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In this paper, we consider plasmonic nanoantennas with different elliptical metal rods embedded in a two-arm grating. Elliptical metal rods support dipolar localized plasmon resonance with a localized plasmon resonance frequency that is affected with different metal materials. We discuss the properties and parameters of different elliptical metal rods using finite-difference time-domain method in...
In this paper, the electrical property of a geometric optimization with elliptical shape dimer nanoantennas has been studied. Numerical calculations are based on the method of finite-difference time-domain (FDTD). Three types of elliptical shape dimer nanoantennas with different geometrical parameters were considered, namely, horizontal dimer, parallel dimer, and parallel-horizontal dimer. We have...
A new all-optical switch based on the local nonlinear metal-insulator-metal (MIM) plasmonic Mach-Zehnder interferometer (MZI) waveguides was proposed. We used the finite-difference time-domain (FDTD) method to simulate the proposed structure. The numerical show that the proposed local nonlinear MIM plasmonic MZI waveguide structure could really function as an all-optical switch.
Green electronic products are more preferred in the recent era, especially in lead-free and halogen-free manufactures. A brand-new halogen-free solder resist, AUS320, provides the good performance, compared with the popular low-halogen AUS308 such as in halogen concentration, flatness on cavity surface and roughness on cross-section as well as the optical and thermal reactions.
The TO-46 header used for high speed VCSEL or PIN-TIA package is characterized through a specially designed K connector experimentally. An equivalent circuit model of the TO-46 header has been extracted. The TO-46 header is shown to be capable to be used in 25 Gb/s applications.
A cost-effective differential-mode packaging of the TO-46 VCSEL module is proposed. The optimal bonding-wire and package solution have been demonstrated through frequency-domain and time-domain simulations. The differential-mode modulation bandwidth of the VCSEL module of above 21 GHz is achieved and a clearly opening eye diagram of 25 Gbit/s is observed. The electrical characterization of the VCSEL...
We design a polarization-maintaining photonic crystal fiber (PCF) with elliptical air-holes. The asymmetric geometric structure is proposed for the polarization-maintaining PCF with higher birefringence.
We propose an ultra compact and low crosstalk triplexer based on the X-type photonic crystal structure. It has been shown that the striplexer with the size as small as 36μm2 can be designed at λ=1.55μm, λ=1.49μm, and λ=1.31μm.
We propose a new design of the polarization beam splitter based on photonic crystals at the wavelength 1.55µm. The numerical results show that the transmission efficiency is up to 91%.
This work demonstrates a novel Time Division Multiplexing (TDM) system by photonic crystal structures (PCs) with slow light design. Good results show TDM repetition signals by group velocity designed with over a bandwidth 7.01 THz.
An equivalent circuit model of a 25-Gbit/s coaxial laser module is built by extracting electrical characteristics of transistor outline (TO)-Can header, bonding wires, and load through ADS software. The frequency response and the eye diagram of the coaxial laser module are simulated under various source impedances.
In this study, we investigate the potential of a light-focusing device (LFD) for high coupling of self-collimated beams from two-dimensional photonic crystals. The high transmission power is higher than 70% by removing at z=8. The LFD consists of a slab waveguide to calculate its coupling efficiency, and the numerical results show the coupling efficiency is about 66%. The proposed LFD increase the...
In this paper, we proposed the design of directional coupler integrated with ring resonator based on photonic crystals (PCs) to develop a triplexer filter, which can separate the wavelengths at 1550nm, 1490m, and 1310nm.
In this paper, we proposed the design of directional coupler integrated with ring resonator based on two-dimensional photonic crystals (2D PCs) to develop a triplexer filter. It can be widely used as the fiber access network element for multiplexer-demultiplexer wavelength selective in fiber-to-the-home (FTTH) communication systems. The directional coupler is chosen to separate the wavelengths of...
In this paper, we propose an optical channel drop filter based on two-dimensional photonic crystals (2D PCs). The numerical results show the drop efficiency is closed to 100% and the crosstalk is less than -36 dB.
In this paper, we proposed a photonic crystal ring-resonator (PCRR) based on a quasiring shape. The numerical results show that the PCRR is feasible to design a high quality filter for accurate wavelength control.
We propose a new add-drop filters based on two dimensional photonic crystals (PCs). The structure consists of two PC waveguides and a resonant cavity system. We devise a triplexing coupler by 2D-FDTD method calculation, and the three wavelengths dropping efficiency are higher than 85% and the crosstalk are smaller than -28.6 dB.
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