Meep or meep is a free finitedifference timedomain fdtd simulation software package developed at mit to model electromagnetic systems, along with our mpb eigenmode package. Electromagnetic confinement via spinorbit interaction in. A full portable package for windows user to use mits meep simulator in cpp code. The nninc at the university of michigan will be hosting a workshop on a flexible, freesoftware package for electromagnetic simulations by the fdtd method. The nascent field of hightemperature nanophotonics could potentially enable many important solidstate energy conversion applications, such as thermophotovoltaic energy generation, selective solar absorption, and selective emission of light. In order to design photonic crystals to take advantage of their unique properties, a calculation method is necessary to determine how light will propagate through a. The conversion is achieved based on contradirectional mode coupling. I used fdtd software called meep to simulate its behavior. An integratednanophotonics polarization beamsplitter with. Meep user guide jeffrey chen spring 2015 introduction. In this cell, a thinfilm, plasmonic metamaterial structure acts as both an efficient photon absorber in the visible frequency range and a plasmonic resonator in the ir range, the latter of which absorbs and.
Finitedifference timedomain or yees method is a numerical analysis technique used for. This blog post is will describe in detail step by step how to get started and work on meep. Source implementation and the effects of various boundaries such as. A flexible freesoftware package for electromagnetic. The name meep is an acronym for mit electromagnetic equation propagation. Finitedifference timedomain or yees method named after the chinese american applied mathematician kane s. Advances in fdtd techniques and applications in photonics. Nov 22, 2016 using meep free software developed by mit.
With oqp, high efficiency chiptochip optical coupling can be achieved by aligning waveguides of separate chips with submicron accuracy and reducing chiptochip distance. Crystal evaluated by dynamic optical chynoweth method and converter design. The nninc at the university of michigan will be hosting a workshop on meep. Vlc media player robust player of virtually any format. Design of a compact mode and polarization converter in threedimensional photonic crystals jian wang and minghao qi school of electrical and computer engineering, and birck nanotechnology center, purdue university, west.
The finitedifference timedomain method fdtd the finitedifference timedomain method fdtd is todays one of the most popular technique for the solution of electromagnetic problems. My research concerns the application of novel concepts in nanophotonics to issues of pressing interest to society, both in terms of basic understanding as well as practical applications particular topics of interest to me are photovoltaics the conversion of sunlight into electricity as well as thermophotovoltaics the conversion of heat into electricity, via the thermal radiation of. The device converts the indexguided te mode of a w1 solidcore sc waveguide to the bandgapguided tm mode of a w1 hollowcore hc waveguide in 3d phcs, and vice versa. Simulation of patterned saphire substrate led by fdtd. Yee, born 1934 is a numerical analysis technique used for modeling computational electrodynamics finding approximate solutions to the associated system of differential equations. The 90 degrees beam propagation tool, powered by meep, implements the finitedifference timedomain fdtd method for computation in electromagnetism.
Click below to register to view this event broadcast. How to install and use mits meep on a windows machine meep or meep is a free finitedifference timedomain fdtd simulation software package developed at mit to model electromagnetic systems. Free and open source software resources empossible. How can i be sure im considering the distorsin introduced by antennas. Lumericals device suite of componentlevel simulation products use multiphysicsstyle simulation workflows to model optical, electrical and thermal effects at the physical level. This paper describes meep, a popular free implementation of the finitedifference timedomain fdtd method for simulating electromagnetism. Large bandwidth mode order converter by differential waveguides b. Their advantages and problems have been evidenced, for example, comparing results obtained with the pwm and the fdtd in a 2d case for a single defect 1 or with fdtd 2d and fdtd 3d for a line waveguide 4. Bandwidth analyzer pack bap is designed to help you better understand your network, plan for various contingencies, and track down problems when they do occur. Apr 01, 2014 the lecture introduces the student to the basic concepts behind the finitedifference timedomain method. Finitedifference timedomain modeling of curved surfaces pdf. A finitedifference timedomain simulation fdtd is carried out to compare the radiation coupled into the metal stripline with the radiation emitted perpendicular to the sample surface, using a. Petersburg national research university of information technologies, mechanics and optics, 49 kronverskii ave. Advances in fdtd techniques and applications in photonics allen ta.
Meep itself, which defines all the interface features that are specific to fdtd calculations. Design of a compact mode and polarization converter in. Large bandwidth mode order converter by differential. You record your favorite tv shows, why not record your favorite talk radio shows so you can listen to them on your schedule, create podcasts, archive shows, and skip commercials. Jan 21, 2015 blog dedicated to fundamentals of optics, meep fdtd, python and raspberry pi. A mode and polarization converter is proposed and optimized for 3d photonic integrated circuits based on photonic crystals phcs. A solar cell based on a hot electron plasmon protection effect is proposed and made plausible by simulations, nonlocal modeling of the response, and quantum mechanical calculations. Each fdtd run took 5 minutes on intel core2 duo e6600 processor. With a slant of lambertian reflection and width b equal to the upconverter, concentration is achieved for angles. This extensively revised and expanded third edition of the artech house bestseller, computational electrodynamics.
Meep is a free and opensource software package for electromagnetics simulation via the finitedifference timedomain fdtd method spanning a broad range of applications. This paper describes meep, a popular free implementation of the. It is a short lecture only intended to give an intuitive understanding of the method. Hightemperature stability and selective thermal emission of polycrystalline tantalum photonic crystals veronika rinnerbauer,1, yi xiang yeng,1,2 walker r. Because fdtd is based on solving the maxwells equations directly 40, 42, it allows. Geometrical concentration for enhanced upconversion. Lumericals tools enable the design of photonic components, circuits, and systems. At the edge of the pml region is a metalic boundary condition. Meep was originally developed as part of graduate research at mit. Ffmpeg record, convert, and stream audio and video.
A flexible freesoftware package for electromagnetic simulations by the fdtd method this paper describes meep, a popular free implementation of the finitedifference time. Osa design of a compact mode and polarization converter. The finitedifference timedomain method, offers engineers the most uptodate and definitive resource on this critical method for solving maxwells equations. The nanofilm lab tool, powered by meep, simulates the interaction of electromagnetic plane wave and nanoscale metallic film with subwavelength slit. Wavelength independent multimode interference coupler. Photonic crystal based chip for detection of toxic gases in air ashwini n1, dr. It has been successfully applied to an extremely wide variety of problems, such as scattering from metal objects and. Please log in to access your course information using the format.
We are dedicated to meeting the individual needs of our students. Applied physics letters, 106, 041111, 2015 pdf with associated simulation script. Messages by thread meep discuss when using parallel mpb command, lattice sizex y z changed to y x z ismail kalay meep discuss existing enviroment in anaconda mccarty, bailey c. We employ a finite difference timedomain fdtd simulation implemented via meep. Photonic crystals engineering for light manipulation. In particular, we focus on aspects of implementing a fullfeatured fdtd package that go beyond standard textbook descriptions of the algorithm, or ways in which.
Lin, polarization converters based on axially symmetric. In order to convert the hdf5 output files of meep into images of the fields, this tutorial. This manual is primarily focused on documenting these features. The following is a walkthorugh guide to installing meep on a windows 8 machine. Knowledge exchange kx the kx is a user forum for users who want to ask questions and exchange simulation tips with the larger lumerical community. Html pdf web tool to convert web pages to pdf files. And a formula for the units of current is not terribly useful because usually the current source in an fdtd calculation is artifically inserted to create the field, and doesnt correspond to the.
The working of these devices was analyzed by the fdtd method and the operating frequency range was explored using the plane wave expansion method. We compare the analytic and simulated results at a. A flexible freesoftware package for electromagnetic simulations by the fdtd method this paper describes meep. Among them, the fdtd 3 finite difference time domain techniques and the plane wave method pwm are probably the most popular. We used meep mit electromagnetic equation propagation to investigate the feasibility of oqp by calculating the optical coupling loss between butt coupled waveguides. To convert the diffraction efficiency into transmittance in the x direction in order to be able to compare the scalartheory results with those from meep, the diffraction efficiency must be multiplied by the fresnel transmittance from air to glass and by the cosine of the diffraction angle. Interference based square lattice photonic crystal logic. In particular, we focus on aspects of implementing a fullfeatured fdtd package that go beyond standard textbook descriptions of the algorithm, or ways in which meep differs from typical fdtd implementations. In particular, we focus on aspects of implementing a fullfeatured fdtd package that go beyond std. Srinivas talabattula3 1,2the oxford college of engineering, vtu, bangalore, india 1ashu. Many concepts have been proposed to harvest or convert. Ezgifcom web based tool for converting video files to gif animations. Highq coupled resonances on a phc waveguide using a. However, special challenges arise when trying to design nanophotonic materials with precisely tailored optical properties that can operate at high.
Hightemperature stability and selective thermal emission. Timeresolved ultrafast photocurrents and terahertz. Statistical averaging needed to obtain results for incoherent led light emission requires 15 fdtd runs. Performance of fdtd method cpu implementations for simulation of electromagnetic processes dmitry l. The two dimensional photonic crystal was designed to guide the microwave energy in specific directions. The simulations and the experimental data showed this, although the effect was weak. Meep or meep which stands for mit electromagnetic equation propagation, is a free finitedifference timedomain fdtd simulation software package developed at mit to model electromagnetic systems. Meep implements the finitedifference timedomain fdtd method for computational electromagnetics. Advances in materials and innovations in device applications xii.
So, entire simulations for one device structure took around 75 minutes. Osa hightemperature stability and selective thermal. Excerpted from advances in fdtd computational electrodynamics. A flexible, freesoftware package for electromagnetic simulations by the fdtd method. Simulation of photosensitive devices with fdtd method. Meep is a free and opensource software package for electromagnetics simulation via the finitedifference timedomain fdtd method. Therefore it is called a timespacesynchronized fdtd algorithm tss fdtd, or in short, tss. Turhansayan2 1 nanophotonics research laboratory, department of electri cal and electronics engineering, tobb university of economics and technology, 06560 ankara, turkey 2 department of electrical and electronics engineering, middle east technical university, 06800. Chan,1,2 veronika rinnerbauer,4 veronika stelmakh,1,2 jay j. How to install and use mits meep on a windows machine blog. The selective emitters were fabricated as 2d photonic crystals phcs on polycrystalline tantalum ta, targeting largearea applications in solidstate heattoelectricity conversion. In particular, we focus on aspects of implementing a fullfeatured fdtd package that go beyond standard textbook descriptions of the algorithm, or ways in which meep di. Fdtd maxwellsolver this paper describes meep, a popular free implementation of the. Oct 02, 2014 meep fdtd is an amazing open source software to simulate electromagnetic systems.
Highperformance photonic simulation software lumerical. This is a widely used technique in which space is divided into a discrete grid and the fields are evolved in time using discrete time steps as the grid and the time steps are made finer and finer, this becomes a closer and closer approximation for the true continuous equations, and one can. To my surprise the new algorithm is better than the current fdtd in many major aspects, as explained below. Meep supports a wide range of electromagnetic design and modeling. A flexible, freesoftware package for electromagnetic. Take into account however, that such an installation is nothing like pressing nextnextnext. Since it is a timedomain method, fdtd solutions can cover a wide frequency range. Joannopoulos,1,2 marin soljacic,1,2 and ivan celanovic2 1research laboratory of electronics, massachusetts in stitute of technology, 77 massachusetts avenue, ma. It uses a nonstaggered grid to give simulation results in a time and space synchronized manner. I am searching for a free software or an online interactive virtual lab that can be used in terms of teaching a biological phenomenon to students in high school or precollege level. Additional examples are available for a waveguide mode converter and. Photonic crystal enhanced silicon cell based thermophotovoltaic systems yi xiang yeng,1,2. Lensing and waveguiding in birefringent doubletwist. The finite difference time domain modeling technique is used to model the near end and far end crosstalk on coupled microstrip.
Highq coupled resonances on a phc waveguide using a tapered nanofiber with high coupling efficiency. Simulation in 1d, 2d, 3d, and cylindrical coordinates. Im using meep and what i want to do is simulating two antennas, one tansmitting and the other receiving, and make a comparison between the transmitted and the received pulse. Interactive, handson sessions will introduce participants to setting up and launching electromagnetic simulations using the stateoftheart finitedifference timedomain fdtd software package meep, originally developed at mit. We propose a new configuration of interference based or, xor, not and and optical logic gates on a two dimensional square lattice photonic crystal phc platform. Opensource computational electromagnetics symposium. Pdf wavelength independent multimode interference coupler. Kim komando freeware for free downloads at winsite. Meep fdtd package from mit that supports parallel processing. It assumes minimal knowledge of linux and little technical skill. A finitedifference timedomain fdtd simulation software package to model electromagnetic systems. Problem in frequency dependent material permittivity in meep fdtd. We have designed, fabricated and characterized an integratednanophotonics polarization beamsplitter with a footprint of 2.
1640 883 594 1196 1620 193 1314 221 1624 733 2 543 1322 419 1344 610 1427 1555 1238 610 704 1455 391 355 489 1478 15 1618 16 793 449 149 1130 222 276 99 767 736 640 240 269 340 480 889 75 267 471