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Baghini, M.S. (author), Broekens, K.A. (author), Oderwald, M.P. (author), Breedveld, P. (author), Heidari, H. (author), van der Heiden, M.S. (author)
Magnetostrictive strain sensors with high spinorbit coupling have been integrated with Fiber-Bragg-Grating sensors wherein the gap within the gratings varies with strain within the encapsulating magnetostrictive material. Terfenol-D has been chosen as the mm sized magnetostrictive material which exhibits the largest known bulk magnetostriction....
conference paper 2023
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Silvestri, F. (author), Feenstra, L.W. (author), Pettazzi, F. (author), Nijenhuis, J.R. (author), de Vreugd, J. (author), de Bruijn, D. (author), den Breeje, R. (author), Klop, W.A. (author), Ferrario, I. (author)
High throughput optical satellite communication (SATCOM) systems need to rely on effective and robust technology to enable wavelength-division multiplexing (WDM) in a commercially viable way. The main challenge to implement WDM in optical feeder links deals with the multiplexing of high power channels. Currently the levels of power required for...
conference paper 2022
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Silvestri, F. (author), Pettazzi, F. (author), Eschen, M. (author), Boschma, J.J. (author), Lutgerink, J.B. (author), Kramer, G.F.IJ. (author), Korevaar, W.C. (author), den Breeje, R. (author), Duque, C.M. (author), Doelman, N.J. (author)
Optical satellite communication is growing fast and among various applications it requires higher throughput optical feeder links. Optical feeder links for satellite communication necessitate very high data throughput, up to 1 Terabit/s and beyond. Amongst several multiplexing strategies, dense wavelength division holds a key position to enable...
conference paper 2020
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Huang, J. (author), Cao, Z. (author), Zhao, X. (author), Zhang, X. (author), Liu, Y. (author), Xiang, Y. (author), Gerini, G. (author), Koonen, A.M.J. (author)
In this article, a novel electrically controlled optical broadband phase shifter (ECO-BPS) is proposed and experimentally investigated for broadband microwave orbital angular momentum (OAM) mode generation. Based on the proposed ECO-BPS and a 17-element circular antenna array, the effect of the phase error on the OAM mode quality is studied by...
article 2020
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Cheng, L.K. (author), Hagen, R.A.J. (author), Vosteen, L.L.A. (author), Atli-Veltin, B. (author), Toet, P. (author), Molkenboer, F.T. (author), van Kempen, F.C.M. (author), van der Togt, O.E. (author), Jedynska, A.D. (author), Jansen, T.H. (author)
Composite constructions are indispensable in current and future society. Fiber Bragg Gratings (FBGs) embedded in composite need to be carefully aligned with the material fibers to reduce inhomogeneous lateral load exerted onto the FBG which occurs due to the inhomogeneous nature of composite materials. Inhomogeneous load causes distortion of the...
conference paper 2019
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Jansen, R. (author), Day, J.P.R. (author), Vink, H.J.P. (author), de Vreugd, J. (author), van Beekum, E.R.J. (author), van der Laan, L.W. (author), van 't Hof, A.C.A. (author), Gielesen, W.L.M. (author), Koehler, J. (author)
Sentinel-5 is an Earth atmospheric monitoring mission developed within the Copernicus program. The mission objective is to monitor the composition of the Earth's atmosphere on a daily basis. TNO is developing the UV1 spectrometer subsystem as well as the two telescope subsystems. In this paper, the design of the UV1 spectrometer is described and...
conference paper 2019
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Burkhardt, M. (author), Rathje, T. (author), Lehr, D. (author), Erdmann, L. (author), Helgert, M. (author), Triebel, P. (author), Diehl, T. (author), Gatto, A. (author), van der Valk, N.C.H. (author), Vink, H.J.P. (author), Jansen, R. (author), Day, J.P.R. (author), Gielesen, W.L.M. (author)
The first diffraction gratings on curved substrates were manufactured by employing ruling engines by H.A. Rowland. Due to the ruling principle, these gratings are characterized by equidistant parallel lines if the line pattern is projected along the optical axis onto a tangential plane in the vertex of the grating substrate. The Offner...
conference paper 2019
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van Groenestijn, G.J.A. (author), Jansen, T.H. (author), van Neer, P.L.M.J. (author), Jacobs, M.J. (author), Cheng, L.K. (author)
Elastic guided waves are carriers of information of the (change in) condition of plate-like structures like windturbine blades, airplane wings and road surfaces on bridges. To measure these guided waves we do not have to use piezos. Other sensors offer interesting benefits like contactless sensing, embedding, or measuring without electricity....
conference paper 2018
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Cheng, L.K. (author), Toet, P.M. (author)
Measurement of physical parameters using mechanical transducers is an important part of fiber optical sensing. Fiber Bragg grating (FBG)-based sensors with dedicated transducers can be designed to measure different physical parameters and can operate in extremely harsh environments. This makes the FBG sensor very suitable for special...
bookPart 2018
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Lesundak, A. (author), Voigt, D. (author), Cip, O. (author), van den Berg, S. (author)
Homodyne interferometry with a frequency comb as multi-wavelength source is a powerful method to measure long distances with high accuracy. The measurement principle requires that individual comb modes are spectrally resolved, making hundreds or thousands of accurately known wavelengths available for interferometry. For this reason the method...
article 2017
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Liu, Z. (author), Htein, L. (author), Cheng, L.K. (author), Martina, Q. (author), Jansen, R. (author), Tam, H.Y. (author)
In this paper, we present a miniature fluidic flow sensor based on a short fiber Bragg grating inscribed in a single mode fiber and heated by Co2+-doped multimode fibers. The proposed flow sensor was employed to measure the flow rates of oil and water, showing good sensitivity of 0.339 nm/(m/s) and 0.578 nm/(m/s) for water and oil, flowing at v ...
article 2017
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Cotel, A. (author), Liard, A. (author), Desserouer, F. (author), Pichon, P. (author), van der Valk, N.C.J. (author)
Optical components such as diffraction gratings are widely used in Space-flight satellites to analyse light properties from soft-X rays to Infra-Red. The diffraction gratings are one of the key optical components of space-flight instruments and have to exhibit very high optical performances. TROPOMI (Tropospheric Monitoring Instrument) is a...
conference paper 2017
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Synnes, S.A.V. (author), Hunter, A.J. (author), Hansen, R.E. (author), Sabo, T.O. (author), Callow, H.J. (author), van Vossen, R. (author), Austeng, A. (author)
Wideband and widebeam synthetic aperture sonar (SAS) can provide information on the frequency- and aspect dependent scattering in a scene. We suggest an approach to predict the quality of the sensor data over the available frequencies and aspect angles. We relate the typical spatial domain quality metrics to their wave number domain (WD)...
article 2017
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Liu, Z. (author), Htein, L. (author), Cheng, L.K. (author), Martina, Q.E.V.N. (author), Jansen, T.H. (author), Tam, H.Y. (author)
In this paper, we present a miniature fluidic flowmeter based on a packaged FBG and laser-heated fibers. The flow rates of water and hydraulic oil were measured by utilizing the proposed flowmeter. The measured results exhibited good sensitivity of 0.339 nm/(m/s) for water and 0.578 nm/(m/s) for oil flow. Experimental results showed that the...
conference paper 2017
document
Snelders, D.J.M. (author), Valega Mackenzie, F.O. (author), Boersma, A. (author), Peeters, R.H.M. (author)
Important progress has been made towards the expanding of the limits of applicability of Fiber Bragg Grating (FBG) optical sensors. The development of new inorganic coatings consisting of MFI zeolite crystals (silicalite and ZSM-5) has opened up the possibility towards the use of this technology at high temperatures and pressures. Using two...
article 2016
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Boersma, A. (author), Cremers, R. (author), Jansen, R. (author)
The functionalization of optical fibers containing Fiber Bragg Gratings is a very interesting approach in the development of distributed chemical sensors. We have shown a large variety of coatings, ranging from polymers to ceramics as responsive layers for the detection of many chemical species. Some coated fibers can be applied in extreme...
conference paper 2016
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Vink, H.J.P. (author), Day, J.P.R. (author), Volatier, J.B.C.G. (author), Nijkerk, M.D. (author)
The fact that every spectrometer can sort light by wavelength at the speed of light is intriguing. The field of spectrometry is a long-existing and ever-changing one. The application areas extend from optical communication to possible extraterrestrial life detection, health monitoring, environmental monitoring and quite a long list of other...
conference paper 2015
document
Maresi, L. (author), van der Meulen, W. (author), Vink, H.J.P. (author)
Accurate, reliable and stable long term measurements of Earth's Atmospheric Chemistry from Space are currently done by complex instruments, whose mass is in excess of 100 Kg. TROPOMI is the more recent instrument being developed jointly by ESA and NSO and due for launch in 2015. TROPOMI, consisting of four spectrometers ranging from UV to SWIR,...
conference paper 2014
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Toet, P.M. (author), Hagen, R.A.J. (author), Hakkesteegt, H.C. (author), Lugtenburg, J. (author), Maniscalco, M.P. (author)
In this paper we present a newly developed Fiber Optic measurement system, consisting of Fiber Bragg Grating (FBG) sensors and an FBG interrogator. The development of the measuring system is part of the PiezoElectric Assisted Smart Satellite Structure (PEASSS) project, which was initiated at the beginning of 2013 and is financed by the Seventh...
conference paper 2014
document
Henken, K.R. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author), Cheng, L.K. (author), van der Heiden, M.S. (author)
article 2014
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