Biography

Denis Tihon received the B. Eng. and the M. Eng. degrees from Université catholique de Louvain (UCL), Louvain-la-Neuve, Belgium, in 2011 and 2013 respectively. Since 2013, he has been working as a Teaching Assistant in the Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM) at UCL, where he got his PhD degree in 2018. He is also studying the absorption of partially coherent fields in collaboration with the Cavendish Laboratory, Cambridge, U.K.


Research Interests

His domains of interests include the integral equation based methods, the absorption of partially coherent electromagnetic fields and spontaneous emission of fields from incoherent sources.


Publication

Journal

  • [DOI] D. Tihon, S. Withington, C. N. Thomas, and C. Craeye, “Characterization of power absorption response of periodic three-dimensional structures to partially coherent fields,” OpticalSocietyofAmerica.JournalA:Optics,ImageScience,andVision, vol. 33, iss. 12, pp. 2459-2469, 2016.
    [Bibtex]
    @article{boreal:178724,
     title = {Characterization of power absorption response of periodic three-dimensional structures to partially coherent fields},
     author = {Tihon, Denis and Withington, Stafford and Thomas, Christopher N. and Craeye, Christophe},
     abstract = {In many applications of absorbing structures it is important to understand their spatial response to incident fields, for example in thermal solar panels, bolometric imaging, and controlling radiative heat transfer. In practice, the illuminating field often originates from thermal sources and is only partially spatially coherent when it reaches the absorbing device. In this paper, we present a method to fully characterize the way a structure can absorb such partially coherent fields. The method is presented for any three-dimensional material and accounts for the partial coherence and partial polarization of the incident light. This characterization can be achieved numerically using simulation results or experimentally using the energy absorption interferometry that has been described previously in the literature. The absorbing structure is characterized through a set of absorbing functions onto which any partially coherent field can be projected. This set is compact for any structure of finite extent, and the absorbing function is discrete for periodic structures.},
     Keywords = {CISM:CECI},
     language = {Anglais},
     journal = {OpticalSocietyofAmerica.JournalA:Optics,ImageScience,andVision},
     volume = {33},
     number = {12},
     pages = {2459-2469},
     issn = {1520-8532},
     doi = {10.1364/JOSAA.33.002459},
     publisher = {Optical Society of America},
     year = {2016},
     url = {http://hdl.handle.net/2078.1/178724}}
  • [DOI] D. Tihon, V. Sozio, N. A. Ozdemir, M. Albani, and C. Craeye, “Numerically Stable Eigenmode Extraction in 3-D Periodic Metamaterials,” IEEE Transactions on Antennas and Propagation, vol. 64, iss. 7, pp. 3068-3079, 2016.
    [Bibtex]
    @article{boreal:178744,
     title = {Numerically Stable Eigenmode Extraction in 3-D Periodic Metamaterials},
     author = {Tihon, Denis and Sozio, Valentina and Ozdemir, Nilufer Aslihan and Albani, Matteo and Craeye, Christophe},
     abstract = {A numerical method is presented to compute the eigenmodes supported by 3-D metamaterials using the method of moments. The method relies on interstitial equivalent currents between layers. First, a parabolic formulation is presented. Then, we present an iterative technique that can be used to linearize the problem. In this way, all the eigenmodes characterized by their transmission coefficients and equivalent interstitial currents can be found using a simple eigenvalue decomposition of a matrix. The accuracy that can be achieved is limited only by the quality of simulation, and we demonstrate that the error introduced when linearizing the problem decreases doubly exponentially with respect to the time devoted to the iterative process. We also draw a mathematical link and distinguish the proposed method from other transfer-matrix-based methods available in the literature.},
     language = {Anglais},
     journal = {IEEE Transactions on Antennas and Propagation},
     volume = {64},
     number = {7},
     pages = {3068-3079},
     issn = {1558-2221},
     doi = {10.1109/TAP.2016.2562659},
     publisher = {I E E E},
     year = {2016},
     url = {http://hdl.handle.net/2078.1/178744}}

Conference

  • [DOI] D. Tihon and C. Craeye, “Closed-form evaluation of the singular terms in electric field integral equations,” in 2017 11th European Conference on Antennas and Propagation (EUCAP), 2017.
    [Bibtex]
    @inproceedings{boreal:195100,
     title = {Closed-form evaluation of the singular terms in electric field integral equations},
     author = {Tihon, Denis and Craeye, Christophe},
     Keywords = {Method of Moments},
     language = {Anglais},
     booktitle = {2017 11th European Conference on Antennas and Propagation (EUCAP)},
     doi = {10.23919/eucap.2017.7928853},
     publisher = {IEEE},
     year = {2017},
     url = {http://hdl.handle.net/2078.1/195100}}
  • [DOI] D. Tihon, S. Withington, C. N. Thomas, and C. Craeye, “Computation of the absorption of partially coherent fields using traditional coherent solvers,” in NEMO 2017, 2017.
    [Bibtex]
    @inproceedings{boreal:195101,
     title = {Computation of the absorption of partially coherent fields using traditional coherent solvers},
     author = {Tihon, Denis and Withington, Stafford and Thomas, Christopher N. and Craeye, Christophe},
     language = {Anglais},
     booktitle = {NEMO 2017},
     doi = {10.1109/nemo.2017.7964276},
     publisher = {IEEE},
     year = {2017},
     url = {http://hdl.handle.net/2078.1/195101}}
  • [DOI] D. Tihon and C. Craeye, “Fast computation of the impedance matrix for the periodic Method of Moments using a plane wave decomposition.” 2016, pp. 1-4.
    [Bibtex]
    @inproceedings{boreal:178722,
     title = {Fast computation of the impedance matrix for the periodic Method of Moments using a plane wave decomposition},
     author = {Tihon, Denis and Craeye, Christophe},
     abstract = {Full-wave simulations of 2D periodic arrays using the Method of Moments (MoM) are investigated. A method based on plane wave decomposition is used to fill the MoM impedance matrix. For pair of basis and testing functions that are close to each other, a singular term is removed before extrapolating the value of the impedance matrix using a Taylor expansion. The two main advantages of this method are the easy computation of the derivative of the impedance matrix involved in the Taylor expansion and the fact that the singularity extraction can be performed once for all phase shifts between consecutive unit cells. The latter property proves to be useful when the Array Scanning Method (ASM) is to be used.},
     language = {Anglais},
     journal = {Antennas and propagation (EuCAP), 2016 10th European Conference on},
     volume = {1},
     number = {1},
     pages = {1-4},
     issn = {0000-0000},
     doi = {10.1109/EuCAP.2016.7481735},
     year = {2016},
     url = {http://hdl.handle.net/2078.1/178722}}
  • [DOI] D. Tihon and C. Craeye, “Full-wave simulation of semi-infinite periodic metamaterials.” 2016, pp. 355-357.
    [Bibtex]
    @inproceedings{boreal:178723,
     title = {Full-wave simulation of semi-infinite periodic metamaterials},
     author = {Tihon, Denis and Craeye, Christophe},
     abstract = {The full-wave simulation of semi-infinite metamaterials is a key tool to the understanding of surface-bounded wave phenomena. In this paper, we present a method that can be used to model a semi-infinite metamaterial using full-wave simulations based on the Method of Moments. First, the impedance matrices describing one layer of the metamaterial are transformed in order to obtain the response of a semi-infinite metamaterial. Then, the fields within the first layers of the structure are computed recursively. The whole process is numerically stable. Numerical results are provided as an illustration.},
     language = {Anglais},
     journal = {Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2016 10th International Congress on},
     volume = {1},
     number = {1},
     pages = {355-357},
     issn = {0000-0000},
     doi = {10.1109/MetaMaterials.2016.7746397},
     year = {2016},
     url = {http://hdl.handle.net/2078.1/178723}}
  • D. Tihon, V. Sozio, M. Albani, and C. Craeye, “Efficient numerical analysis of 3D periodic metamaterials: multilayer approach and eigenmode analysis,” in Proceedings of the 9th European Conference on Antennas and Propagation – EUCAP 2015, 2015.
    [Bibtex]
    @inproceedings{boreal:162810,
     title = {Efficient numerical analysis of 3D periodic metamaterials: multilayer approach and eigenmode analysis},
     author = {Tihon, Denis and Sozio, V. and Albani, M. and Craeye, Christophe},
     Keywords = {ICTEAM/ELEN},
     language = {Anglais},
     booktitle = {Proceedings of the 9th European Conference on Antennas and Propagation - EUCAP 2015},
     publisher = {IEEE},
     year = {2015},
     url = {http://hdl.handle.net/2078.1/162810}}
  • [DOI] D. Tihon, C. Craeye, C. Guclu, F. Capolino, and S. Withington, “Orthogonality properties of eigenmodes inside z-invariant periodic structures.” 2015, pp. 505-507.
    [Bibtex]
    @inproceedings{boreal:178721,
     title = {Orthogonality properties of eigenmodes inside z-invariant periodic structures},
     author = {Tihon, Denis and Craeye, Christophe and Guclu, C. and Capolino, F. and Withington, S.},
     abstract = {The orthogonality properties of the eigenmodes inside 2D periodic structure such as the wire medium are investigated. We propose a scalar product for which eigenmodes are orthogonal if the material has no losses. Its application as accuracy check is suggested.},
     language = {Anglais},
     journal = {Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2015 9th International Congress on},
     volume = {1},
     number = {1},
     pages = {505-507},
     issn = {0000-0000},
     doi = {10.1109/MetaMaterials.2015.7342503},
     year = {2015},
     url = {http://hdl.handle.net/2078.1/178721}}
  • [DOI] D. Tihon, N. A. Ozdemir, and C. Craeye, “Krylov subspace-based and MBF-based analysis of large finite arrays of silver nanorods in the presence of a scatterer,” in Proceedings of the Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications – NEMO 2014, 2014.
    [Bibtex]
    @inproceedings{boreal:162828,
     title = {Krylov subspace-based and MBF-based analysis of large finite arrays of silver nanorods in the presence of a scatterer},
     author = {Tihon, Denis and Ozdemir, Nilufer Aslihan and Craeye, Christophe},
     abstract = {Metamaterials receive increasing attention at optical frequencies due to their potential for subwavelength imaging. Among the possible structures are dense, doubly periodic arrays of silver nanorods where image transmission is achieved via surface plasmon polaritons. However, the numerical simulation of such dense structures may require excessive computational resources without employing an efficient numerical approach. In this paper, the multiple-scattering based Macro Basis Function (MBF) method is applied to the shielded-block preconditioned matrix, which represents interactions between different elements of the array (subdomains). The “rule of thumb” that relates the number of MBFs generated on a subdomain to the number of iterations required by the Full Orthogonalization Method (FOM) for the same error level is investigated. For high levels of error, the number of MBFs are observed to be smaller than the number of iterations required. Conversely, for low levels of error, the FOM converges faster.},
     Keywords = {ICTEAM/ELEN , WAVE},
     language = {Anglais},
     booktitle = {Proceedings of the Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications - NEMO 2014},
     doi = {10.1109/NEMO.2014.6995708},
     publisher = {IEEE},
     year = {2014},
     url = {http://hdl.handle.net/2078.1/162828}}
  • [DOI] D. Tihon, S. Hubert, C. Craeye, and N. A. Ozdemir, “SVD post-compression combined with shielded-block preconditioner.” 2014.
    [Bibtex]
    @inproceedings{boreal:162296,
     title = {SVD post-compression combined with shielded-block preconditioner},
     author = {Tihon, Denis and Hubert, Simon and Craeye, Christophe and Ozdemir, Nilufer Aslihan},
     abstract = {In this paper, we present a post- compression method based on the Singular Value Decomposition that can be used to retrieve the low- rank representation of the Method of Moments in- teraction matrix after using the shielded-block pre- conditioner. Compression ratios of more than 17 has be achieved without significant loss of accuracy and can be further increased at the expense of the precision. The time needed to compress the pre- conditioned matrix is negligible with respect to the preconditioning time.},
     language = {Anglais},
     doi = {10.1109/ICEAA.2014.6903907},
     year = {2014},
     url = {http://hdl.handle.net/2078.1/162296}}
  • [DOI] D. Tihon, N. A. Ozdemir, and C. Craeye, “Near-field imaging with metamaterial: deconvolution of an image using SVD,” in Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2013 International Congress on, 2013.
    [Bibtex]
    @inproceedings{boreal:162850,
     title = {Near-field imaging with metamaterial: deconvolution of an image using SVD},
     author = {Tihon, Denis and Ozdemir, Nilufer Aslihan and Craeye, Christophe},
     abstract = {A deconvolution procedure based on the Array Scanning Method and the Singular Value Decomposition is presented to capture a source distribution from an image affected by white noise. The image is obtained using a collimating metamaterial made of infinite, doubly periodic array of silver nanorods with the help of the Array Scanning Method. The numerical results show that the source distribution can be captured from the image by tuning the threshold in SVD used for inversion, hence by selecting a proper source subspace.},
     language = {Anglais},
     booktitle = {Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2013 International Congress on},
     doi = {10.1109/MetaMaterials.2013.6809082},
     year = {2013},
     url = {http://hdl.handle.net/2078.1/162850}}

Contact

Email : denis.tihon@uclouvain.be

Phone : +32 10 47 23 10