3 edition of Investigation of a GaAlAs Mach-Zehnder electro-optic modulator found in the catalog.
Investigation of a GaAlAs Mach-Zehnder electro-optic modulator
by The Center, For sale by the National Technical Information Service in [Cleveland, Ohio], [Springfield, Va
Written in English
|Statement||David M. Materna ; prepared for Lewis Research Center under Grant NCC 3-54|
|Series||NASA contractor report -- 179573, NASA contractor report -- NASA CR-179573|
|Contributions||Lewis Research Center|
|The Physical Object|
|Pagination||v, 163 p.|
|Number of Pages||163|
Here we overcome these limitations and demonstrate a monolithically integrated ITO electro-optic modulator based on a Mach Zehnder interferometer featuring a high-performance half-wave voltage and active device length product of V π L = V by: tions the extraordinary index change by electro-optic effect in LiNbO3 is given by : z e e E n r n 2 Δ = 33 (1) where ne is the extraordinary index, z the applied E electric field and r33 the corresponding electro-optic coefficient ( pm/V). As the r33 is three times higher that the r13 coefficient, the change on the ordi-nary index.
1 GHz plasmonic Mach-Zehnder modulator enabling sub-THz microwave photonics Maurizio Burla,1,* 1Claudia Hoessbacher,1 1Wolfgang Heni, Christian Haffner,1 Yuriy Fedoryshyn, Dominik Werner,1 3 Tatsuhiko Watanabe,1Hermann Massler,2 Delwin Elder, Larry Dalton,3 and Juerg Leuthold1 1 Institute of Electromagnetic Fields, ETH Zurich, Gloriastra Zurich , SwitzerlandAuthor: Maurizio Burla, Claudia Hoessbacher, Wolfgang Heni, Christian Haffner, Yuriy Fedoryshyn, Dominik Wer. Fig. 1. Packaged electro-optic Mach-Zehnder amplitude modulator structure. much worse when complex, non-uniform modulators are to be designed, such as phase-reversal modulators , wherein the optical-microwaveinteraction has to be modulated in each mod-ulator section according to a global requirement concerning theCited by: 4.
Abstract. In this study, thin films of lithium niobate are wafer bonded onto silicon substrates and rib-loaded with a chalcogenide glass, Ge 23 Sb 7 S 70, to demonstrate strongly confined single-mode submicron waveguides, microring modulators, and Mach-Zehnder modulators in the telecom C μm radii microring modulators present dB/cm waveguide propagation loss, × Author: Rao, Ashutosh. Intensity distribution in the Mach-Zehnder modulator (stacked x–y slices) Finally, the power in each core can also be independently traced during a calculation. In the figure below, the blue curve represents the power in the arm located in the positive x region calculated over a circular area of the same extension as the waveguide core.
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Investigation of a GaAlAs Mach-Zehnder electro-optic modulator. [David M Materna; Lewis Research Center.] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for # Mach-Zehnder interferometers\/span> \u00A0\u00A0\u00A0 schema. Introduction. With the rapid development of communication technology, especially in the field of microwave-optic communications, the signal frequency increases, the modulator need have the characteristics of high-speed, wide bandwidth, low loss and so on.
Organic polymers as electro-optic materials have attract more attention in high-speed modulation systems with the advantages of the Cited by: 1. A travelling-wave Mach-Zehnder modulator using the electro-optic effect of GaAs and operating at a wavelength of microns has been investigated for the first time.
A four layer Strip-loaded ridge optical waveguide has been analyzed using the effective index method and single mode waveguides have been : David M.
Materna. A travelling-wave Mach-Zehnder modulator using the electro-optic effect of GaAs and operating at a wavelength of microns has been investigated for the first time. A four layer Strip-loaded ridge optical waveguide has been analyzed using the effective index method and single mode waveguides have been designed.
Investigation of a type of Mach–Zehnder modulator based on optical bias Article in Optik - International Journal for Light and Electron Optics (14)– July with 17 Reads.
We have reported the first GaAlAs integrated coherence modulator based on the use of an unbalanced Mach–Zehnder interferometer and electro-optic effect. The vertical waveguide consists of a five layer GaAs–GaAlAs structure grown by molecular beam epitaxy.
4 μm wide rib waveguides were then defined on the planar by: 8. to realize GaN based MZI for future optical modulator devices.
Key-Words: GaN, Mach Zehnder interferometer, electro-optic, modulator 1 Introduction Gallium Nitride (GaN) has attracted much attention among researcher because of its superior properties, such as wide-bandgap, high electron mobility and good thermal stability [1,2].File Size: 1MB.
The analysis and design of a GaA1As Mach-Zehnder electro-optic modulator operating at μm is presented. Optical modulations is achieved through coplanar 50Ωtraveling wave microwave electrodes with a resulting 3 db bandwidth-length product of by: 3.
Frequency response of each Mach–Zehnder interferometer is also very important to achieve high-speed signals. We can enhance the bandwidth of the response by using thin substrate. Modulation of 87 Gbaud was demonstrated with a dual-parallel Mach–Zehnder by: 1.
An electro-optic modulator (EOM) is a device which can be used for controlling the power, phase or polarization of a laser beam with an electrical control signal. Electro-optic effect is the modificatiın of refractive index of a nonlinear crystal by an external Size: KB.
As one of the core devices for an electro-optic analog-to-digital converter (ADC), the Mach–Zehnder (MZ) modulator plays an important role, and the output stability of the MZ modulator has a decisive influence on the conversion accuracy of the ADC.
This paper proposed a pilot tone-based method to stabilize the bias point of the modulator. Optimised electro-optic devices made by MOCVD of GaAlAs/GaAs have achieved high efficiencies.
Mach-Zehnder modulators with 6 mm electrodes have achieved 95 percent modulation for a Cited by: 2. We report on high-extinction-ratio, ultrafast plasmonic Mach–Zehnder modulators.
We demonstrate data modulation at line rates up to 72 Gbit/s (BPSK) and Gbit/s (4-ASK). Andreani, M. Waldow, J. Leuthold, and W. Freude, “High-speed low-voltage electro-optic modulator with a polymer-infiltrated silicon photonic crystal waveguide Cited by: Abstract: The Mach-Zehnder modulator (MZM) has been widely used for broadband photonic analog links and high-speed digital optical fiber communication systems because it possesses large modulation bandwidth, low driving voltage, and low chirp.
The MZM is a very important optical modulator for photonic applications. In an MZM, the input light is split into two paths, each of which is modulated Cited by: Abstract: We demonstrate Mach-Zehnder interferometric waveguide intensity modulators which employ electrorefraction due to the quantum-confined Stark effect in multiple quantum well (MQW) GaAs/AlGaAs.
These devices exhibit average half-wave voltage-length products as low as V/spl middot/mm and extinction ratios greater than dB, which are superior to any MQW devices of this by: Pseudorandom bit sequence of a silicon Mach–Zehnder interferometer modulator containing a single mm-long MOS capacitor phase shifter in one arm at a data bit rate of 1 Gbit s Full size imageCited by: An electro-optic modulator (EOM) is an optical device in which a signal-controlled element exhibiting an electro-optic effect is used to modulate a beam of modulation may be imposed on the phase, frequency, amplitude, or polarization of the beam.
Modulation bandwidths extending into the gigahertz range are possible with the use of laser-controlled modulators. The electro-optic 3×3 switching device using Titanium diffused lithium niobate or the Ti:LiNbO3 as waveguide medium in the optical switch design based on Integrated Mach-Zehnder interferometer is.
On-chip optical isolators not requiring the use of magneto-optical materials has become a long-standing challenge in integrated optics.
Here, we demonstrate that a traditional travelling-wave modulator can effectively function as an optical isolator, when driven under a prescribed modulation condition.
By using an off-shelve lithium niobate modulator, we achieve more than dB isolation. An electro-optic switch is a device used in integrated fibre optics. The device is based on Mach-Zehnder interferometer made by Titanium diffusion in Lithium Niobate substrate. The switching between the ports is achieved by an electro-optic effect within such structure.
As the electro-optic transfer characteristic of a Mach Zehnder modulator is cos2-shaped, the modulator will be biased in the linear range (between the maximum and minimum) and the modulation signal will be superimposed onto the bias voltage. If electrical NRZ data with an amplitude of Vπ are fed into the modulator, the optical outputFile Size: 1MB.In this study, we designed, simulated, and optimized proton exchanged integrated Mach-Zehnder modulators in a μm-thick x-cut lithium niobate thin film.
The single-mode conditions, the mode distributions, and the optical power distribution of the lithium niobate channel waveguides are discussed and compared in this study. The design parameters of the Y-branch and the separation distances Cited by: 1. A Mach-Zehnder modulator is used to control the amplitude of an optical wave which is given to it.
The input waveguide is split up into two waveguide interferometer arms. If a voltage is applied across one of the arms, a phase shift is induced for the wave passing through that arm.