| People | Locations | Statistics |
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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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Smith, Peter G. R.
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2020Identifying mechanical vibration modes of a cantilever using spectrally multiplexed Bragg gratings and machine learning
- 2020Four-port integrated waveguide coupler exploiting bi-directional propagation of two single-mode waveguides
- 2018Direct UV written integrated waveguides using 213nm light
- 2017High-birefringence direct-UV-written silica waveguides for heralded single-photon sources at telecom wavelengths
- 2016An integrated optical Bragg grating refractometer for volatile organic compound detectioncitations
- 2016Photonic quantum networks
- 2015Optically integrated fiber: a new platform for harsh environmental sensing
- 2015Planarised optical fiber composite using flame hydrolysis deposition demonstrating an integrated FBG anemometer
- 2014Planarised optical fiber composite using flame hydrolysis deposition demonstrating an integrated FBG anemometercitations
- 2013Low optical-loss facet preparation for silica-on-silicon photonics using the ductile dicing regimecitations
- 2013Polish-like facet preparation via dicing for silica integrated opticscitations
- 2013Facet machining of silica waveguides with nanoscale roughness without polishing or lapping
- 2010Micromachined multimode interference device in flat-fibercitations
- 2010Integrated optic glass microcantilevers with Bragg grating interrogationcitations
- 2010Fiber and integrated waveguide-based optical sensorscitations
- 2007Line defects and temperature effects in liquid crystal tunable planar Bragg gratingscitations
- 2005Direct UV writing for channel definition on FHD silica-on-silicon
- 2003Direct-UV writing of channel waveguides in a bulk photosensitive tin doped sodium silicate glass
- 2003Integrated optical structures written in a polymer film by UV-induced refractive index modification
- 2000Broadband monolithic acousto-optic tunable filtercitations
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.