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Dr. ir. Jan Willems 

This person is no longer working in this group.

Affiliation: Belgacom
PhD Thesis: Jan Willems, Modellering en ontwerp van geïntegreerde optische filters en lasers met een golflengte breed afstembereik, Modelling and design of integrated optical filters and lasers with a broad wavelength tuning range, 1/1995

Patents

Publications (19)

    International Journals

  1. J. Willems, J. Haes, R. Baets, The bidirectional mode expansion method for two-dimensional waveguides : the TM case, Optical and Quantum Electronics, 27, p.995-1007 (1995).
  2. J. Willems, G. Morthier, R. Baets, Integrable devices for wavelength multiplexing optical communication systems, Annales des Télécommunications, 48( 7-8), p.348-355 (1993).
  3. J. Buus, W.J. Stewart, J. Haes, J. Willems, R. Baets, Spot size expansion for laser-to-fiber coupling using an integrated multimode coupler, IEEE, Journal of Lightwave Technology, 11(4), p.582-588 (1993).
  4. J. Willems, K. David, G. Morthier, R. Baets, Investigation of a novel Bragg reflector : partly gain-coupled DBR filter, IEE Proceedings, 139(1), (1992).
  5. J. Willems, K. David, G. Morthier, R. Baets, Filter characteristics of DBR amplifier with index and gain coupling, Electronics Letters, 27(10), p.831-833 (1991).
      International Conferences

    1. J. Haes, J. Willems, R. Baets, Study of power conservation at waveguide discontinuities using the mode expansion method, 1995 Technical Digest Series Integrated Photonics Research, 7, United States, p.115-117 (1995).
    2. J. Haes, J. Willems, R. Baets, Design of adiabatic tapers for high contrast step index waveguides, SPIE Linear and Nonlinear Integrated Optics, 2212, German Federal Republic, p.685-693 (1994).
    3. H.P. Nolting, R. März, A.D. Capobianco, C. De Angelis, J. Ctyroky, G.R. Hadley, J. Haes, J. Willems, R. Baets, Results of benchmark tests for different numerical BPM algorithms, SPIE Linear and Nonlinear Integrated Optics, 2212, German Federal Republic, p.275-295 (1994).
    4. H.P. Nolting, R. März, A.D. Capobianco, C. De Angelis, J. Ctyroky, G.R. Hadley, J. Haes, J. Willems, R. Baets, Benchmark results for BPM algorithms, Integrated Photonics Research Conf.,1994 Tech. Digest Series, 3, United States, p. 2-4 (1994).
    5. J. Willems, J. Haes, R. Baets, Radiation Loss in Grating Assisted Codirectional Couplers, European Conference on Integrated Optics (ECIO'93), Switzerland, p.3/22-3/23 (1993).
    6. R. Baets, J. Willems, J. Haes, Diversity in Beam Propagation Methods, European Conference on Integrated Optics (ECIO'93), V(I), Switzerland, p.13/1-13/3 (1993).
    7. J. Willems, J. Haes, R. Baets, Eigenmode propagation analysis of radiation losses in waveguides with discontinuities and grating assisted couplers, Integrated Photonics Research, 10, United States, p.229-232 (1993).
    8. J. Haes, J. Willems, R. Baets, J. Buus, W.J. Stewart, New structure for efficiently coupling a waveguide to an optical fiber, Proceedings of OFC/IOOC'93, Technical Digest Series, 4, United States, p.118-119 (1993).
    9. J. Willems, G. Morthier, R. Baets, Novel widely tunable integrated optical filter with spectral selectivity, Proceedings of ECOC, 1, Germany, p.413-416 (1992).
    10. R. Baets, J. Willems, G. Morthier, Integrable devices for wavelength multiplexing optical communication systems, Proceedings of the 2nd International Symposium on Signals, Systems and Electronics, 1, France, p.298-303 (1992).
    11. J. Willems, G. Morthier, R. Baets, Characteristics of a codirectionally coupled laser diode and of a DFB laser with sampled grating, COST-240 workshop, Italy, (1992).
    12. J. Willems, G. Morthier, R. Baets, Analysis and design of grating-assisted codirectionally coupled laser diodes, Proceedings of the Conference on Semiconductor and Integrated Optoelectronics, United Kingdom, (1992).
    13. J. Willems, G. Morthier, R. Baets, Threshold gain of a grating-assisted codirectionally coupled twin-guide laser diode, Proceedings of the Topical Meeting on Integrated Photonics Research, United States, p.310-311 (1992).
    14. J. Willems, K. David, G. Morthier, R. Baets, Theoretical analysis of distributed bragg reflector filters with gain coupling, Semiconductor and Integrated Opto-electronics (SIOE), United Kingdom, (1991).
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