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Sensing Opportunities in Integrated Photonics (invited tutorial)

Westerveld, W.J. (author)

abstract 2022

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Digital Review: Final Project Report, Final report on the project of developing the Digital Review Application

Van den Berg, J.J.J. (author), Weijers, J. (author), Westerveld, B.B. (author)

SKION is a foundation that facilitates research of children with cancer. The research consists of investigating slides and other material gotten from the treating hospitals at SKION. The results of these investigations are saved into a database, while other information gathered by SKION through forms is stored in another database. Four times a...

bachelor thesis 2009

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Commercial SOI sensor technology

van Zeijl, E. (author), Schmits, R. (author), van den Berg, J. H. (author), Harmsma, P. J. (author), Westerveld, W.J. (author), Lagioia, M. (author), Bodis, P. (author), Ebeling, R. P. (author), Nieuwland, R. A. (author), Yang, S. (author)

We present a platform for the deployment of SOI based sensors in commercial<br/>applications. The platform is designed from a systems perspective and includes all<br/>aspects of a SOI sensor system, including sensor head itself, the communications<br/>infrastructure and a customized interrogation system.

conference paper 2010

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Sensitive optomechanical ultrasound sensor in a silicon photonic chip towards single-shot photoacoustic imaging with an ultrasound sensor matrix

Pieters, Cedric (author), Westerveld, W.J. (author), Mahmud-Ul-Hasan, Md. (author), Severi, Simone (author), Shnaiderman, Rami (author), Ntziachristos, Vasilis (author), Billen, Margo (author), Kjellman, Jon (author), Jansen, Roelof (author), Rochus, Veronique (author), Rottenberg, Xavier (author)

We propose a new opto-mechanical ultrasound sensor (OMUS) enabled by an innovative silicon photonics waveguide. We present experimental results up to 30 MHz, a 10-sensor array proof-of-concept and our latest findings.

conference paper 2021

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Application of adiabaticity map: highly efficient coupling from optical fibers to silicon waveguides by adiabatic mode evolution

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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Analysis on the Impact of Pop-Up Flight Occurrence when Extending the Arrival Management Horizon

Vanwelsenaere, A.J.G. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Westerveld, E (author)

The occurrence of pop-up flights negatively affects the (extended) arrival manager. This issue is known already for a long time by operational experts, but the extent thereof has now been assessed during experiments. An arrival manager research model was developed and integrated in BlueSky, an open-source air traffic management simulator. Fast...

conference paper 2017

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Enhancing the sensitivity of silicon photonic ultrasound sensors by optimizing the stiffness of polymer cladding

Erdoğan, R.T. (author), Filonenko, G.A. (author), Picken, S.J. (author), Steeneken, P.G. (author), Westerveld, W.J. (author)

Ultrasound is widely used in medical imaging, and photo-acoustics is an upcoming imaging modality for the diagnosis of diseases. Future applications require a large matrix of small, sensitive, and broadband ultrasound sensors. However, current high-end systems still use piezo-electric material to detect ultrasound, with limited sensitivity...

conference paper 2023

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Photoacoustic raster scan imaging using an optomechanical ultrasound sensor in silicon photonics

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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De bouw der Alpujarras en het tektonische verband der Oostelijke Betische Ketens

Westerveld, J. (author)

doctoral thesis 1929

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Silicon photonic micro-ring resonators to sense strain and ultrasound

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

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Characterization of Integrated Optical Strain Sensors Based on Silicon Waveguides

Westerveld, W.J. (author), Leinders, S.M. (author), Muilwijk, P.M. (author), Pozo, J. (author)

Microscale strain gauges are widely used in micro electro-mechanical systems (MEMS) to measure strains such as those induced by force, acceleration, pressure or sound. We propose all-optical strain sensors based on micro-ring resonators to be integrated with MEMS. We characterized the strain-induced shift of the resonances of such devices....

journal article 2013

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Demonstration of Large Coupling-Induced Phase Delay in Silicon Directional Cross-Couplers

Westerveld, W.J. (author), Pozo, J. (author), Leinders, S.M. (author), Yousefi, M. (author), Urbach, H.P. (author)

We investigate directional couplers in silicon-on-insulator photonic technology. We theoretically and experimentally demonstrate a large coupling-induced phase delay that occurs when nearly all light is coupled from one waveguide to the other, i.e., when the coupler operates as a cross-coupler. We show that even a tiny asymmetry in the two...

journal article 2013

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Optimized 3D simulation method for modeling of out-of-plane radiation in silicon photonic integrated circuits

Westerveld, W.J. (author), Urbach, H.P. (author), Yousefi, M. (author)

We present an accurate and fast 3D simulation scheme for out-of-plane grating couplers, based on two dimensional rigorous (finite difference time domain) grating simulations, the effective index method (EIM), and the Rayleigh-Sommerfeld diffraction formula. In comparison with full 3D FDTD simulations, the rms difference in electric field is...

journal article 2011

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Rural communications in India using fixed cellular radio systems

Westerveld, R. (author), Prasad, R. (author)

journal article 1994

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A sensitive optical micro-machined ultrasound sensor (OMUS) based on a silicon photonic ring resonator on an acoustical membrane

Leinders, S.M. (author), Westerveld, W.J. (author), Pozo, J. (author), Neer, P.L.M.J. (author), Snyder, B. (author), O'Brien, P. (author), Urbach, H.P. (author), de Jong, N. (author), Verweij, M.D. (author)

With the increasing use of ultrasonography, especially in medical imaging, novel fabrication techniques together with novel sensor designs are needed to meet the requirements for future applications like three-dimensional intercardiac and intravascular imaging. These applications require arrays of many small elements to selectively record the...

journal article 2015

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Characterization of a photonic strain sensor in silicon-on-insulator technology

Westerveld, W.J. (author), Pozo, J. (author), Harmsma, P.J. (author), Schmits, R. (author), Tabak, E. (author), Van den Dool, T.C. (author), Leinders, S.M. (author), Van Dongen, K.W.A. (author), Urbach, H.P. (author), Yousefi, M. (author)

Recently there has been growing interest in sensing by means of optical microring resonators in photonic integrated circuits that are fabricated in silicon-on-insulator (SOI) technology. Taillaert et al. [Proc. SPIE6619, 661914 (2007)PSISDG0277-786X10.1117/12.738412] proposed the use of a silicon-waveguide-based ring resonator as a strain gauge....

journal article 2012

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Control of thumb force using surface functional electrical stimulation and muscle load sharing

Westerveld, A.J. (author), Schouten, A.C. (author), Veltink, P.H. (author), Van der Kooij, H. (author)

Background Stroke survivors often have difficulties in manipulating objects with their affected hand. Thumb control plays an important role in object manipulation. Surface functional electrical stimulation (FES) can assist movement. We aim to control the 2D thumb force by predicting the sum of individual muscle forces, described by a sigmoidal...

journal article 2013

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Extension of Marcatili’s analytical approach for rectangular silicon optical waveguides

Westerveld, W.J. (author), Leinders, S.M. (author), Van Dongen, K.W.A. (author), Urbach, H.P. (author), Yousefi, M. (author)

Marcatili's famous approximate analytical description of light propagating through rectangular dielectric waveguides, published in 1969, gives accurate results for low-index-contrast waveguides. However, photonic integrated circuit technology has advanced to high-index-contrast (HIC) waveguides. In this paper, we improve Marcatili's model by...

journal article 2012

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Novel derivatives of 1,6,7,12-tetrachloroperylene-3,4,9,10-tetracarboxylic acid: Synthesis, electrochemical and optical properties

Dubey, R. (author), Westerveld, N. (author), Sudhölter, Ernst J. R. (author), Grozema, F.C. (author), Jager, W.F. (author)

A family of novel unsymmetrical "peri"-substituted perylene-3,4,9,10-tetracarboxylic acid derivatives (5-10), with 1,6,7,12-tetrachloro-substituents at the bay-positions, has been synthesized. Subsequently, their redox and optical properties have been explored with the intent of unveiling opto-electronic characteristics of these newly...

journal article 2016

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Substitution Effects on the Photoinduced Charge-Transfer Properties of Novel Perylene-3,4,9,10-tetracarboxylic Acid Derivatives

Inan, D. (author), Dubey, R. (author), Westerveld, N. (author), Bleeker, J.J. (author), Jager, W.F. (author), Grozema, F.C. (author)

We report here the synthesis and photophysical study of a series of electron donor–acceptor molecules, in which electron-donating 4-methoxyphenoxy groups are attached to the 1,7-bay positions of four different perylene tetracarboxylic acid derivatives, namely, perylene tetraesters 1, perylene monoimide diesters 2, perylene bisimides 3, and...

journal article 2017