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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Horak, Peter
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2021Abstract 449: A standard operating procedure for the curation of gene fusions
- 2021Gas-induced differential refractive index enhanced guidance in hollow-core optical fiberscitations
- 2020Four-port integrated waveguide coupler exploiting bi-directional propagation of two single-mode waveguides
- 2018Wavelength conversion and supercontinuum generation in silicon optical fiberscitations
- 2018Novel fiber design for wideband conversion and amplification in multimode fiberscitations
- 2016Phase matched parametric amplification via four-wave mixing in optical microfiberscitations
- 2016Nanopores within 3D-structured gold film for sensing applications
- 2016All-fiber fourth and fifth harmonic generation from a single sourcecitations
- 2015Tunable optical buffer based on III-V MEMS design
- 2014Fabrication of multiple parallel suspended-core optical fibers by sheet-stackingcitations
- 2013Laser-induced forward transfer on compliant receiverscitations
- 2012Laser-induced crystalline optical waveguide in glass fiber formatcitations
- 2011Manipulating the structure of ion Coulomb crystals with light
- 20111.06 µm picosecond pulsed, normal dispersion pumping for generating efficient broadband infrared supercontinuum in meter-length single-mode tellurite holey fiber with high Raman gain coefficientcitations
- 2010Dispersion controlled highly nonlinear fibers for all optical processing at telecoms wavelengthscitations
- 2010Near-zero dispersion, highly nonlinear lead-silicate W-type fiber for applications at 1.55µmcitations
- 2010Efficient near-infrared supercontinuum generation in tellurite holey fiber pumped 320nm within the normal dispersion regime
- 2009Optical fiber nanowires and microwires: fabrication and applicationscitations
- 2009Dispersion-shifted all-solid high index-contrast microstructured optical fiber for nonlinear applications at 1.55µmcitations
- 2009Four-wave mixing-based wavelength conversion in a short-length of a solid 1D microstructured fibre
- 2008Single-mode tellurite glass holey fiber with extremely large mode area for infrared nonlinear applicationscitations
- 2007RGB generation by four-wave mixing in small-core holey fibers
- 2007Mid-IR supercontinuum generation from non-silica microstructured optical fiberscitations
Places of action
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document
Four-port integrated waveguide coupler exploiting bi-directional propagation of two single-mode waveguides
Abstract
We propose and numerically simulate a new and highly compact integrated 4x4 mode coupler based on two single-mode waveguides exploiting both forward and backward propagating directions to double the number of modes. The two parallel waveguides are coupled via long and short-period gratings to the co- and counter-propagating directions, respectively, of a single cladding mode of the device which acts as a bus between the waveguides. By connecting all end facets to optical circulators we construct a device with four input and output ports but only using two single-mode waveguides. Such a device can be fabricated in a single micromachined silica ridge structure. A photosensitive raised index layer is used for vertical confinement that supports multiple modes horizontally. We UV-write the waveguides and the Bragg gratings and provide a tilt angle to improve coupling. We have demonstrated this technology before for a polarizing waveguide-to-waveguide coupler and have simulated other unidirectional devices. We use coupled mode theory to simulate the system. By tailoring the grating parameters, we can achieve a wide variety of coupling ratios. Analytically, we find a set of solutions in which no light escapes via the cladding modes through the ends of the device and we have calculated device parameters to achieve a wide range of splitting ratios including coupling light from one input port equally into all output ports. Moreover, we derived analytically a set of parameters to implement a Walsh-Hadamard transformation and are investigating further options to implement a universal 4x4mode-coupler on this platform. We envisage that the device can be used for quantum information processing where two qubits are encoded in the waveguides using a photon in each propagation direction.