Electrooptic modulator simple english wikipedia, the. Electrooptic modulator eom is an optical device in which a signalcontrolled element displaying electrooptic effect is used to modulate a beam of light. Electro optical modulator system configuration options. Amplitude modulators basically consist of an electrooptic modulator followed by a polarizer. We also offer liquid crystal eo modulators for speeds up to 2. The jenoptik integrated optical phase modulator is a fibercoupled electrooptical light modulator.
Fibercoupled intensity, phase, or iq modulators for speeds up to 40 ghz can be driven by our eo modulator drivers. Electro optic modulator eom is an optical device in which a signalcontrolled element exhibiting the electro optic effect is used to modulate a beam of light. The discussion presented in this chapter applies to any electrooptic material, any direction of the applied voltage, and any direction of the wave vector. Electro optic modulators can be purchased in fibercoupled form, with different types of connectors and fibers e. Miguel hernandez, 03202 elche, spain corresponding author. The corresponding transfer chart is depicted by black curve in fig. Pdf we propose an electricaloptical converter using electricfieldcoupled metamaterial antennas on an electrooptic eo modulator for wireless. Pockels cell is such device which can produce controllable birefringence by applying. Description the 10 gbitss electrooptic modulator is designed for longwavelength, singlemode external amplitude modulation applications. Novel electrooptic modulator system for the production of. The purpose of electrooptic amplitude and phase modulators is to allow for the electrical control of the amplitude, phase, and polarization state of an optical beam. Note that a proper mechanical mount is also required, often with means to align the modulator precisely in various directions. Electro optic modulator based on photolithography fabricated pin integrated photonic crystal nanocavity article in ieice transactions on electronics e100.
In this paper, we analyze the performance of an electrooptic modulator based on a single quantum dot strongly coupled to a nano resonator, where. Comparison of electro optic materials apart from presence of electro optic effect, other important material properties include optical loss, maximum optical power handling capability and stability thermal and optical. Theory of electrooptic modulation via a quantum dot coupled. The cell contains uniaxial crystal, which becomes biaxial when electric field is applied. However, compared with the size of onchip electronic components it is still bulky. However, for this device the waveguide axis is rotated in the xz plane by 45 relative to the crystal axis, so a vertical parallel to y electrostatic field affects the te mode by an electrooptic coefficient equal to r41. On the other hand, there are fiber coupled modulators, often realized as a waveguide modulator with fiber pigtails, which can easily be integrated into fiber optic systems. The system operates in strong coupling regime when g. Indiumtinoxide for highperformance electrooptic modulation. Onchip optical interconnects require eo modulation at the nanoscale. Modulators can be made from inorganic materials, semiconductors or polymers 11 polymer modulator fabricated using su8 based. All electro optic modulators listed in this data sheet are of the transverse field type, that is, the electric field produced by the applied signal voltage is perpendicular to the optical propagation direction.
An optical modulator is a device which is used to modulate a beam of light. Integrated lithium niobate electrooptic modulators. A highspeed electrooptic triplemicroring resonator modulator. The jenoptik integrated optical amplitude modulator is a fibercoupled electrooptical light modulator. Electro optic modulators with promising electro optic efficiencies have been demonstrated 2527,29. Jun 22, 2012 electrooptic modulator eom definition an optical device in which a signalcontrolled element displaying electro optic effect is used to modulate a beam of light. This means that the material changes its optical properties when there is an electric field. Thorlabs offers a selection of fibercoupled electrooptic eo modulators, which are ideal for modulating light from fibercoupled laser sources.
An electro optic modulator eom is an optical device in which a signalcontrolled element exhibiting an electro optic effect is used to modulate a beam of light. The beam may be carried over free space, or propagated through an optical waveguide optical fibre. Introduction over the last several years, the demand for high bandwidth. Pdf electrooptic modulation eom is an essentially important optical manipulation for onchip photonics, optical communication and optical. Electrooptic amplifier for amplification of signals up to 150mhz with a 20db gain.
We propose a novel magnetooptical approach for the repetition frequency stabilization of optical frequency combs. Rp photonics encyclopedia optical modulators, acoustooptic. Applications frequently require eo modulators to be driven at. An acousto optic modulator aom, also called a bragg cell, uses the acousto optic effect to diffract and shift the frequency of light using sound waves usually at radiofrequency. Recent advances of wide band magnetooptical modulators in. The acousto optic modulator the acousto optic modulator is based on the elasto optic effect, in which a material strain causes a change in the refraction index of the material. Applications frequently require eo modulators to be driven at rates of 1 ghz or higher, which places significant demands on the driving radio frequency rf voltage source. Freespace amplitude, phase, or resonant modulators can operate at speeds up to 100 mhz. Highq microphotonic electrooptic modulator sites at usc. The acoustooptic modulator can therefore be used to deflect beams of polychromatic light into co mponent colors or wavelengths, in a manner reminiscent of the dispersive prism. A microphotonic mmwave modulator using simultaneous rf and optical resonance in an electrooptic medium is presented. The jenoptik integrated optical phase modulator is a fibercoupled electro optical light modulator. These external types of modulators do not cause any degrading effects on the laser linewidth and stability, unlike direct modulation techniques. While the origins of ram are not fully understood, measurements have revealed that it depends on the beam properties of the laser as well as the properties of the medium.
Pdf integrated electrooptics modulator researchgate. It uses an integrated machzehnder configuration to convert single polarization. Thorlabs selection of electro optic eo modulators includes freespace and fibercoupled linbo3 modulators. For successful operation of the electro optic modulator, the applied electric.
Thin linbo3 on insulator electrooptic modulator osa. This modulator does not induce mechanical resonances and as such has the. Jan, 2014 this video demonstrates how to transfer data between lumericals electrical and optical solvers. Theory of electrooptic modulation via a quantum dot coupled to a. The laser, when coupled with a wideband modulation system, has many applications in data recording. The purpose of electro optic amplitude and phase modulators is to allow for the electrical control of the amplitude, phase, and polarization state of an optical beam. Maldonado department of electrical engineering the uni y ersity of texas at arlington arlington, texas 1 3. Osa magnetooptic modulator for high bandwidth cavity. A highspeed electrooptic triplemicroring resonator. Recent advances of wide band magnetooptical modulators. Electro optic modulators operation of electro optic modulators is based on the principle of induced birefringence.
It is made of a material that has a socalled electrooptical effect. Rp photonics encyclopedia electrooptic modulators, eom. It uses the machzehnder interferometer principle in waveguides, enabling you to transmit signals with. Disk recordersvideodisk mastering has been entirely dominated by electro optic systems. Fully integrated lithium niobate electrooptic modulator based on. Qubig offers a high frequency electro optic modulator that has a custom resonance frequency f0 from 100mhz to gbitss lithium niobate electrooptic modulator may 2001 2 agere systems inc. This means that the material changes its optical properties when there is an electric. Pockels cell is such device which can produce controllable birefringence by applying voltage to the cell. Residual amplitude modulation ram mechanisms in electro optic phase modulators are detrimental in applications that require high purity phase modulation of the incident laser beam. However, the actual switching voltages, bandwidths and optical losses in these demonstrations still suffer from critical tradeoffs, limited by. Thorlabs offers a selection of fibercoupled electro optic eo modulators, which are ideal for modulating light from fibercoupled laser sources. Cmoscompatible optical modulators are key components for future siliconbased photonic transceivers.
Electrooptic modulators operation of electrooptic modulators is based on the principle of induced birefringence. Description the 10 gbitss electrooptic modulator is designed for longwavelength, singlemode external amplitude mod. Single nanoparticle plasmonic electrooptic modulator based on mos 2 monolayers bowen li, shuai zu, jiadong zhou, qiao jiang, bowen du, hangyong shan, yang luo, zheng liu, xing zhu, and zheyu fang, school of physics, state key lab for mesoscopic physics, academy for advanced interdisciplinary studies, peking university, beijing 100871, china. One example is then when there is no electricity, light can pass through, and when there is, it cannot, and is reflected. Version download1670 stock0 total files1 file size461. A novel electrooptic modulator system for the production of dynamic images from gigapixel computer generated holograms. A 1v peak to peak input will produce a 10v output signal which can be used to drive the photonics technologies. Magneto optic modulation, faraday rotation effect, linbo 3, yig, ultra fast magnetic field. Micrometrescale silicon electrooptic modulator nature. Indiumtinoxide for highperformance electrooptic modulation in. Tapered transitions are developed to minimize coupling insertion loss.
With jenoptik integrated optical phase modulators, you can influence the phase of light in particularly high modulation frequencies up to the gigahertz range. Electro optic modulators can deliver this performance without compromising overall beam geometry. Reliability of optical fiber modulators for space flight. Waveguidebased electrooptical light modulator jenoptik. Depending on the parameter of a light beam which is manipulated, modulators may be categorized into amplitude modulators, phase modulators, polarization modulators etc.
Functioning as a high speed electrically variable wave plate, the modulators are able to change the sop of linearly polarized laser light to an orthogonal linear. Osa intensity dependent residual amplitude modulation in. Finally, basic bulk electrooptic modulators are described in the fourth section, modulator devices including some design considerations and performance criteria. The modulation may be imposed on the phase, frequency, amplitude, or polarization of the beam. The simplest type of electrooptic modulator is a phase modulator containing only a pockels cell, where an electric field applied to the crystal via electrodes changes the phase delay of a laser beam sent. The microring modulator is schematically shown in fig. Single nanoparticle plasmonic electrooptic modulator.
Practical uses and applications of electrooptic modulators. An acoustooptic modulator aom, also called a bragg cell, uses the acoustooptic effect to diffract and shift the frequency of light using sound waves usually at radiofrequency. When the strain is generated by an acoustic compression or rarefaction, an aom is formed. Experiments conducted in our laboratory using the hva200 high voltage amplifier, which has an output voltage range of 200 v, and the eoamnrc1 electrooptic amplitude modulator demonstrate and document this approach.
Theory of electrooptic modulation via a quantum dot. Telecommunication devices such as electro optic modulators must feature low insertion loss the reduction of signal power resulting from insertion of the device into the transmission line while providing a large change in phase. Because the acoustic signal is sinusoidal, a moving. Both vertical and horizontal integration of polymeric electrooptic modulator circuitry with. Comparison of electrooptic materials apart from presence of electrooptic effect, other important material properties include optical loss, maximum optical power handling capability and stability. An asymmetric machzehnder electrooptic modulator is fabricated through etching in 500nm thin film of ycut lithium niobate. It is a dedicated modulator that was designed to be used in stimulated raman scattering srs and other applications that require an amplitude modulated signal. Residual amplitude modulation ram mechanisms in electrooptic phase modulators are detrimental in applications that require high purity phase modulation of the incident laser beam. Systems and applications eo modulators demands for widerband beam modulation challenge system designers by robert f.
The integrated optical amplitude modulator amxxx is a compact fibercoupled waveguidebased electrooptical modulator that works based on mgo. This chapter begins the discussion of opticalsignal modulation and switching in many cases, the same device can function as either a modulator or a switch. On the other hand, there are fiber coupled modulators, often. Quantum modelling of electrooptic modulators jose capmany1, and carlos r. Frequency response of modulator as signal is applied to electrodes. A wideband yig modulator has recently been developed which represents a great improvement over other magneto optic modulators.
Electrooptic modulator selection guide standard phase modulators modulator series. The current modulation in the proposed structure arises from spin precession due to the spin. Pdf electricaloptical converter using electricfieldcoupled. With jenoptik integrated optical phase modulators, you can. Apes external electro optic modulator eom is an accessory for laser sources based on apes long standing experience in designing optoelectronics. It is made of a material that has a socalled electro optical effect. Pdf recent advances in polymer electrooptic modulators. The electrooptic tensor for gaas has nonzero components r41 r52 r63 in the crystal coordinate system. Experimental results demonstrating modulation with a v. Rings 1 and 2 have the same geometry, and work as a dual. All electrooptic modulators listed in this data sheet are of the transverse field type, that is, the electric field produced by the applied signal voltage is perpendicular to the optical. Electrooptic modulator simple english wikipedia, the free. An electrooptic modulator eom is an optical device in which a signalcontrolled element exhibiting an electrooptic effect is used to modulate a beam of light. They are used in lasers for qswitching, telecommunications for signal modulation, and in spectroscopy for frequency control.762 1144 1468 354 585 1319 1408 571 137 787 129 490 1241 579 841 763 189 1461 1535 1380 1255 216 457 1126 1187 230 1144 289 1162 401 710 1276 1423 805