Searched for: subject%3A%22Silicon%255C+photonics%22
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document
Yu, Kunlei (author)
This thesis addresses the design and optimization of sparse non-uniform optical phased arrays (OPAs) for advanced automotive LiDAR systems. As autonomous driving technologies advance, the demand for high-resolution, reliable, and compact LiDAR systems has become increasingly critical. Traditional uniform OPAs, while effective, face limitations...
master thesis 2024
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Scheepstra, Jasper (author)
In a world increasingly dominated by technological advancements, the demand for high-quality microphones has never been more present. Seamless speech recognition and the development of userfriendly hearing aids remain significant challenges. State-of-the-art micro-electromechanical system (MEMS) microphones are reaching their bottlenecks in...
master thesis 2023
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Chang, Li Fu (author), Norte, R.A. (author), Westerveld, W.J. (author), Tseng, Shuo Yen (author)
Efficient coupling of light from an optical fiber to silicon waveguides is a challenging task in integrated photonics. Couplers based on adiabatic mode evolution have the advantages of high bandwidth and low loss but are often accompanied by longer device lengths. In this paper, we introduce the concept of adiabaticity map and optimize the...
conference paper 2023
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González-Andrade, David (author), Le Roux, Xavier (author), Aubin, Guy (author), Amar, Farah (author), Nguyen, Thi Hao Nhi (author), Nuño Ruano, Paula (author), Dinh, Thi Thuy Duong (author), Oser, D.J.H. (author), Pérez-Galacho, Diego (author)
On-chip spatial and polarization multiplexing has emerged as a powerful strategy to boost the data transmission capacity of integrated optical transceivers. State-of-the-art multiplexers require accurate control of the relative phase or the spatial distribution among different guided optical modes, seriously compromising the optical...
journal article 2023
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González-Andrade, D. (author), de Cabo, R. Fernández (author), Vilas, J. (author), Dinh, T. T.D. (author), Luque-González, J. M. (author), Oser, D.J.H. (author), Aubin, G. (author), Amar, F. (author), Dias, A. (author)
Integration of photonic circuits on silicon offers a unique opportunity to address the scaling of inter- and intra-chip communications in an energy-efficient and cost-effective manner. Mode-division multiplexing (MDM) is deemed as one of the most promising technologies to increase aggregated data bandwidth and avoid a communication capacity...
conference paper 2023
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Pieters, Cedric (author), Westerveld, W.J. (author), Mahmud-Ul-Hasan, Hasan (author), Severi, Simone (author), Kjellman, Jon (author), Jansen, Roelof (author), Rochus, Veronique (author), Rottenberg, Xavier (author)
Photoacoustic tomography defines new challenges for ultrasound detection compared to ultrasonography. To address these challenges, a sensitive, small, scalable, and broadband optomechanical ultrasound sensor (OMUS) has been developed. The OMUS is an on-chip optical ultrasound sensor, using optical interferometric ultrasound detection. It...
conference paper 2022
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Westerveld, W.J. (author)
We demonstrated that photonic micro-ring resonators can be used in micro-machined ultrasound microphones. This might cause a breakthrough in array transducers for ultrasonography; first because optical multiplexing allows array interrogation via one optical fiber and second because the silicon-on-insulator technology allows cost-effective...
doctoral thesis 2014
document
Margallo Balbás, E. (author)
The potential of light in diagnosis and therapy has been long recognised. With the advent of scientific progress in our understanding of light propagation and interaction with tissue and parallel major technological advances in how optical energy can be generated, detected and processed, this potential is being realised. Linking with this trend,...
doctoral thesis 2010
Searched for: subject%3A%22Silicon%255C+photonics%22
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