In this book, recent application of micro ring resonators reported. Design and modeling of waveguidecoupled singlemode microring resonators m. Modelling the silicon photonic device proposed is a twocomponent systemsee figures 1a and bin which a microring 7. Tunable large free spectral range microring resonators in lithium. An energyefficient silicon microring resonatorbased. Here we will using micro ring resonates as a setup of proposed system and we will generate required pulse using optical soliton and gaussian pulse as input pulse. A continuous wave cw incoming optical wave is modulated by varying the refractive index of the microring resonator.
A simple semiconductor laser diode and a monochromator were used for the characterization of the device. In the present paper the advantages of ring resonator based switch have been exploited to design an integrated alloptical circuit which can perform the logical operations left shift, right shift, circular left shift and. 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 waveguide resonators are useful components for wavelength. Different from fabryperot resonators, ring resonators use couplers instead of mirrors for optical feedback. The sensitivity measurement range is limited by the free spectral range fsr of the sensing mrr. It is a four port micro ring resonator with radius 5. Optical ring resonator software cad simulations for soi. Photonic crystal microring resonator for label free. An optical ring resonator usually consists of a straight waveguide coupled to a circular one, as shown in figure 1a, or two straight waveguides coupled through a circular one, as shown in figure 1b. Micro ring resonators have been fabricated in hydrogenated amorphous silicon on silica structure. Automated tuning and channel selection for cascaded micro.
Degtyarev and others published 3d simulation of silicon microring resonator with comsol find, read and cite all the research you need on researchgate. Broadband electrooptic frequency comb generation in a. Mar 28, 2014 a transparent broadband ultrasonic detector based on an optical micro ring resonator for photoacoustic microscopy skip to main content thank you for visiting. Highqualityfactor microring resonator in amorphous.
Numerical study of integrated micro ring resonator and. Our microring resonators achieve an fsr greater than 5 nm for ring radius of 30. Silicon microring modulator modeling yonsei university. New microring resonator creates quantum entanglement on a. Silicon photonic ring resonators are integrated optical filters with a transmission spectrum consisting of a comb of resonance peaks with a quasiperiodic wavelength spacing, or free spectral. In this paper we provide 3d fullvector static electromagnetic simulation of silicon micro ring resonator operating. Effect of doping position on the active silicononinsulator. Mathematical background the simplest configuration of a microring resonator consists of a unidirectional coupling between a waveguide and a ring resonator, as we can see in fig.
We demonstrate efficient, low power, continuouswave fourwave mixing in the cband, using a high index doped silica glass micro ring resonator having a qfactor of 1. Optical microring resonator for label free biosensing application. Silicononinsulator microring resonator for sensitive and labelfree biosensing. In this work, we use four cascaded micro rings implemented in a silicon photonic device operating in the cband. The ring has a qfactor of 65000, a free spectral range of 575ghz, a radius of 48m and a crosssection of 1. Fauchet1, 1department of electrical engineering and computer science, vanderbilt university, nashville, tn 37235, usa 2department of physics and astronomy, vanderbilt university, nashville, tn 37235, usa. In this paper, we propose and analyze a coupled ring resonator based modulator, in which only one ring resonator is. Simulated response of a mr for the through black and drop port grey. Figure 1 is a scheme of the ring resonator used in our experiment. Pdf microring resonators have been widely employed, in recent years, as wavelength filters, switches and frequency converters in optical. A transparent broadband ultrasonic detector based on an. The term ring resonator is typically used to indicate any looped resonator, but in the. Introduction and basic theory of integrated ring resonator and micro lens 1.
Osa design and fabrication of soi microring resonators. As a narrowband antenna, possibly operating at a higher mode where the bandwidth is wider and somewhat more useful 3. 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. Development of microring resonatorbased optical bandpass. The microstrip ring resonator has found three main uses. The input end of the straight waveguide is fed by a focused gaussian beam. Abstract optical micro ring resonator orr made of silicon on insulator sol using cmos manufacturing process is a promising candidate for level free biosensing application. Quality factor qfactor for a waveguide microring resonator download pdf. The experimental bulk detection sensitivity is 248nmriu and label free detection of dna and proteins is. Micro ring resonators have been widely employed, in recent years, as wavelength filters, switches and frequency converters in optical communication circuits, but can also be successfully used as transducing elements in optical sensing and biosensing. Silicon microring resonators photonics research group. Us20100260453a1 quality factor qfactor for a waveguide. The term ring resonator is typically used to indicate any looped resonator, but in the narrow sense it is a circular ring. Photonic crystal microring resonator for labelfree biosensing stanley m.
A micro ring or optical ring resonator is a device that essentially uses the same principles as those found in whispering galleries, except that. The microstrip ring resonator for characterising microwave. Design and modeling of waveguidecoupled singlemode. Labelfree biosensing by means of optical microring resonator.
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. We show that geometrical and scalar approaches are not sufficiently accurate for calculating resonator parameters. When a strong optical control pulse and a weak cw probe light are coupled into the ring resonator through two different resonances, the control pulse generates free carriers in the ring resonator due to the twophoton absorption tpa effect. Design of microring resonatorbased alloptical logic shifter. Mrr is the promising basic element of future optical integrated circuits due to its various applications. Pdf 3d simulation of silicon microring resonator with. This paper presents silicon ring resonator based photonic transmitter prototypes that address the limited intrinsic bandwidth of carrierinjection. Photonic crystal microring resonator for label free biosensing stanley m. Label free biosensing by means of optical micro ring resonator.
In this article we discuss on the principle and importance of level free biosensing. Vertical red line marks the frequency of the external driving equation 1 describes the propagation in time of the intracavity. Micro resonator cavitycoupling to a rectangular wg cavity 1the penetration depth h is tunable for impedance adjustment. The ring resonator is consisting of waveguides where one waveguide is a closed loop, and it will couple the light input and output. Pdf labelfree biosensing by means of optical microring. Numerical analysis of perforated microring resonator based. Coupled ring resonator structures composed of a sequence of micro resonators coupled to an optical waveguide have been reported 8, 9. We show cascaded silicon microring resonators with radii around 1. This study highlights the study of the free carrier injection effect on the active soi micro ring resonator. Comsol tutorial for dispersion engineering in micro ring resonators.
A pulse with ultrawide bandwidth that spans over several resonant modes of the ring and of the sensing object is used for simulation, enabling a singleshot simulation of the microring sensing. Pdf labelfree biosensing by means of optical microring resonator luca stefano academia. The single layer implementation, although requiring simpler process, presents a design tradeoff between the resonator parameters fsr, coupling, lossrev. A computersimulated ring resonator depicting continuous wave input at resonance. In this paper, the design of a micro ring resonator electrooptical modulator using a pn junction embedded in a rib waveguide is reported. Pdf micro ring resonators and applications researchgate. Alloptical logic based on silicon microring resonators. A reverse bias of 10v is applied to the junction and shows the possibility to achieve a high modulation depth. Pdf in this book, recent application of micro ring resonators reported. Optical characterization showed that the fabricated microring resonator had a free spectral range fsr of. Allpass ring resonators in its simplest form a ring resonator can be constructed by feeding one output of a directional coupler back into its input, the socalled allpass. Low power four wave mixing in an integrated, microring. An optical ring resonator is a set of waveguides in which at least one is a closed loop coupled.
Paulson school of engineering and applied sciences, harvard university, cambridge, massachusetts 028, usa 2department of physics, brown university, providence, rhode island 02912, usa 3department of. Two basic configurations of an optical micro ring resonator. These can be, but are not limited to being, waveguides. This lower loss gives rise to a higher q in the ring since the q of the ring is directly proportional to the round trip loss. The operation with a ceramic resonator can be considered as the same. The remaining light in the bus waveguide is then fed into a photodiode, which is used to monitor the tuning of all rings. Micro ring resonator figure 16 shows the simulated dropped signals from the terminal 2 of the constructed ring resonator for both te and tm polarizations.
Numerical analysis of perforated microring resonator based refractive index sensor m. 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. More than a 2fold improvement in volumetric and surface sensing sensitivity is achieved compared to conventional microring sensors. The concept was and still is used to build interacting elements smaller than the applied electromagnetic radiation. Design and simulation of a low loss soi optical microring. Osa photonic crystal microring resonator for labelfree. Device performances are predicted using numerical modeling software 2d.
In this work perforated microring resonator based refractive index sensor is presented. Nonlinear effects in soi microring resonators 197 ei1 et1 t ei2 et2 k k t. The intrinsic quality factor is estimated as 56,000 and the notch depth is 30db. The concepts behind optical ring resonators are the same as those. Monolithic ultrahighq lithium niobate microring resonator. In this paper we provide 3d fullvector static electromagnetic simulation of silicon microring resonator operating. Department of electrical and electronic engineering. Monolithic ultrahighq lithium niobate microring resonator mian zhang,1, cheng wang,1, rebecca cheng,1,2 amirhassan shamsansari,1,3 and marko loncar1, 1john a. Fauchet1, 1department of electrical engineering and computer science, vanderbilt university, nashville, tn. An alloptical logic shifter circuit with the help of gaasalgaas based microring resonator is proposed and described.
Design of a microring resonator electrooptical modulator. Silicon microring resonatorbased alloptical digitalto. 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. Optical filter that utilizes silicon micro ring resonator mrr has been proposed as a solution in order to provide highbandwidth, low power consumption and small size. A study on refractive index sensors based on optical micro. Microwave and rf applications for microresonator based. The combination of swg waveguides with optical microresonators can offer the. Pdf standard silicon photonic strip waveguides offer a high intrinsic refractive index.
Simulation and analysis of singlemode microring resonators in. Pdf 3d simulation of silicon microring resonator with comsol. This paper presents silicon ring resonatorbased photonic transmitter prototypes that address the limited intrinsic bandwidth of carrierinjection. Label free, singleobject sensing with a microring resonator is investigated numerically using the finite difference timedomain fdtd method. The device is fabricated with a widelyavailable sembased lithography system using a stitchfree. Numerical study of integrated micro ring resonator and micro. As a resonator with several well defined resonant frequencies for the purposes of measuring microstrip properties 2.
The main performance characteristics of these resonators are the free spectral range fsr, the. The dimensions of the ring wg and bus wg can vary based on symmetric or asymmetric coupling. A record high conversion efficiency for this kind of device is achieved over a bandwidth of 20nm. Micro ring resonator based optical filters for wdm. Fast analytical modelling of an soi microring resonator for. Passive ring resonator micro optical gyroscopes 439 gyro should be considerably smaller than the width of the transmission minimum. This content is presented at fem workshop organized by epfl in omt etn workshop series. A label free optical biosensor based on a onedimensional photonic crystal microring resonator with enhanced lightmatter interaction is demonstrated. Microring resonator theory a microring resonator is an optical component to con ne light bytotal internal re ectiontir, whichcan be createdby micro nano fabrication techniques. Characteristics such as large fsr, low loss and high coupling more than 3% are important for a micro ring resonator, regardless of the specific function it fulfills. May 30, 2011 simulation with awcm full grid method. All the study are based on numerical simulation method. Photonic crystal microring resonator for label free biosensing. Microring resonator made by ionexchange technique for.
Abstract layered 2d graphene oxide go films are integrated with micro. The bus waveguides, which have the same cross section as the ring, are buried underneath a sio2 layer and they are used to couple light inside and. The resonator modulator configuration is depicted in figure 2. When the shape is elongated with a straight section along one direction typically along the coupling section the term racetrack resonator is also used. Pdf labelfree biosensing by means of optical microring resonator. Labelfree biosensing by means of optical microring resonator article pdf available in proceedings of spie the international society for optical engineering 7356 may 2009 with 198 reads. Optical modulators with a highq microring are reported to yield outstandingly small power of modulation. Jan 28, 2015 a micro ring or optical ring resonator is a device that essentially uses the same principles as those found in whispering galleries, except that instead of sound, they use light. Pdf design and fabrication of soi microring resonators based on. Optical trapping and manipulating with a silica microring resonator. In the above resonator gyro configuration, one optical coupling loop one additional waveguide coupled to the reso. Microring resonator made by ionexchange technique for detecting the co 2, h 2 o.
The figure of merit of this compact depletion modulator is estimated to be lp. Figure 1 shows a ring resonator that was the basis of the integrated optical parametric oscillator. Optical microring resonators have extensive applications in wavelength filters, label free biosensors 2,3,4,5, pressure sensors 6,7,8, and acceleration sensors 9,10 due to their outstanding properties of micro size, the complementary metaloxidesemiconductor cmos compatibility and immunity to electromagnetic fields 11,12. Quite strong dependence of ring resonator radius on waveguide width is revealed.
Simulation of the optical ring coupler fimmprop, our optical propagation tool based on eigenmode expansion eme, can simulate the coupling regions of ring resonator filters very efficiently and with very good accuracy thanks to its taper algorithm, even for large ring diameters that cannot be solved. We demonstrate a junction between a silicon strip waveguide and an ultracompact silicon microring resonator that minimizes spurious light scattering and increases the critical dimensions of the geometry. Previously, these structures are used for slow light or nonlinear optics. Carlos errandoherranz, frank niklaus, gran stemme, and kristinn b. Labelfree biosensor arrays based on silicon ring resonators and high speed optical scanning instrumentation. The key issues affecting the resonator design such as free spectral range and quality factor were discussed. Alloptical 10 gbs and logic gate in a silicon microring resonator. In this work perforated microring resonator based refractive index sensor is.
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