Mzm, machzehnder modulator, intensity modulation, mzm drift. Optical frequency comb generation based on chirping of. Aug 17, 2015 performance of different mach zehnder interferometer mzi structures on optical modulator duration. Integrated machzehnder interferometerbased modulators for. Premade functions for microrings, bragg gratings, multimode interferometer, contra directional. I used dual drive mach zehnder modulator component to make a constant magnitude for all comb lines. Machzehnder interferometers are used in electrooptic modulators, electronic devices used in various fiberoptic communication applications. Gmskmodulatorname,value creates a gmsk modulator object, h. Apr 08, 2014 the mach zehnder modulator is a type of optical modulator used for communication applications. This example shows the oqpsk modulator baseband block configured for multirate processing using integer or bit for the input type. Voltagecontrolled integrated laser mach zehnder modulator.
Optisystem graphical user interface main parts of the gui the optisystem gui contains the following main more info. If a voltage is applied across one of the arms, a phase shift is induced for the wave passing through that arm. The analysis is carried out by simulating the proposed device with matlab and. It is used for spectrally efficient multisymbol transmission based on differential quadrature phase shift keying dqpsk modulation. Traveling wave machzehnder modulator lumerical support.
Note that some features will still not work under matlab, especially the graphic export to a file. A laser linewidth measurement method which uses a machzehnder electrooptic modulator mzm is proposed in a losscompensated recirculating delayed selfheterodyne interferometer lcrdshi. A machzehnder modulator is used for controlling the amplitude of an optical wave. This example describes a complete multiphysics electrical, optical, rf simulation of a travelling wave mach zehnder modulator, ending with a compact model circuit simulation in interconnect. How would one model machzehnder modulator in simulink. A recirculating delayed selfheterodyne method using a mach. This object modulates the input signal using the continuous phase modulation cpm method. Matlab simulink has become the universal mathematical and modeling tools in most universities and research laboratories around the world. The relative phase change is imposed by an electrically controlled index of refraction.
Simulating mach zender modulator by optisystem haidarmuh. Modulation of 87 gbaud was demonstrated with a dualparallel machzehnder modulator. Name of modulator, specified as the commaseparated pair consisting of name and a character vector. Influence of the modulation index of machzehnder modulator. Such a modulator is called machzehnder intensity electrooptic modulator or simply machzehnder modulator mzm. Eigenmode calculation of a rib waveguide view demo. Use the modulator object to create a modulator element. Complex phase biasing of silicon machzehnder interferometer. Keil, and thorkild franck, high speed silicon mach zehnder modulator, opt. We present a multifunction electronicphotonic integrated circuit epic design which exploits a new operation mode of a machzehnder modulator mzm.
Javier romerovivas, aidan meehan and lukasz krzczanowicz optical communications research group, dept. Communications toolbox provides tools for modulating and demodulating digital baseband signals using either matlab or simulink. Siliconorganic hybrid soh machzehnder modulators for 100. Hidemi tsuchidalimitation and improvement in the performance of recirculating delayed selfheterodyne method for highresolution laser lineshape measurement. I need to generate two carrier frequency by driving the machzehnder modulator at optical carrier suppression modulation point. Integrated machzehnder interferometerbased modulators. Modeling of machzehnder and electroabsorption modulator pulse generators and extraction of the chirp factor michael j. You will become familiar with the component library, the main layout, component parameters, and visualizers. Practical challenges for implementing this method with a silicon mach zehnder modulator are discussed, but the analysis is general to other material platforms. For example, y stepobj,x and y objx perform equivalent operations.
Beam propagation in a mach zehnder modulator view demo. Optical simulation of a machzehnder modulator beamlab. This lesson describes how to create a transmitter using an external modulated laser. The modulator controls the amplitude of an optical wave as it passes through the device. Machzehnder modulator modulated radiooverfiber transmission system using. Electronic and computer engineering, university of limerick, limerick, ireland. Modulator basics mach zehnder interferometer modulator vt electrode a b in c out d b linbo 3 eo substrate a waveguide. Modeling of mach zehnder and electroabsorption modulator pulse generators and extraction of the chirp factor michael j. This paper thus describes the modeling techniques for advanced photonic transmission systems and simulink is proven to be very effective platform for development of photonic communications systems due its. The pin mz creates a change in refractive index by injecting charge into a quasiintrinsic lightly doped region in the waveguide. The discussion presented in this chapter applies to any electrooptic material, any direction of the applied voltage, and any direction of the wave vector. You can use this element in the rfbudget object and the circuit object.
Machzehnder michelson sagnac interferometer fabryperot interferometer interferometers is an optical instrument that splits a wave into two waves using a beam splitter and delays them by unequal distances, redirect them using mirrors, recombine them using another beam splitter and detect the intensity of their superposition. Modulator basics machzehnder interferometer modulator vt electrode a b in c out d b linbo 3 eo substrate a. Application backgroundmatlab chinese forum summary about the matlab neural network 43 case analysis of 43 cases in the latest edition of the book source code. This object modulates the input signal using the gaussian minimum shift keying gmsk modulation method. Access to the travelled distance physical or optical of any waveguide offering a quick way to measure your devices. Matlab simulation of mzi due to the variation of the control signal x.
All names must be valid matlab variable names example. In contrast to the wellknown michelson interferometer, each of the wellseparated light paths is traversed only once if it is decided to produce fringes in white light, then, since white light has a limited coherence length, on the order of micrometers, great care must be taken to simultaneously. Multirate processing with oqpsk modulator block matlab. I want to know about mach zehnder modulator and machzehnder interferometer and what is the basic. The machzehnder modulator is a type of optical modulator used for communication applications. Voltagecontrolled integrated laser machzehnder modulator. Starting in r2016b, instead of using the step method to perform the operation defined by the system object, you can call the object with arguments, as if it were a function. The machzehnder modulator mzm is a versatile external modulator which makes it attractive for radioonfiber systems. How to simulate dual drive mach zehnder modulator in matlab. The setup includes two cascaded machzehnder modulators mzms, a sinusoidal wave oscillator, and an electrical time delay.
Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. Vpiphotonics integrated laser machzehnder modulator. Modeling of machzehnder and electroabsorption modulator. Apr 29, 2019 implementation of machzehnder modulation otdm system written by karthik s, d dhanush, harish s v published on 20190429 download full article with reference data and citations. Key results such as relative phase shift, optical transmission, transmission line bandwidth, and eye diagram are calculated. External modulators and mathematical modeling ofmach zehnder. Beam propagation in a machzehnder modulator view demo. This object has each specified property set to the specified value. The input waveguide is split up into two waveguide interferometer arms. Jun 30, 2010 frequency response of each machzehnder interferometer is also very important to achieve highspeed signals. Beamlab is an awardwinning set of simulation tools for beam propagation through optical devices and waveguides in your familiar matlab environment no hassle with learning a new proprietary language or cad tools, and utmost flexibility in postprocessing and editing of any output data and graphs. I am trying to make a simulation model for receiver shot and thermal noise and monitering it. A mach zehnder modulator is used for controlling the amplitude of an optical wave. We can enhance the bandwidth of the response by using thin substrate.
Machzehnder modulators are incorporated in monolithic integrated circuits and offer wellbehaved, highbandwidth electrooptic amplitude and phase responses over a multiplegigahertz frequency range. In multirate processing mode, the input and output signals have different port sample times. Implementation of machzehnder modulation otdm system. Maldonado department of electrical engineering the uni y ersity of texas at arlington arlington, texas 1 3. A new approach for the generation of an optical frequency comb, based on chirping of modulators, is proposed and numerically demonstrated. It is an ideal platform for modeling optical systems and photonic integrated circuits that operate with coupling and feedback of different optical and electrical signal paths. External modulators and mathematical modeling ofmach. Interferometers are widely used in science and industry for the measurement of small displacements, refractive ind.
Performance of different mach zehnder interferometer mzi structures on optical modulator duration. According to comsol, a multiphisics simulation software company, a mach zehnder modulator modulates the input signal by splitting it into two parallel branches, affecting the relative phase on one or both of the parallel branches, and recombining each branch at the output. Audiodecimationfactor decimation factor of the audio modulator filter. I need to generate two carrier frequency by driving the mach zehnder modulator at optical carrier suppression modulation point. Implementation of machzehnder modulation otdm system written by karthik s, d dhanush, harish s v published on 20190429 download full article with reference data and citations. Gmskmodulator creates a modulator system object, h.
Its versatility comes from the fact that the two electrical inputs can be controlled independently to generate a number of different optical. Onchip modulation for rotating sensing of gyroscope based. A recirculating delayed selfheterodyne method using a machzehnder modulator for khzlinewidth measurement. Such unprecedented bandwidth performance in silicon is achieved through improvements in material quality, device design, and driver circuitry. Siliconorganic hybrid soh machzehnder modulators for. This beamlab demo shows the beam propagation through a machzehnder. Optical frequency comb generation based on chirping of mach. Simulink library for silicon photonics systems simulation.
The dual parallel machzehnder dpmz modulator is ideally suited for use in metro, longhaul lh and ultra longhaul ulh optical transport applications. An interferometer is an optical device which utilizes the effect of interference. The output amplitude can be controlled with an externally applied voltage. Matlab simulink simulation platform for photonic transmission systems. Ling liao, dean samararubio, michael morse, ansheng liu, dexter hodge, doron rubin, ulrich d. To understand how it works and how to optimize its design, you can use the comsol simulation software. Optsim circuit is a design automation tool for pic design. Onchip modulation for rotating sensing of gyroscope based on ring resonator coupled with machzehnder interferometer skip to main content thank you for visiting. Thus i needed to model a mach zehnder modulator for modulating data on carrier laser for transmission purpose. In this example, we will study the performance of a pin mach zehnder modulator using charge electrical simulation and mode optical simulation. Optimizing machzehnder modulator designs with comsol.
The machzehnder check interferometer is a highly configurable instrument. Frequency response of each machzehnder interferometer is also very important to achieve highspeed signals. The integration of laser source and machzehnder mz modulator offers benefits arising from cost effective packaging and wavelengthindependent behavior making it an ideal transmitter concept for wdm systems. We demonstrate a silicon modulator with an intrinsic bandwidth of 10 ghz and data transmission from 6 gbps to 10 gbps. This matlab function returns a structure, s, containing this information for the comm. Finally, basic bulk electrooptic modulators are described in the fourth section, modulator devices including some design considerations and performance criteria. Intensity distribution in the machzehnder modulator stacked xy slices about beamlab beamlab is an awardwinning set of simulation tools for beam propagation through optical devices and waveguides in your familiar matlab environment. Osa multifunction machzehnder modulator for pulse shaping. Cpmmodulatorname,value creates a cpm modulator object, h. We present a multifunction electronicphotonic integrated circuit epic design which exploits a new operation mode of a mach zehnder modulator mzm.
Home forums system difference between machzehnder modulator and mach zehnder interferometer difference between machzehnder modulator and mach zehnder interferometer nagesh kuknoor joined april 2016 participant hello optiwave. Now by putting the electrodes around the arms of the mzi, we can create a kind of phase modulator. To learn more about digital modulation, see digital modulation. A recirculating delayed selfheterodyne method using a. Optisystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks. Implementation of machzehnder modulation otdm system ijert. External modulators and, electrooptic machzehnder modulator ijaist. Onchip modulation for rotating sensing of gyroscope based on. To start optisystem, perform the following procedure. Filter information about fm broadcast modulator matlab. Jan 22, 2016 onchip modulation for rotating sensing of gyroscope based on ring resonator coupled with mach zehnder interferometer skip to main content thank you for visiting. Different from the conventional design, the two arms of the modulator are driven by timeshifted signals of tunable amplitude. I want to know about mach zehnder modulator and machzehnder interferometer and what is. The integration of laser source and mach zehnder mz modulator offers benefits arising from cost effective packaging and wavelengthindependent behavior making it an ideal transmitter concept for wdm systems.
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