Fast thermooptic switch using direct current flow through. The observed thermal lens modulation is applied to demonstrate normally on all optical switch which showed excellent modulation of output beam signal by pump beam. Pdf the described work is study and design of multimode interference based thermo optic switch using silicon on insulator soi technology. The measured average onchip insertion loss is 9 2 db and the. Pdf thermooptic waveguide digital optical switch using. The results show that the power consumption of the designed ybranch thermo optic switch is only 3. Xie uv ultraviolet uvnil ultraviolet nanoimprint lithography vcsel vertical cavity surface emitting laser wdm wavelength division multiplexing. The device fabricated using cmos technologies has a footprint of 2. First, the physical principles of the thermo optic effect are briefly introduced. The switching power is about 2 mw, which can be lowered to 2030 mw by improving the driving ef. A horn structure, with a half branch angle of 4 is used. Thermooptic refraction in mos2 medium for normally on all.
Silicon platform enables the monolithic realization of largescale photonic integrated systems. The characteristics and applications of an optical switch are described, which uses a thermo optic effect in a machzehnder interferometer type waveguide device. In the design, one heating electrode is used to alter the refractive index at a spot image which changes the phase of this image to realize the switching function. Feb 01, 2021 further, a thermo optic refraction based technique to measure thermal lens size is proposed. In this work, we propose a new structure layers for 2 a 2 thermo optic mzimmi switch in which only one heater electrode is used with a silicon ridge at substrate layer. Zehnder interferometer structure was demonstrated with silicon photoniccrystalslab linedefect. Dec 01, 2020 in contrast, the response time of mkrbased thermo optic switch has increased by an order of magnitude, mainly due to the small core of mkr and the excellent thermal coefficient and thermal conductivity of the mxene ti 2 ct x. The switching power is defined as the electrical power delivered to the heater electrode that induces a phase shift. A description of the most common technologies used for the fabrication of thermo optic switches is provided along with the values of thermo optic coefficient for a number of materials. A low power machzehnder interferometer thermo optic switch using freestanding silicononinsulator strip waveguides is demonstrated. Ultracompact and widespectrumrange thermooptic switch. Photonic crystal waveguides pcws were used to replace conventional channel waveguides in the phase shifters of a machzehnder interferometer mzi.
Design and analysis a thermooptic switch based on photonic crystal. This letter presents an optical switch using total internal reflection tir via thermo optic effect toe. The described work is study and design of multimode interference based thermo optic switch using silicon on insulator. Pdf printable thermooptic polymer switches utilizing.
By introducing a new physical mechanism of the optical tunneling effect into microelectromechanical systems mems technology, a switching contrast of more than 30 db with a response time of less than 3 s are obtained. Index terms thermo optic modulator, silicon photonics, mid infrared. An asic control circuit for thermal actuated large optical packet switch array jianchiun liou 1, and fangang tseng,2 3 proceedings of the world congress on engineering 2008 vol i wce 2008, july 2 4, 2008, london, u. Printable thermooptic polymer switches utilizing imprinting. The optical device described herein with these properties is useful for optical path protection, dynamic variable optical power distribution, and optical crossconnect switching. A lowpower consumption mzi thermal optical switch with a.
A thermo optic switch using total internal reflection waveguide was fabricated fo r optical true time delay. The highly confined optical modes of the strip waveguides enable miniature heated crosssections. The experimental results show grated optical switches such as directional coupler switch 1 that the 2 2 mmimzi polymer thermo optic switch has a low that is highly sensitive to dimension variation during fabrication switching power of less than 1. May 01, 2014 a ybranch thermo optic switch and a waveguideintegrated 2. We proposed a tir optical switch using the thermo optic effect of polymers and discussed its fabrication with polyimide materials in this article. Design and simulation of 2x2 mmi coupler and thermo optic switch using solgel derived organicinorganic hybrid material abstract a new design of multimode interference mmi thermo optic switch with improved crosstalk figure is demonstrated in this paper. Fiberbased alloptical modulation based on twodimensional. The thermo optic switch is measured with an optical extinction ratio of 20db, an onoff switching power of 18. A power consumption of mw and switching speeds of 2ms are obtained as well, which. Thermo optic switch trench abstract a novel thermo optic multimode interference mmi switch with air and silicon trenches was proposed, and the performance of the switch was simulated. The described work is study and design of multimode interference based thermo optic switch using silicon on insulator soi technology. Apr 01, 2014 as one kind of the most important optical switches, thermo optic to one has many advantages, including low optical crosstalk, low optical loss, simple fabrication process and low cost.
Design and simulation of 2x2 mmi coupler and thermooptic. Thermal lens region size increased with increase in pump power. The optic switch is one of the most indispensable devices used in optical network systems, particularly in future photonic network systems, where the development of compact, crossconnect, optic switches is urgently required. Shamsan mmimzi polymer thermo optic switch with a high refractive index contrast ieee journal of lightwave technology, vol. Switch power was reduced 20% for the switch with deep. In this work, a novel design of a photonic crystal ring resonator with superellipse shape based on a thermo optic switch is studied. Low loss and high extinction ratio strictly non blocking 16. Pdf a new structure of mmi polymer thermooptic switch with. Osa compact and low power thermooptic switch using folded.
The innovative design guarantees rugged and safe nonblocking fiber plus camera power switching without any moving parts. Three different tunable photonic devices has been demonstrated using thermo optical tuning. The waveguides are monomode nanowires fabricated by duvcontact lithography having losses of 2 dbcm. The lanbased remote control software simplifies work, shows switching and camera status, and.
We demonstrate a thermooptic switch at 2m waveband with tuning efficiency of 0. Oct 10, 2020 we design two tunable thermo optic switches on a silicononinsulator soi chip. This paper presents a thermo optic switch based on the optical tunneling effect of a double optical barriers system 1. The first loop experiment with cascaded transparent ofdm. Polymer thermo optic switching matrix for space routing in transparent optical frequency division multiplex ofdm networks more by norbert keil in this paper, the fabrication and characterization of polymeric thermo optic to single switching elements and 4 x 4switching matrices are described. Extremelylowpowerconsumption thermooptic switch with silicon. Experimental verification of digital thermooptic switches with. Introduction advances in communication technology and growth of internet traffic have continuously driven the rapid evolution of networks.
According to this reason, the crosstalk in all mzimmi switches based on thermo optic effect that have been done is unequal at two states. The optical switch is designed on the 2x2 mmi cross coupler architecture of optical switch based on the general interference mechanism. Osa optimization of thermooptic phaseshifter design. The material system, optical and thermal designs are discussed. Dos digital optical switch dsl digital subscriber line duv deep ultraviolet edfa erbium doped fiber amplifier eem eigenmode expansion method eim effective index method.
Thermooptic refraction in mos2 medium for normally on. An asic control circuit for thermal actuated large optical. Thermo optic waveguide digital optical switch using symmetrically coupled gratings. Thermooptic and elastooptic tuning of silicon nanowires. Synthesis, physical properties and simulation of thermo. We demonstrate a printable thermo optic to switch utilizing imprinting and inkjet printing techniques. This heat induced change in optical path length can be translated into a phase shift as. One possible application is automatic loop 1 or loop c testing of ocus or dsus on an optical line for changes in applied electrical power, whose tests can be conducted including. Subpicosecond alloptical switching in a hybrid vo2. Microheaterintegrated silicon coupled photonic crystal. Fabrication and characterization on an organicinorganic 2.
Application study of optical switch using thermooptic effect. Total internal reflection tir to switch 4, 5 and conventional phasetuned to switch are two commonly reported to devices. The other traditional switch structure has a metallic heater on top of the waveguide. Index terms optical switch, tuning wavelength, electrical control, actuated, modulation frequency. Osa integrated thermooptic switch for 2 m spectral band. Pdf mems optical tunneling structure for thermooptic switching. May 20, 2009 in this work a thermo optic switch with very low power consumption of less than 1 mw is presented. The main focus of this work is to analysis of thermo optical switches.
Pdf mems optical tunneling structure for thermooptic. Michelson interferometer mi thermo optical switches with deep etched trenches for heatisolation. Polymer is the most attractive material to fabricate thermo optic switches for its high thermo optic coecient. Thermooptic switch based on transmissiondip shifting in a double. Effects of device structure on thermooptic switch and design. The experimental results also show that the proposed thermo optic switch has high efficiency, compact structure, low. Many emerging applications facilitated by silicon photonics such as optical biosensing, optical neurostimulation, optical phased arrays, holographic displays, 3d cameras, optical machine learning, and optical quantum information processing systems require the integration of a large number of optical. Open buy once, receive and download all available ebook formats, including pdf, epub, and mobi for kindle. This device was fabricated on silicononinsulator soi platform. The switch consists of a machzehnderinterferometer whose arms are placed on freestanding sio 2membrane cantilevers. Synthesis, physical properties and simulation of thermooptic. Polyimidewaveguidebased thermal optical switch using total. The device is designed and simulated using beamprop 3d from rsoft and 3d bpm cad softwares. Effects of device structure on thermooptic switch and.
Bpm method, the result showed that the power consumption of the thermo. Pdf crosstalk improvement of a thermooptic polymer. The air gap provides thermal isolation between the waveguide interferometer arms and the underlying silicon substrate. The x junction is composed of two crossing polymeric channel wave guides. Dos digital optical switch dsl digital subscriber line duv deep ultraviolet edfa erbium doped fiber amplifier eem eigenmode expansion method.
Polyimidewaveguidebased thermal optical switch using. Osa optimization of thermooptic phaseshifter design and. Experimental result shows that the crosstalk in the bar state is as low as 42db and the total insertion loss is only 4db at the wavelength of 1. Apr 27, 2012 according to the atomic force microscopy analysis, the surface roughness of the fhbpi films is 0. Crosslinkable fluorinated hyperbranched polyimide for thermo. Pdf a new structure of mmi polymer thermooptic switch. This is a crucial measure parameter in the operation of a thermo optic optical switch. In this paper, the fabrication and characterization of polymeric thermo optic to single switching elements and 4 x 4switching matrices are described. One uses a waveguide embedded phase shifter based on direct heating due to electric current flow through waveguide. In this article, we introduce an optical switch with extremely low power. The 2 2 mmimzi polymer thermooptic switch in a high refractive index contrast 0. The lanbased remote control software simplifies work, shows switching and camera status, and enables broadcast production automation. Principles, materials, design, and device structure alloptical networking can be the sole. The measured on chip loss on the transmission band is as low as 1db.
Shamsan, fabrication and characterization of polymer thermo optic switch based on mmi coupler, optics communications 284 2011 11811185 more. Polymer based thermooptic switch for optical true time delay. Jan 01, 2020 this paper simulates the temperature field and stress field of thermal waveguide optic switch under the generalized thermoelasticity theory, six kinds of thermo optical switches with different cross section shapes, such as classic rectangle, air insulating groove, vacuum insulating groove, converse ridge, ridge and double ridge, were analyzed. The results will provide the foundation for many potential applications such as digital thermo. The measured onchip loss on the transmission band is as low as 1db. State of the art and perspectives on silicon photonic switches mdpi. Fabrication and characterization of cmos compatible. A common mzibased thermo optic switch configuration consists of a thin film heater deposited on a protective cladding material covering one of the interferometer arms, as illustrated in fig. Abstracta thermooptic switch with a symmetric mach. The fabrication was done using standard fabrication techniques such.
Osa submilliwatt thermooptic switches using freestanding. Dec 01, 2020 thermal field analysis of polymersilica hybrid waveguide thermo optic switch opt. Thus, a tir optical switch may be formed if a heater is set at the crossing poi nt of a symmetric x junction as shown in fig. Adding an layer of optical switches between spine and leaf greatly expand the scale of network number of servers can be space switch or wavelength switch wavelength routing also investigated by many other groups columbia, ucd, nagoya u, ntt, a. Osa compact and low power thermooptic switch using.
1192 725 323 567 739 1234 575 492 1178 1044 763 1587 355 86 306 258 248 1359 1503 1476 939 1414 1050 1580