Design Of Power Splitter Research Articles

Design, Fabrication, and Characterization of Si-Based ARROW-B Photonic Crystal Sharp-Bend Waveguides and Power Splitters

Si-based type-B antiresonant reflecting optical waveguide (ARROW-B) photonic crystal waveguides (PCWs) with 60° bend, 120° bend, and Y-branch power splitter were first successfully fabricated and characterized. A simple capsule-shaped defect was designed to modulate the 60° and 120° photonic crystal (PC) bend corners and Y-branch PC power splitters. In the preliminary experiments, the average bend losses of 60° and 120° PC bend waveguides for both polarizations were lower than 1.5 and 4.2 dB/bend, respectively. For the Y-branch PC power splitters, power imbalances for both polarizations were all lower than 0.7 dB. It shows that the fabricated Si-based ARROW-B PCWs can provide good light sharp-bend ability and power-split ability.

Detailed investigation of self-imaging in multimode photonic crystal waveguides for applications in power and polarization beam splitters

Properties of the self-imaging effect based on multimode interference (MMI) in multimode photonic crystal waveguides (PCWs) are investigated and analyzed in detail. By combining photonic band gap (PBG) and total internal reflection (TIR) effects in PCWs, self-imaging phenomena are achieved for both TE and TM polarizations. To observe the images reproduced by this self-imaging phenomenon, finite-difference time-domain (FDTD) simulations are performed on a multi-mode PCW. From these numerical simulations the reproduced images are identified and their positions along the propagation axis are described. We also, present the design and simulation of novel polarization-insensitive power splitter and polarization splitter. The simulation results show that the optimized devices have excellent transmission efficiencies as well as wide operating frequency bandwidths and small structure size. So, the proposed devices are promising and may play an important role in high-density photonic integrated circuits in the future.

Recent Advances in Metamaterial Transmission Lines Based on Split Rings

This paper is focused on metamaterial transmission lines based on split rings. Specifically, the considered lines are those based on the hybrid approach, where complementary split ring resonators (CSRRs) are combined with series gaps and shunt inductive stubs, and those implemented by loading a host line with open split ring resonators (OSRRs) and open complementary split ring resonators (OCSRRs). The dispersion characteristics and the characteristic impedance of such lines, essential for design purposes, are analyzed to the light of the lumped element equivalent circuit models of the lines. Finally, it is shown that hybrid lines are useful for the design of power splitters with filtering capability, and OSRR/OCSRR-loaded lines are of interest for the design of wideband bandpass filters. The achieved performances are satisfactory and device dimensions small.

Design and fabrication of polymeric multimode power splitter with secondary asymmetric branches

A novel design of multimode light power splitter is proposed and fabricated by using secondary asymmetric Y branches. An almost equally divided output among output terminals is obtained experimentally. Maskless laser direct writing technique is applied in the fabrication process to facilitate the formation of power splitters by ultraviolet curable polymer. The analysis of the performances of both four-port and eight-port devices shows that these two dividers obtain a power splitting uniformity of more than 95%.

光子晶体波导定向耦合功分器的设计

光子晶体波导定向耦合功分器的设计

基于非对称圆弧Y分叉单元的多模光功率分配器结构设计

基于非对称圆弧Y分叉单元的多模光功率分配器结构设计

可调光功率分束器设计与分析

可调光功率分束器设计与分析

基于非对称圆弧Y分叉单元的多模光功率分配器结构设计

基于非对称圆弧Y分叉单元的多模光功率分配器结构设计

可调光功率分束器设计与分析

A novel tunable optical power splitter, with a Y-branch waveguide based on the total internal reflection and a microprism with tunable index refraction, is presented. Numerical simulation of its optical performance shows that a high dynamic range, low optical loss, and relatively low wavelength-dependence can be achieved. This component offers numerous advantages such as ease for fabrication, low cost, and compact size, which are very useful for potential application in integrated optical devices.

Design and analysis of a novel tunable optical power splitter

Design and analysis of a novel tunable optical power splitter

基于非对称圆弧Y分叉单元的多模光功率分配器结构设计

基于非对称圆弧Y分叉单元的多模光功率分配器结构设计

Design of novel power splitters by directional coupling between photonic crystal waveguides

The design of a novel photonic crystal waveguide power splitter is presented. The proposed power splitter has three output ports, the coupling among three parallel photonic crystal waveguides can be considered as a multimode interference (MMI), and the positions of output waveguides are determined by those of twofold images which are formed by the self-imaging effect of multimode interference. The transmission characteristics of the splitter are investigated by using the finite-difference time domain (FDTD) and the plane wave expansion method. The output optical power in each port can be controlled by adjusting the radius of the dielectric rods in the coupling region, and the coupling effect among output ports is decreased by using the T-shaped output port. The results indicate that 1× 1, 1×2 and 1×3 type power splitters can be realized when the normalized radius of dielectric rods in the coupling region is 0.130, 0.180, 0.152 or 0.221, respectively.

3 dB power splitter design based on coupled cavity waveguides

Using numerical simulations, we investigated the transmission properties for coupled cavity waveguides form in two-dimensional photonic dielectric rods in air with square lattice. The dispersion for the coupled cavity waveguides with different radius of the defects is given. The optimum design waveguide should be perfect transmission for pulse though with a quasi-flat dispersion band. Based on the coupled cavity waveguides, a 3 dB power splitter is designed. Our results may have an important role in the design of efficient power splitters in a photonic circuit.

Design of efficient photonic crystal bend and power splitter using super defects

We propose a new scheme for an efficient photonic crystal 90° bend and power splitter. First we design a 90° bend by placing a super defect at the junction of two orthogonal photonic crystal waveguides. We changed the parameters of the super defect to optimize the transmission coefficient of the bent structure. Our two-dimensional (2D) simulations show more than 85% efficiency over a wide range of wavelengths. Then using this new scheme and adding another waveguide we design a new power splitter and optimize it with the same procedure. We used the coupled mode theory to analytically investigate the structures and finite difference time domain to simulate and optimize the structures performances.

Design of a novel Wilkinson power splitter based on the left‐handed transmission line

AbstractThe present paper proposes a novel design of a Wilkinson power splitter, which utilizes the nonlinear dispersion characteristic of a left‐handed transmission line (LHTL). The proposed device has been fabricated using the lumped L‐C −λ/4 LHTLs instead of the conventional TLs to implement branch arms. It has effectively improved the bandwidth of return loss and isolation, and reduced the whole size of the device as well. The measured results show good consistent with the simulation results. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2975–2977, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22896

Power splitter design for two-element antenna array with high mutual coupling

Design principles for a power splitter driving a strongly coupled two-element handset array antenna have been derived and studied. Splitter circuits using lumped elements and distributed microstrip elements were designed and tested. The results show reasonable agreement between measured and theoretical results.

Photonic-crystal-based beam splitters

We proposed and demonstrated two different methods to split electromagnetic waves in three-dimensional photonic crystals. By measuring transmission spectra, it was shown that the guided mode in a coupled-cavity waveguide can be splitted into the coupled-cavity or planar waveguide channels without radiation losses. The flow of electromagnetic waves through output waveguide ports can also be controlled by introducing extra defects into the crystals. Our results may have an important role in the design of efficient power splitters in a photonic circuit.

Useful formulas for multimode interference power splitter/combiner design

Simple design formulas for optical power splitters with an arbitrary number of output ports (1*N) are presented. They are obtained using a model based on the interference of the confined modes of a multimode wide section. These formulas provide the correct dimensions of the device, plus the output phase relations and output guides location. The accuracy of these formulas is further demonstrated by the design and fabrication of a buried heterostructure waveguide power splitter on InP, compatible with laser integration, that yield compact and low insertion losses devices. >