cavity for the enhancement of the spatial spectral density of the intensity pattern, which greatly improved the performance and applications of the pattern formation such as information processing, symmetry-breaking, and dynamics in non-equilibrium systems.

Complex-number asymmetry parameters of the optical Fano effect in ring resonators

We studied the sharp asymmetric Fano line shape in fiber ring resonator systems and provided an explicit expression for asymmetry parameters using the physical parameters of the system. The fiber ring system was controllable and reconfigurable, allowing us to produce a variety of Fano line shapes in different configurations. Experimentally observed asymmetric spectral structures were fully reproduced using the complex-number asymmetry parameters, validating the approximations used to reduce the analytical expression for the line shape to the phenomenological Fano formula. The results may be useful in the design of on-chip application systems.

Crosstalk effects of quantum key distribution via a quantum router

AbstractWe propose a new system of quantum cryptography for internet security using Gaussian pulses propagating within a nonlinear ring resonator system, quantum processor and a wavelength router.To increase the channel capacity and security, the multiplexer is operated incorporating a quantum processing unit via an optical multiplexer. The transmission part can be used to generate the high capacity quantum codes within the series of microring resonators and an add/drop filter. The receiver part can be communicated by using the quantum key (quantum bit, qubit) via a wavelength router and quantum processors. The reference states can be recognized by using the cloning unit, which is operated by the add/drop filter, where the communication between Alice and Bob can be performed. The results obtained have shown that the correlated photons can be generated and formed the entangled photon pair, which is allowed to form the secret key between Alice and Bob. In application, the embedded system within the computer processing unit is available for quantum computer. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1094–1099, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25942

Generation of DSA for Security Application

A novel system of dark soliton array (DSA) for secured communication generated by using the multiplexed dark soliton pulses is proposed. The multi soliton pulses with relevant parameters are input into the micro ring resonators system with the radii of 10μm and 5μm. The dynamic dark solitons can be controlled and generated. The DSA are obtained by using a series micro ring resonators with parameters where in the wavelength range of _1 is 15016nm, _2 is 1518nm and _3 is 1520nm. For security applications, the DSA can be tuned and amplified. Thus, the use of DSA for high capacity transmission can be realized by using proposed secured system. In transmission, the long distance link of the multi variable network can be performed by this DSA.

Multi Light Sources Enhancement using Double PANDA Ring Resonators

We propose the interesting results of light pulse propagation within a double PANDA ring resonator system. We use the technique of Finite Difference Time Domain (FDTD) which is implemented by the scientific programming method known as OPTI-WAVE PROGRAMMING to simulate and analyze the dynamic wave forms of propagating light pulse within the desired system. By using the input Gaussian pulse with center wavelength at 1,300nm and the other practical parameters into the system, results obtained have shown that the multi wavelength light sources can be generated and achieved, and the dynamic behaviors of pulses propagation within the system can be seen.

Analytical Treatment of Parametric Effects in a Ring Resonator

We propose two systems of a nano-waveguide to study the effects of ring resonator radii and coupling coefficient. The first proposed system is introduced as a single ring resonator. The change of the center wavelength from the output signal is monitored and analyzed. It shifts towards higher wavelength of the spectrum. The multistage ring resonator system consists of two micro and a nano ring resonators that can be integrated into a single system. The soliton pulse propagating within a Kerr type nonlinear medium is used to generate the large bandwidth signals. By using the suitable parameters, for instance, the input power of soliton, coupling coefficients, and ring radii, the short-wave and millimetre-wave output signals can simultaneously be generated in a multi-stage ring resonator (MMRR). We found that by using the MMRR, a desired response can be achieved over a broader portion of the spectrum compared to the single-stage ring resonator (SMRR) in which it is more preferable in applications.

THz light pulse generated and storage by using a Gaussian pulse within a waveguide system

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.

Mathematical simulation of light pulse propagating within a microring resonator system and applications

This paper presents the very fascinating simulation results of light pulse traveling within a ring resonator system that have shown the unexpected results with various applications. The design system consists of a nonlinear microring/nanoring resonator system incorporating an add/drop filter. The proposed fabricated material used is InGaAsP/InP, which can provide the required output behaviors. Three different forms of input light pulses are Gaussian pulse, dark and bright soliton, whereas the suitable simulation parameters are input power, pulse width, ring radii and the material refractive indices. Three different forms of the results have been interpreted, whereas the dominants behaviors are such as Gaussian soliton, multisoliton and tunable dark soliton are described, and the potential applications for new laser sources, new communication bands and dynamic optical tweezers have been discussed.