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Xu, M. (author), den Hartog, T. (author), Cheng, L.K. (author), Wolfs, M. (author), Habets, A.D.M.R. (author), Rohlfs, J.M. (author), van den Ham, E.J. (author), Meulendijks, N.M.M. (author), Sastre Calabulg, F. (author), Buskens, P.J.P. (author)Distinguishing between photothermal and non-thermal contributions is essential in plasmon catalysis. Use of a tailored optical temperature sensor based on fiber Bragg gratings enabled us to obtain an accurate temperature map of an illuminated plasmonic catalyst bed with high spatiotemporal resolution. Its importance for quantification of the...article 2022
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Donnot, A. (author), Edmunds, J. (author), Hammond, N. (author), Welch, M. (author), Kean, P. (author), Kehayas, E. (author), Hagen, R.A.J. (author), Yadav, S. (author), Medenblik, H.J.W. (author), Cheng, L.K. (author), Bulgarini, G. (author), Dresscher, M. (author)The High Photon Efficiency (HPE) standard is a promising approach for, low Size, Weight and Power (SWaP) optical terminal for space communications. In this paper, we report the creation of a breadboard demonstrator CCSDS compliant HPE source, capable of a Pulse Position Modulation (PPM) order of 256 with an average power of 4W and kW level peak...conference paper 2022
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Rossi, L. (author), Cheng, L.K. (author), De Jong, W. (author), Jansen, R. (author), Bolognini, G. (author)A low-noise φ-OTDR sensor is implemented as a distributed acoustic sensing system for monitoring a survey well in Cottessen. The characterization shows strain noise levels below 1 nϵ for a 10 kHz sampling rate.conference paper 2022
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McKenzie, I. (author), Ibrahim, S. (author), Haddad, E. (author), Abad, S. (author), Hurni, A. (author), Cheng, L.K. (author)For over two decades the European Space Agency has investigated the possibility of using fiber optic sensors in spacecraft engineering as tools to advance the monitoring and control of spacecraft. The applications have been diverse covering both launcher and satellite applications and encompassing environments from cryogenic to high temperature...article 2021
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Test results of lateral load insensitive FBGs embedded in composites to suppress spectral distortionCheng, 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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Tchebotareva, A. (author), Hermans, S.L.N. (author), Humphreys, P.C. (author), Voigt, D. (author), Harmsma, P.J. (author), Cheng, L.K. (author), Verlaan, A.L. (author), Dijkhuizen, N. (author), de Jong, W. (author), Dréau, A. (author), Hanson, R. (author)We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm photon....article 2019
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Cheng, L.K. (author), Hagen, R.A.J. (author), van Megan, D. (author), Molkenboer, F.T. (author), Jansen, T.H. (author)Fiber Bragg Grating (FBG) sensor is widely used for Structural Health Monitoring (SHM) purpose. For dedicated health monitoring of critical composite parts in aircrafts, maritime constructions, wind turbine blades, etc., high speed measurement can provide vital information to assess impact damage. For example, low-energy droplet impact to wind...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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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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- Faber, A.J. (author), Cheng, L.K. (author), Gielesen, W.L.M. (author), Boussard-Plédel, C. (author), Maurugeon, S. (author), Bureau, B. (author), Zhang, X.H. (author), Lucas, J. (author), Pereira Do Carmo, J. (author) conference paper 2017
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Cheng, L.K. (author), Hagen, R.A.J. (author), Schriek, L.N. (author), Toet, P.M. (author), van der Togt, O.E. (author)The presented interferometer concept enables high-accuracy target displacement measurement in difficult accessible locations and the development of small fiber optic sensor to measure other physical parameters e.g. pressure, vibration, gravity force, etc.. Furthermore, this configuration is basically insensitive to disturbances to the lead fiber...conference paper 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
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Faber, A.J. (author), Cheng, L.K. (author), Gielesen, W.L.M. (author), Boussard-Plédel, C. (author), Houizot, P. (author), Danto, S. (author), Lucas, J. (author), Pereira Do Carmo, J. (author)The development of single mode chalcogenide glass fibers as wavefront filter for the DARWIN mission is reported. Melting procedures and different preform techniques for manufacturing core-cladding chalcogenide fibers are described. Bulk glass samples on the basis of Te-As-Se- and high Te-compositions have been characterized optically, by...conference paper 2017
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Nieuwland, R.A. (author), Cheng, L.K. (author), Lemmen, M.H.J. (author), Oostenbrink, R.H. (author), Harmsma, P.J. (author), Schreuder, J.J. (author)An overview of a fiber Bragg based sensor system, developed for in-vivo vascular pressure and temperature sensing, is presented. The focus is on sensor miniaturization and interrogator optimization to reach a viable sensor system.conference paper 2014
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Chakkalakkal Abdulla, S.M. (author), Cheng, L.K. (author), van den Bosch, B. (author), Dijkhuizen, N. (author), Nieuwland, R.A. (author), Gielesen, W.L.M. (author), Lucas, J. (author), Boussard-Plédel, C. (author), Conseil, C. (author), Bureau, B. (author), do Carmo, J.P. (author)The DARWIN mission aims to detect weak infra-red emission lines from distant orbiting earth-like planets using nulling interferometry. This requires filtering of wavefront errors using single mode waveguides operating at a wavelength range of 6.5-20 μm. This article describes the optical design of the fibers, the manufacturing protocol, the...conference paper 2014
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- 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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Cheng, L.K. (author), Boering, M. (author), Braal, F.M. (author)Fiber optic data transmission already has led to revolutionary developments, and ongoing research in fiber optic sensing technology for applications in extreme operational conditions will boost the development of fiber optic multipleparameter sensing systems further. Such innovations will be of particular benefit to the oil and gas industry in...article 2014
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Cheng, L.K. (author), Toet, P.M. (author), de Vreugd, J. (author), Nieuwland, R.A. (author), Tseb, M.L.V. (author), Tamb, H. (author)During the last decades, the use of optical fiber for sensing applications has gained increasing acceptance because of its unique properties of being intrinsically safe, unsusceptible to EMI, potentially lightweight and having a large operational temperature range. Among the different Fiber Optic sensor types, Fiber Bragg Grating (FBG) is most...conference paper 2014
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Cheng, L.K. (author), Nieuwland, R.A. (author), Toet, P.M. (author), Vincent Tse, M.-L. (author), Tam, H. (author)Applying an inhomogeneous lateral load to an FBG will result in distortion of the reflection spectrum due to the Poisson effect. A solution based on a special fiber is proposed and first results are shown.conference paper 2013