The ofrr is a glass capillary with an outer diameter of approximately. Fimmprop was used to model the coupling region and the. Simulation of optical ring resonator based on lithium. Nov 15, 2017 temperature sensor based on optical ring resonator has been demonstrated with its constituent material as silicon sifiber and germanium gefiber in this work. Us7630603b2 optical waveguide ring resonator with photo. Analysis of optical ring resonator adddrop filters. The sensor in the ring resonator is based on the refractive index change.
Design and fabrication of racetrack optical ring resonator yuichiro tanushi coe researcher, masaru wake graduate school of advanced sciences of matter, m2, shin yokoyama professor research center for nanodevices and systems, graduate school of advanced sciences of matter 1. An actively controlled silicon ring resonator with a fully. Contactless ultrasound detection using an optical ring. Optical ring resonator fdtd animation waveguide youtube. Due to the high refractive index contrast, available in, for instance, silicon photonics, very small circuits can be made. Osa the sensing characteristics of plasmonic waveguide with. On may 1, 2000 conducting wires were placed symmetrically within each cell of a periodic split ring resonator array which achieved negative propagation of electromagnetic waves in the microwave region. In this paper, an overview of the optical ring resonators operation principle, fabrication and applications is. Coupled splitringresonator metamaterials have previously been shown to exhibit large coupling effects, which are a prerequisite for obtaining large effective. An optical ring resonator made in silicon on insulator waveguides soi was entirely simulated with the photon design mode solver fimmwave and its 3d propagation tool fimmprop.
Optical resonator it is easiest to consider the resonator as an enclosed box with highly reflective walls. Pdf analysis of optical ring resonator researchgate. Optical ring resonator software cad simulations for soi. Rp photonics also offers competent resonator design services, leading to stateofthe art designs. Figure 1 shows a fabryperot optical resonator created by aligning two highly reflective mirrors at separation d measured along the cavity axis. This model calculates the spectral properties of an optical ring resonator. A surface plasmon polaritons spps refractive index sensor which consists of two metalinsulatormetal mim waveguides coupled to each other by a ring resonator is proposed. A windowed cosine excitation is pumped in the bottom dielectric straight waveguide and as. A transparent broadband ultrasonic detector based on an. These can be, but are not limited to being, waveguides. Optical ring resonator based temperature sensor springerlink.
Ring resonators play an important role in the success of silicon photonics, because silicon enables ring resonators of an unprecedented small size. A generic ring resonator consists of an optical waveguide which is looped back on itself, such that a resonance occurs when the optical path length of the resonator is exactly a whole number of. Optical ring resonators are promising building blocks for photonic integrated circuits. We develop an aircouple ultrasound detector based on an optical fluidic ring resonator ofrr suspended on a ushaped holder. Tsigaridas1 department of physics, school of applied mathematical and physical sciences, national technical university of athens, zografou campus, gr15780 zografou, athens, greece abstract in this work the behavior of optical micro ring resonators. Taghinejad omran, all optical photonic crystal not and or logic gates using nonlinear kerr effect and ring resonators, optical and quantum electronics 47 2015 36893703. In the designed structure, the phase shift in the transmission spectrum is observed for the biosensing application. Optical ring resonator 3d simulation with fimmwave and fimmprop software. Twisted splitringresonator photonic metamaterial with. Finite difference time domain and finite element time domain are ideal tools to model optical ring resonator filters and optical disk resonator filters of relatively small dimensions. The laser wavelengths are much shorter than this box can realistically be. This scheme guarantees effective coupling between the waveguide and resonator and low loss light transmittance through the longrange waveguide.
The software rp resonator is a particularly flexible tool for analyzing and optimizing laser resonators. An optical ring resonator is positioned between two optical waveguides to provide an ideal basic structure for a ring resonator based adf. Their purpose is to produce the desired magnetic susceptibility magnetic response in various types of metamaterials up to 200 terahertz. Design and fabrication of racetrack optical ring resonator. By introducing magneto optical garnets with high faraday rotation and low optical loss in a ring resonator, a nonreciprocal phase shift is generated to split the resonance wavelengths of clockwise and counterclockwise modes under magnetic field. Three wavelengths of light are used between the ont and the olt optical line terminal. This process is experimental and the keywords may be updated as the learning algorithm improves.
Resonance asymmetry phenomenon in waveguidetype optical ring. After propagation around the ring waveguide, some light couples back to the straight waveguide and interferes with the incident light. Optical notch filter can be used to filter out the specific wavelengths and it is mainly used in optical signal processing and optical biosensors. Optical ring resonator notch filter comsol multiphysics. An optical resonator, a photonic system and a method of optical resonance employ optical waveguide segments connected together with total internal reflection tir mirrors to form a closed loop. Photonic crystal ring resonatorbased add drop filters. Rp photonics encyclopedia laser resonators, laser cavities. A computersimulated ring resonator depicting continuous wave input at resonance. Optical resonator an overview sciencedirect topics.
Pdf analysis of optical ring resonator adddrop filters. Twisted splitringresonator photonic metamaterial with huge. The notch bandwidth of the optical ring resonator based notch filter is 3. The concepts behind optical ring resonators are the same as those behind whispering galleries except that they use light and obey the properties behind constructive interference and total internal. The concept was and still is used to build interacting elements smaller than the applied electromagnetic radiation. The optical transfer function for through port of silicononinsulator panda ring resonator is derived by using graphical approach with a signal flow graph sfg in the zdomain. The ont converts fiberoptic light signals to copperelectric signals.
Modes of the cavity possess a standingwave structure along the axis, so the cavity supports a set of longitudinal modes separated in frequency by a free spectral range fsr of c2d where c is the speed of light. In this structure, a bus waveguide can couple to the ring resonator at its resonant frequency to trap the electromagnetic energy that is propagating in the waveguide and. Apr 26, 2019 two rings are considered as sensing ring for various parameter analyses with one of the ring as reference ring. For a proof of concept, a longperiod grating was inserted in the resonant cavity operating as a curvature sensing device. The device consists of a ring resonator and two integrated tunable re. Here we demonstrate the propagation phenomena in a double optical ring resonator structure. Circular optical microresonators contents ring resonator theory for the sake of further understanding, consider the typical abstract setting of a horizontally coupled circular microresonator as sketched in figure 1. High finesse devices have a small fwhm and a strong intensity buildup in the ring when in resonance. Sep 30, 2019 the proposed technique demonstrates a fiber ring resonator interrogated by an optical time domain reflectometer otdr, for intensity sensing.
Vertically coupled plasmonic racetrack ring resonator for. The group indices of both the materials vary with the change in temperature due to the thermooptic effect in materials. This book fills the need for a cohesive and comprehensive treatment of the subject, given its importance and the proliferation of new research in the field. Ring resonator based optical adddrop multiplexer oadms and filters are shown to be good candidates to.
The concepts behind optical ring resonators are the same as those. Us8396337b2 ring resonator based optical isolator and. A transparent broadband ultrasonic detector based on an optical microring resonator for photoacoustic microscopy. The sensing characteristics of such structure are systematically analyzed by investigating the transmission spectrum. Optical ring resonator filter model 2d and 3d fdtd and fetd simulations with omnisim software.
A split ring resonator srr is an artificially produced structure common to metamaterials. A lowpower all optical decoder based on photonic crystal. Therefore high f devices are suitable for applications were high intensities in the cavity are. The transmission properties are numerically simulated by finite element method. A study on refractive index sensors based on optical micro ring resonators georgios n. For example, it can be used to calculate and minimize the alignment sensitivity of laser resonators. At resonance, completely destructive interference can be obtained, with no transmitted light. We have investigated the nonlinear switching characteristics of an optical device using a double. Here, we propose a novel plasmonic refractive index sensor based on a metal strip waveguide placed under a waveguidebased racetrack ring resonator made of the same metal. Several attempts have been made in the past to develop micro ring resonator based on soi 3, lithium niobate 4, 5, etc. To further analyze and better design the resonator micro optic gyro rmog with a waveguidetype ring resonator, indepth research of the characteristics of the resonance asymmetry is fully developed for the first time, to the best of our knowledge. By using this methodology, a cavity round trip time of 2. Transfer function input port ring resonator free spectral range output waveguide these keywords were added by machine and not by the authors.
Coupled split ring resonator metamaterials have previously been shown to exhibit large coupling effects, which are a prerequisite for obtaining large effective. Research target signal delay in metal interconnection becomes. Linear and nonlinear behaviors of light in a silicon ring. The concepts behind optical ring resonators are the same as those behind. The field of microring resonator research has seen tremendous growth over the past decade, with microring resonators now becoming a ubiquitous element in integrated photonics technology. This makes the optical ring resonator an ideal notch filter, blocking the light at the resonant wavelength. Ring resonator as the optibpm layout the solution for the fourth example is more info. In this paper all optical micro ring resonator based on lithium niobate on insulator lnoi has been proposed as shown in figure 1. We obtain an analytical expression for pulse propagation through a semiinfinite crow in the case of weak coupling. The dispersion relation agrees with that derived using the tightbinding model in the limit of weak inter resonator coupling. Before having the fdtd component and any simple possibility to use a multidirectional optical component based on a modified sdata approach, we have to analyze some structures suitable for the fdtd like the ring resonator by the means already available.
The optical resonator includes the optical waveguide segments, the tir mirrors and a phototunneling inputoutput io port. Optical ring resonator based notch filter using lithium. A study on refractive index sensors based on optical micro. An optical ring resonator is a set of waveguides in which at least one is a closed loop coupled to some sort of light input and output. Optical ring resonator filter model fdtd simulation with.
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