Learn more about mach zehnder, matrix, interferometer matlab. 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. The electrooptic effect is one of the most important phenomena in mach zehnder mzi interferometer structure. You can use this element in the rfbudget object and the circuit object. Lithium niobate mach zehnder modulators are suited for use in metro, longhaul lh and ultra longhaul ulh optical transport. The channel waveguide can be created on the lithiumniobate substrate. The paper contains the discussion of electrooptic effect based mzi structure. Introduction to ixblue machzehnder modulators bias. However, there is always a small difference between the. These userconfigurable systems integrate a mach zehnder intens. Our dedicated photonic device, circuit, system and layout software suites serve as an integrated framework for developing a wide range of photonic applications, including novel photonic devices, photonic integrated circuits, and.
The mach zehnder interferometer is an important diagnostic tool. Barry abstracthighly linear integrated optical modulators are required in order to provide a distribution platform for analog radiooverfiber rof signals. Implementation of machzehnder modulation otdm system ijert. In beamlabs demos directory you can find these and additional examples. Optical frequency comb generation based on chirping of mach.
Connect the nrz pulse generator output port to the available mach zehnder modulator input port. The modulator controls the amplitude of an optical wave as it passes through the device. The interferometer has been used, among other things, to measure phase shifts between the two beams caused by a sample or a change in length of one of the paths. The schematic diagram of mach zehnder mz modulator is shown in figure 2. The advantages and applications of the machzehnder. 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. Apr 29, 2019 implementation of mach zehnder modulation otdm system written by karthik s, d dhanush, harish s v published on 20190429 download full article with reference data and citations. Connect the cw laser output port to the mach zehnder modulator input port. Overlop between the phase obtained with matlab and vpi pag. The output is a result of interference, ranging from.
A machzehnder modulator bias controller based on oma and average power monitoring minhyeong kim, byungmin yu, student member, ieee, and wooyoung choi, member, ieee abstractwe demonstrate an integrated circuit ic implemented in 28nm cmos technology for machzehnder modulator mzm bias control. I need to convert a gfdm signal into optical signal with mach zehnder modulator. The jenoptik integrated optical amplitude modulator is a fibercoupled electrooptical light modulator. Communications systems, matlab simulink simulation, optical communications. Two phase modulators can be placed in parallel using an interferometric structure. The machzehnder interferometer is a simple highly configurable device used to demonstrate interference by division of amplitude. Design of barker code generator in optical domain using machzehnder interferometer 677 let us say, if the voltage difference between these two electrodes is and is the separation between the electrode, the electric field will be approximately. Performance analysis of machzehnder modulator using fuzzy. Use the modulator object to create a modulator element. This electrode configuration allows for separate control of both dc and rf modulating signals, as well as separate electrooptic control of both upper and lower arms of the mzm. The pindiode phase shifter, which consists of a sidewallgrating waveguide, was loaded into the ring resonator. Description the 10 gbitss electrooptic modulator is designed for longwavelength, singlemode external amplitude modulation applications. The transfer function mach zehnder interferometer with one arm loaded with double micro ring resonator is.
Premade functions for microrings, bragg gratings, multimode interferometer. Such a modulator is called mach zehnder intensity electrooptic modulator or simply mach zehnder modulator mzm. Learn more about optical fiber, mach zehnder modulator, machmach zehnder modulator simulink. We present a multifunction electronicphotonic integrated circuit epic design which exploits a new operation mode of a mach zehnder modulator mzm. External modulators and mathematical modeling ofmach zehnder. More sophisticated version of the machzehnder interferometer diagram. Such a modulator is called machzehnder intensity electrooptic modulator or simply machzehnder modulator mzm. Because of its relatively large and freely accessible working space and flexibility of location of the fringes, it is the. To understand how it works and how to optimize its design, you can use the comsol simulation software. Simulating mach zender modulator by optisystem haidarmuh. The setup includes two cascaded mach zehnder modulators mzms, a sinusoidal wave oscillator, and an electrical time delay. The machzehnder interferometers mzis can be used to perform the optical switching based on the principle of electrooptic eo effect.
Integrated machzehnder interferometerbased modulators for. Practical challenges for implementing this method with a silicon mach zehnder modulator are discussed, but the analysis is general to other material platforms. I used dual drive mach zehnder modulator component to make a constant magnitude for all comb lines. Modulation of 87 gbaud was demonstrated with a dualparallel machzehnder modulator. Apr 20, 2015 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. The analysis is carried out by simulating the proposed device with matlab. 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. With beamlab you can solve a wide range of different beam propagation and waveguide analysis problems. Complex phase biasing of silicon machzehnder interferometer. Different from the conventional design, the two arms of the modulator are driven by timeshifted signals of tunable amplitude. Jun 30, 2010 frequency response of each machzehnder interferometer is also very important to achieve highspeed signals. Design of barker code generator in optical domain using mach. A new approach for the generation of an optical frequency comb, based on chirping of modulators, is proposed and numerically demonstrated. Researchers developed and demonstrated for the first time a siliconbased electrooptical modulator that is smaller, as fast as and more efficient than stateoftheart technologies.
The switching between the ports is achieved by an electrooptic effect within such structure. Optical frequency comb generation based on chirping of. Someone can help me to have a code in matlab that perform this operation. Optisystem allows you to visualize simulation results in a number of ways.
An electrooptic switch is a device used in integrated fibre optics. Design of barker code generator in optical domain using. A b source of photons 50% reflector 100% reflector figure 2. Cpmmodulatorname,value creates a cpm modulator object, h. Mach zehnder interferometer modulator vt electrode a b in c out d. Maldonado department of electrical engineering the uni y ersity of texas at arlington arlington, texas 1 3. In addition to amplitude modulation, a phase skip of. The schematic of a typical split upper and lower and dual electrode separate dc and rf configured machzehnder external modulator is shown in fig. The mach zehnder interferometer is a simple highly configurable device used to demonstrate interference by division of amplitude. I am trying to make a simulation model for receiver shot and thermal noise and monitering it. The proposed techniques are simulated on the matlab software. Modeling of machzehnder and electroabsorption modulator.
A machzehnder modulator is an optical modulator used for communication systems. Optical simulation of a machzehnder modulator beamlab. Optimizing machzehnder modulator designs with comsol software. A highspeed silicon optical modulator based on a metal. Matlab simulink simulation platform for photonic transmission. We achieved 50gbs operation of a ringresonatorbased silicon modulator for the first time. Machzehnder modulator modulated radiooverfiber transmission system using dual. Older versions% of matlab can copy and paste entirebloc.
The schematic of a typical split upper and lower and dual electrode separate dc and rf configured mach zehnder external modulator is shown in fig. Diagram of a simple machzehnder interferometer, ignoring the thickness of the beamsplitters. If a voltage is applied across one of the arms, a phase shift is induced for the wave passing through that arm. Apr 08, 2014 the mach zehnder modulator is a type of optical modulator used for communication applications. We offer modulators for wavelengths in the vis and ir spectral range for this purpose.
Javier romerovivas, aidan meehan and lukasz krzczanowicz optical communications research group, dept. Dacx1416 optimized solution to modulator biasing in ratio. We can enhance the bandwidth of the response by using thin substrate. Electrooptic machzehnder interferometer based optical digital.
The intensity modulators are designed to have equal arms and thus balanced optical paths. Mach zehnder 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. This property requires a scalar or vector with odd integer elements between modulationorder 1 and modulationorder 1. The mach zehnder interferometer structure working on the principle of electrooptic effect behaves as the powerful optical switching device. Thorlabs allinone digital reference transmitters are based on proven lithium niobate linbo3 modulator technology driven by highfidelity rf amplifiers. Synopsys photonic tools offer a powerful and complete software solution for scientists and engineers looking to design the next generation of photonics technologies.
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. On the performance of a linearized dual parallel mach. Learn how it works and how to optimize its design using. Large signal analysis of machzehnder modulator intensity. The input waveguide is split up into two waveguide interferometer arms. It is strongly encouraged to get the free software klayout to look at your gds files. A mach zehnder modulator is used to control the amplitude of an optical wave which is given to it. Silicon mach zehnder modulator colm browning, alexander gazman, nathan abrams, keren bergman, and liam p. This study provides experimental and analytical results showing an enhancement up to 20 db in the 3rdorder intermodulation distortion factor at 5 ghz using rf and optical asymmetrical feeding factors. Optionally, passive rc filters can be used for limiting the bandwidth further after considering. The performance of a dual parallel differential mach zehnder modulator broadband linearization architecture is analysed.
The machzehnder modulator is a type of optical modulator used for communication applications. The device is named after physicists ludwig mach and ludwig zehnder. It uses the mach zehnder interferometer principle in waveguides, enabling you to transmit signals with particularly high modulation frequencies up to the gigahertz range. Modeling of mach zehnder and electroabsorption modulator pulse generators and extraction of the chirp factor michael j. In this thesis we present the study of the implementation of ultrashort pulses using frequency comb generation in a mach zehnder modulator and chirp compensation in a standard singlemode fiber. Two possible configurations have been developed and optimized to obtain a picosecond pulse train. Challenge the mzm involves electronic, process, and optical physics. The device is based on machzehnder interferometer made by titanium diffusion in lithium niobate substrate. Machzehnder interferometers are also used to study one of the most counterintuitive predictions of quantum mechanics, the phenomenon known as quantum entanglement.
External modulators and mathematical modeling ofmach. Create another modulator object that is an upconverter and has an output thirdorder intercept oip3 of dbm. How to simulate dual drive mach zehnder modulator in matlab. However, the suitability of the techniques is verified using the highly reliable optibpm. A mach zehnder modulator is used for controlling the amplitude of an optical wave. Analysis of machzehnder interferometer with one arm loaded. When the two arms are recombined, the phase difference between the two waves is. Optsim circuit is a design automation tool for pic design. Search mach zehnder modulator matlab code, 300 results found matlab code for digital voice processing and matlab simulation matlab code for digital voice processing and simulation of matlab source code download electronic publishing. Performance analysis of rof link using machzehnder modulator.
A model of fuzzy logic inference system with mz modulator is developed using matlab 7. This object has each specified property set to the specified value. Highspeed, fiberoptic, digital reference transmitters. Can anyone suggest a free software for drawing optical schematics. The first mzm is driven directly by a sinusoidal wave, while the second mzm is driven by a delayed replica of the sinusoidal wave. 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. Osa multifunction machzehnder modulator for pulse shaping. Beamlab consists of two toolboxes, the beam propagation toolbox and mode solver toolbox. It is most frequently used in the fields of plasma physics, aerodynamics, and heat transfer to measure density, pressure, and temperature changes in gases. Implementation of machzehnder modulation otdm system. Wavelength tunable short pulses sources based on frequency. It contains a library of useful elements flicker noise generator, machzehnder modulator, etc.
The first part of the chapter presents the vpi program, with its features. The optical wave enters from the input side and then splits equally into two arms. Beamprop beam propagation method software rsoft photonic. Access to the travelled distance physical or optical of any waveguide. This is matlab simulink software written by michael fleyer. Iq or intensity mach zehnder supported modulation formats all, no dependency max. The proper feedback mechanism with the delay unit provides the.
Schematic diagram of mach zehnder modulator the schematic of machdiagram zehnder mz modulator is shown in figure lithium niobate 2. Mathworks is the leading developer of mathematical computing software for engineers and scientists. Solving mach zehnder interferometer using matrix matlab. The most popular modulator in optical communication systems is the lithium niobate linbo3 mach zehnder modulator mzm.
The incoming light is split into two branches, different phase shifts applies to each path, and then recombined. A number of oeos can be easily coupled, and the main model is an example of a dual oeo that is equivalent to the dualloop oeo simulation software example below by etgar c. Thus i needed to model a mach zehnder modulator for modulating data on carrier laser for transmission purpose. Specify the data symbols used by the modulator prior to the first call to the step method in reverse chronological order. Mach zehnder modulators are suited for use in metro, longhaul lh and ultra longhaul ulh optical transport applications 34. Optimizing machzehnder modulator designs with comsol. Beamprop is the industryleading design tool based on the beam propagation method bpm for the design and simulation of integrated and fiberoptic waveguide devices and circuits. 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. Vpiphotonics integrated laser machzehnder modulator.
The technique based on combining a mach zehnder modulator and a doublemicro ring all pass filter in one of its arms exhibits much smaller nonlinear distortion than the standard mach zehnder modulator. Implementation of sequential logic circuits using the mach. In physics, the machzehnder interferometer is a device used to determine the relative phase shift variations between two collimated beams derived by splitting light from a single source. Here the thicknesses of the beamsplitters and the re.
It contains a library of useful elements flicker noise generator, mach zehnder modulator, etc. The software has been commercially available since 1994, and is in use by leading researchers and development engineers in both university and industrial. To date, the fastest siliconwaveguidebased optical modulator that has been demonstrated experimentally has a modulation frequency of only. Create a modulator object with a gain of 4 db and local oscillator lo frequency of 2 ghz. How would one model machzehnder modulator in simulink. Performance analysis of machzehnder modulator using. Matlab simulink is one of the most userfriendly software platforms that can write. Electrooptic modulator august 1999 2 lucent technologies inc.
A machzehnder modulator is used for controlling the amplitude of an optical wave. The device contains two input ports and two output ports associated with electrodes. Performance analysis of rof link using machzehnder. The work outlined examines the performance of multiple bands of generalized. Analysis of machzehnder interferometer with one arm. They are designed for highspeed fiber optic test and measurement applications. This example demonstrates the simulation of a 3d machzehnder modulator mzm implemented on silicononinsulator, using synopsys sentaurus tcad and rsoft tools.
The driving voltage and optical insertion loss at 50gbs were 1. I want to simulate dual drive mach zehnder modulator in matlab. Dacx1416 delivers optimized solution to mach zehnder modulator biasing in both ratio and dithertype circuits 6 oifdpcrx01. The forwardbiased operation mode was applied, which exhibited a v. A machzehnder modulator is used to control the amplitude of an optical wave which is given to it. Electronic and computer engineering, university of limerick, limerick, ireland. Voltagecontrolled integrated laser machzehnder modulator. This object modulates the input signal using the continuous phase modulation cpm method. Machzehnder modulator mzm set bias voltage at minimum transmission point v bias v.