Voltage driven 1x2 multimode interference optical switch in InP/InGaAsP

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Abstract

A voltage driven InP/InGaAsP 1x2 optical switch based on multimode interference (MMI) is proposed and numerically studied. In plane shift of the optical field across the output cross section of a multimode waveguide enables optical switching between two symmetric output waveguides. Two twin electrodes on top of the multimode waveguide are tuned with reverse bias voltage to switch output port by reconfiguration of the refractive index profile. The optical switching mechanism and the design method are explained through a modal analysis of the wide perturbed waveguide. An
optical switch design with an input waveguide width of 20 µm, output waveguide widths of 8 µm and electrode length of 1.3 mm is proposed. The numerical prediction of the device performance is provided by combining a calibrated model of the voltage perturbed refractive index and absorption with electrical and optical solvers. Simulation results show that an extinction ratio of 29 dB can be achieved at an optical wavelength of 1550 nm and with a switching voltage of -12 V
LanguageEnglish
Number of pages7
JournalIET Optoelectronics
DOIs
StateAccepted/In press - 3 Jul 2019

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Optical switches
Waveguides
switches
waveguides
interference
Electric potential
electric potential
output
optical switching
Refractive index
Electrodes
refractivity
Optical waveguides
Modal analysis
Bias voltage
electrodes
Switches
extinction
Wavelength
shift

Cite this

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title = "Voltage driven 1x2 multimode interference optical switch in InP/InGaAsP",
abstract = "A voltage driven InP/InGaAsP 1x2 optical switch based on multimode interference (MMI) is proposed and numerically studied. In plane shift of the optical field across the output cross section of a multimode waveguide enables optical switching between two symmetric output waveguides. Two twin electrodes on top of the multimode waveguide are tuned with reverse bias voltage to switch output port by reconfiguration of the refractive index profile. The optical switching mechanism and the design method are explained through a modal analysis of the wide perturbed waveguide. Anoptical switch design with an input waveguide width of 20 µm, output waveguide widths of 8 µm and electrode length of 1.3 mm is proposed. The numerical prediction of the device performance is provided by combining a calibrated model of the voltage perturbed refractive index and absorption with electrical and optical solvers. Simulation results show that an extinction ratio of 29 dB can be achieved at an optical wavelength of 1550 nm and with a switching voltage of -12 V",
author = "Simone Cardarelli and Nicola Calabretta and Patty Stabile and Kevin Williams",
year = "2019",
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doi = "10.1049/iet-opt.2018.5081",
language = "English",
journal = "IET Optoelectronics",
issn = "1751-8768",
publisher = "Institution of Engineering and Technology (IET)",

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AU - Cardarelli,Simone

AU - Calabretta,Nicola

AU - Stabile,Patty

AU - Williams,Kevin

PY - 2019/7/3

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AB - A voltage driven InP/InGaAsP 1x2 optical switch based on multimode interference (MMI) is proposed and numerically studied. In plane shift of the optical field across the output cross section of a multimode waveguide enables optical switching between two symmetric output waveguides. Two twin electrodes on top of the multimode waveguide are tuned with reverse bias voltage to switch output port by reconfiguration of the refractive index profile. The optical switching mechanism and the design method are explained through a modal analysis of the wide perturbed waveguide. Anoptical switch design with an input waveguide width of 20 µm, output waveguide widths of 8 µm and electrode length of 1.3 mm is proposed. The numerical prediction of the device performance is provided by combining a calibrated model of the voltage perturbed refractive index and absorption with electrical and optical solvers. Simulation results show that an extinction ratio of 29 dB can be achieved at an optical wavelength of 1550 nm and with a switching voltage of -12 V

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