Dr. Claudio J. Oton Profile

Dr. Claudio J. Oton

at Scuola Superiore Sant'Anna

SPIE Involvement:

Author

Publications (14)

Proceedings Article | 17 March 2023 Presentation + Paper

Miniaturized photonic sensors based on micro-interferometers

C. Oton, J. Elaskar, F. Bontempi, F. Piretta, R. M. Ayaz, S. Faralli, F. Di Pasquale

Proceedings Volume 12424, 124240S (2023) https://doi.org/10.1117/12.2655436

KEYWORDS: Interferometers, Polarization, Waveguides, Silicon, Sensors, Photodetectors, Miniaturization, Silicon photonics

Read Abstract +

Proceedings Article | 23 May 2018 Presentation

Automatic alignment of photonic components of massive optical switch to ITU channels (Conference Presentation)

Astghik Chalyan, Stefano Tondini, Giorgio Fontana, Lorenzo Pavesi, Nikola Zecevic, Michael Hofbauer, Bernhard Goll, Horst Zimmermann, Francesco Testa, Stefano Stracca, Alberto Bianchi, Costanza Manganelli, Philippe Velha, Paolo Pintus, Claudio Oton, Christophe Kopp, Laetitia Adelmini, Olivier Lemonnier, Gabriel Pares, Guido Chiaretti, Aina Serrano, Jose Ángel Ayucar, Giovani Battista Preve, Jong Moo Lee, Claudio Castellan

Proceedings Volume 10686, 1068613 (2018) https://doi.org/10.1117/12.2306433

KEYWORDS: Optical switching, Switching, Automatic alignment, Integrated optics, Photonic integrated circuits, Channel projecting optics, Germanium, Optical components, Control systems, Photodiodes

Read Abstract +

We demonstrate the automatic thermal alignment of photonic components within an integrated optical switch. The WDM optical switch involves switching elements, wavelength de-multiplexers, interleavers and monitors each one needing independent control. Our system manages rerouting of channels coming from four different directions, each carrying 12, 200GHz spaced, wavelengths into eight add/drop ports. The integrated device includes 12 interleavers, which can act either as optical de-interleavers to split the optical signal into odd and even channels or as optical interleavers that recombine the odd and even channels coming from the switching matrix. Integrated Ge photodiodes are placed in key positions within the photonic integrated circuit (PIC) are serve for monitoring. An electronic integrated circuit (EIC) drives the photonic elements by means of dedicated heating circuits (824 on-board heater control cells, 768 for the switching elements and 56 for the interleavers and the mux/de-mux) and reads out the Ge diodes photocurrent through TIAs. We applied a stochastic optimization algorithm to align the spectral response of the interleavers to the ITU grid. We exploit the thermo-optic effect to shift the interleavers pass-band in a desired spectral position. The interleavers are provided with dedicated metallic heaters that can be operated in order to tune the interleaver response, which is typically misaligned due to fabrication inaccuracies. The experimental setup is made of a tunable laser coupled with one input port of optical switch. The optimization algorithm is implemented via a software to drive the EIC till finding the best heating configuration (on the two branches of the interleaver) on the basis of the monitor diode-feedback. This way, the even and odd wavelengths input in the interleaver are directed toward the wanted lines within the switching matrix. Our method has been used for aligning the micro-ring based switching elements in the PIC as well. In that case, the integrated Ge photodiodes have been used to align the photonic components in the PIC in order to enable different pathways for the routing or the broadcasting operation of the optical switch. With no bias applied to the heaters of the switching elements, the optical signal is expected to be maximum at the through port. When the micro-ring heaters are biased, the feedback controller finds the best set of heating values that minimize the optical power at the through port of the switching node. This way, the optical signal is coupled in the drop port and the node is enabled for switching. The algorithm, implemented in LabVIEW, converges over multiple instances and it is robust against stagnation. This work aims at enabling the automatic reconfiguration/restoration of the whole WDW optical switch.

Proceedings Article | 14 May 2018 Paper

Stable dynamic phase demodulation in a DAS based on double-pulse ϕ-OTDR using homodyne demodulation and direct detection

Yonas Muanenda, Stefano Faralli, Claudio Oton, Fabrizio Di Pasquale

Proceedings Volume 10654, 106540B (2018) https://doi.org/10.1117/12.2304975

KEYWORDS: Demodulation, Phase shift keying, Backscatter, Phase modulation, Sensors, Ferroelectric materials, Receivers, Modulation, Homodyne detection, Actuators

Read Abstract +

Proceedings Article | 20 February 2018 Presentation + Paper

Silicon-photonic interferometric biosensor using active phase demodulation

Y. Marin, V. Toccafondo, P. Velha, S. Scarano, S. Tirelli, A. Nottola, Y. Jeong, H. Jeon, M. Minunni, F. Di Pasquale , C. Oton

Proceedings Volume 10510, 1051005 (2018) https://doi.org/10.1117/12.2287803

KEYWORDS: Refractive index, Waveguides, Sensors, Demodulation, Interferometers, Silicon, Phase shift keying, Modulation, Liquids, Phase shifts

Read Abstract +

Proceedings Article | 23 April 2017 Paper

Fiber Bragg grating sensor interrogators on chip: challenges and opportunities

Yisbel Marin, Tiziano Nannipieri, Claudio Oton, Fabrizio Di Pasquale

Proceedings Volume 10323, 103230D (2017) https://doi.org/10.1117/12.2272469

KEYWORDS: Fiber Bragg gratings, Sensors, Photonic integrated circuits, Multiplexing, Silicon, Demodulation, Reliability, Linear filtering, Waveguides, Gallium arsenide

Read Abstract +

Proceedings Article | 30 May 2016 Paper

Integrated FBG sensors interrogator in silicon photonic platform using active interferometer monitoring

Y. Marin, T. Nannipieri, F. Di Pasquale, C. Oton

Proceedings Volume 9916, 991626 (2016) https://doi.org/10.1117/12.2236901

KEYWORDS: Fiber Bragg gratings, Sensors, Silicon, Silicon photonics, Interferometers, Fiber optics sensors, Waveguides, High volume manufacturing, Wavefront sensors, Mach-Zehnder interferometers, Signal detection, Demodulation, Modulation, Photonic integrated circuits

Read Abstract +

Proceedings Article | 28 September 2015 Paper

A distributed acoustic and temperature sensor using a commercial off-the-shelf DFB laser

Y. Muanenda, C. Oton, S. Faralli, T. Nannipieri, A. Signorini, F. Di Pasquale

Proceedings Volume 9634, 96342C (2015) https://doi.org/10.1117/12.2205249

KEYWORDS: Temperature metrology, Raman spectroscopy, Acoustics, Fiber lasers, Sensors, Modulation, Pulsed laser operation, Temperature sensors, Commercial off the shelf technology, Ferroelectric materials

Read Abstract +

Proceedings Article | 1 July 2015 Paper

High performance distributed acoustic sensor using cyclic pulse coding in a direct detection coherent-OTDR

Yonas Muanenda, Claudio Oton, Stefano Faralli, Fabrizio Di Pasquale

Proceedings Volume 9655, 965547 (2015) https://doi.org/10.1117/12.2203103

KEYWORDS: Sensors, Acoustics, Signal to noise ratio, Modulation, Backscatter, Laser stabilization, Pulsed laser operation, Sensor performance, Fiber lasers, Receivers

Read Abstract +

Proceedings Article | 2 June 2014 Paper

Cyclic pulse coding for hybrid fast BOTDA/Raman sensor

Yonas Muanenda, Mohammad Taki, Iacopo Toccafondo, Alessandro Signorini, Tiziano Nannipieri, Claudio Oton, Fabrizio Di Pasquale

Proceedings Volume 9157, 91575L (2014) https://doi.org/10.1117/12.2057975

KEYWORDS: Temperature metrology, Sensors, Raman spectroscopy, Raman scattering, Scattering, Fiber Bragg gratings, Modulation, Single mode fibers, Fiber optics sensors, Spatial resolution

Read Abstract +

Proceedings Article | 18 May 2010 Paper

RF frequency transparent 90° hybrid based on silicon on insulator photonic circuit

Rakesh Sambaraju, Jose Vicente Galan-Conejos, Javier Herrera, Amadeu Griol, Claudio Otón, Pablo Sanchis, Alejandro Martínez

Proceedings Volume 7719, 771914 (2010) https://doi.org/10.1117/12.854531

KEYWORDS: Phase shifts, Modulation, Waveguides, Silicon, Signal attenuation, Photonic integrated circuits, Silicon photonics, Phase shift keying, Quadrature amplitude modulation, Single sideband modulation

Read Abstract +

Proceedings Article | 12 June 2007 Paper

Optical gain in dye-doped polymer waveguides using oxidized porous silicon cladding

Daniel Navarro-Urrios, Mher Ghulinyan, Paolo Bettotti, Néstor Capuj, Claudio Oton, Fernando Lahoz, Inocencio Martin, Lorenzo Pavesi

Proceedings Volume 6593, 659321 (2007) https://doi.org/10.1117/12.721400

KEYWORDS: Waveguides, Cladding, Refractive index, Silicon, Polymers, Polymethylmethacrylate, Polymer multimode waveguides, Photorefractive polymers, Dye lasers, Silica

Read Abstract +

Proceedings Article | 7 July 2005 Paper

Bloch oscillations and resonant Zener tunneling of light in optical superlattices

Mher Ghulinyan, R. Sapienza, C. Toninelli, C. Oton, P. Costantino, Z. Gaburro, Lorenzo Pavesi, D. Wiersma

Proceedings Volume 5840, (2005) https://doi.org/10.1117/12.608205

KEYWORDS: Superlattices, Geometrical optics, Charged particle optics, Analog electronics, Mirrors, Photonic crystals, Silicon, Refractive index, Scattering, Photons

Read Abstract +

Proceedings Article | 7 July 2005 Paper

Porous silicon-based notch filters and waveguides

C. Oton, E. Lorenzo, N. Capuj, F. Lahoz, I. Martin, D. Navarro-Urrios, Mher Ghulinyan, F. Sbrana, Z. Gaburro, Lorenzo Pavesi

Proceedings Volume 5840, (2005) https://doi.org/10.1117/12.608231

KEYWORDS: Silicon, Linear filtering, Refractive index, Waveguides, Cladding, Picosecond phenomena, Planar waveguides, Prisms, Optical filters, Luminescence

Read Abstract +

Proceedings Article | 29 April 2003 Paper

Chemical etching effects in porous silicon layers

Daniel Navarro-Urrios, Cecilia Perez-Padron, Eduardo Lorenzo, Néstor Capuj, Zeno Gaburro, Claudio Oton, Lorenzo Pavesi

Proceedings Volume 5118, (2003) https://doi.org/10.1117/12.499073

KEYWORDS: Picosecond phenomena, Silicon, Etching, Electrochemical etching, Reflectivity, Luminescence, Refractive index, Wet etching, Interferometry, Optical properties

Read Abstract +

Showing 5 of 14 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years