Double Vision Model Using Space-Time Function Control within Silicon Microring System

Silicon - This paper presents the use of space and time function applied simultaneously into the silicon microring system arrangement for double vision problem solving and enhancement. The eye...     

Multi-wavelength Čerenkov radiations in a microring resonator in combination with two gratings

In this paper, the ?erenkov radiation of light pulse in a microring and gratings is simulated and investigated. The system design consists of a two-defect grating incorporating a microring, connected with a uniform grating. In simulation, the continuous wave (CW) light pulse with wavelength centered at 1.55 µm is input into the microring device via the two-defect grating. The resonant outputs from the two-defect grating propagate through the microring and uniform grating, where the time delays of those two input pulses with different wavelengths through the system are distinguished by the output uniform grating. From the obtained resonant output pulses, we find that the red-shifted and blue-shifted ?erenkov pulses are observed. In applications, such a proposed system can be used to form two different optical delay pulses, in which the change in ?erenkov radiation of them, i.e., time delay within a microring device system, can be useful for ?erenkov radiation imaging and sensing applications.     

Rabi oscillation generation in the microring resonator system with double-series ring resonators

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.     

Mode-locked thulium doped fibre laser with copper thin film saturable absorber

We demonstrate the generation of mode-locked Thulium-Doped Fibre Laser by employing a newly developed saturable absorber (SA) based on copper (Cu) thin film. The SA was prepared by depositing nano-sized particles of Cu onto the surface of polyvinyl alcohol (PVA) film through the E-Beam evaporation process. A stable mode-locking pulse train operating at 1951?nm was successfully generated by introducing the Cu PVA SA into a laser cavity. The laser generated a pulse train at the fundamental frequency of 8.5?MHz with a calculated minimum pulse width of 14.8?ps. This demonstration proves that the Cu PVA based SA is suitable for generating mode-locked fibre laser at 2?µm region.     

Ultra-High Capacity FSK Transmission Using Silicon Microring Embedded Gold Grating Circuits

Silicon - The Frequency Shift Keying (FSK) dual-transmission mode for short-range communication using the silicon microring resonator arrangement is proposed. FSK generated by an optical modified...     

Array waveguide grating model for nanoparticle sensor applications

The grating coupling surface plasmon polariton (SPP) waveguide is designed for nanoparticle sensors applications, where the properties of SPP waveguide model such as grating length and grating space length are designed with the Matlab and Optiwave programs. The propagation vector β of SPP grating slot waveguide is evaluated, from which the sensor applications model are simulated by the finite difference time domain method. The effective permittivity of the nanoparticle solution is evaluated. The sensor models are selected and the effective permittivity of the nanoparticle solution and used in the simulation model. The sensor activity of waveguides is determined with various values of the permittivity of grating space. The simulation result shows that the surface plasmonic TM₀ mode of the design model is depended on a resonance with input wavelength, period length, space length, number of the grating, the permittivity of grating space, and the nanoparticle concentration in grating space area. It shows that the cut off wavelength is shipped by the refractive index of grating space, while the result of simulation at some low IR wavelengths shows linear relative between H_y field intensity of TM₀ mode and grating space refractive index. The graph between H_y field intensity and concentration of nanoparticle solution also shows a good linear function, which has the good potential for sensor applications.

     

Characteristics of microring circuit using plasmonic island driven electron mobility

Microsystem Technologies - The plasmonic electronic component consists of the stacked layers of silicon–graphene–gold materials can be integrated with the driven group velocity system,...     

3D‐quantum interferometer using silicon microring‐embedded gold grating circuit

A 3D (three‐dimensional) quantum interferometer consisting of a silicon microring circuit proposed. The interferometer based on the electron spin cloud projections generated by microring‐embedded gold grating. The electron cloud oscillations result from the excitation of the gold grating at the center of the silicon microring by the dark soliton pulse of 1.50 μm center wavelength. The electron cloud spin‐down, spin‐up automatically formed in the two axes (x, y, respectively) and propagated along the z‐axis. In this proposal, the sensing mechanism of the circuit is manipulated by varying the reflector gold lengths of the sensing arm. The electron cloud spin coupled and changed by changing the gold lengths. The sensitivity measurement of the 3D quantum interferometer for three gold layer lengths of 100 nm, 500 nm, and 1,000 nm is (47.62 nm fs^?1, ±0.4762 fs^?1, ±0.01 nm^?1), (238.10 nm fs^?1, ±0.4762 fs^?1, ±0.002 nm^?1), (476.20 nm fs^?1, ±0.4762 fs^?1, ±0.001 nm^?1), respectively. The used circuit parameters are the real ones that can be fabricated by the currently available technology. Moreover, the silicon micro ring circuit acts as a plasmonic antenna, which can apply for wireless quantum communication. The electron cloud spin projection space–time control can apply for quantum cellular automata.     

Novel all-optical logic gate using an add/drop filter and intensity switch

A novel design of all-optical logic device is proposed. An all-optical logic device system composes of an optical intensity switch and add/drop filter. The intensity switch is formed to switch signal by using the relationship between refraction angle and signal intensity. In operation, two input signals are coupled into one with some coupling loss and attenuation, in which the combination of add/drop with intensity switch produces the optical logic gate. The advantage is that the proposed device can operate the high speed logic function. Moreover, it uses low power consumption. Furthermore, by using the extremely small component, this design can be put into a single chip. Finally, we have successfully produced the all-optical logic gate that can generate the accurate AND and NOT operation results.     

Simple and efficient estimation of I–V photovoltaic using nonlinear curve fitting equivalent circuit model in Lambert W function form

Journal of Computational Electronics - A new and simple computational technique to estimate efficiently and extract key parameters of PV cells and modules are proposed using experimental...