B. Wild

Publications (25)4.36 Total impact

• Article: Planar photonic crystals infiltrated with liquid crystals: optical characterization of molecule orientation.

  R Ferrini, J Martz, L Zuppiroli, B Wild, V Zabelin, L A Dunbar, R Houdré, M Mulot, S Anand
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  ABSTRACT: Nematic liquid crystals are infiltrated into InP-based planar photonic crystals. Optical measurements as a function of temperature and polarization are used to study the average director field configuration in the nanometer-size holes: a planar equilibrium state is found.
  Optics Letters 06/2006; 31(9):1238-40. · 3.40 Impact Factor
• Article: Optics & Photonics 2005

  J. Martz, B. Wild, R. Ferrini, L. A. Dunbar, M. Mulot, S. Anand, R. Houdre, L. Zuppiroli
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  ABSTRACT: Recently there has been a growing amount of attention devoted to tuneable photonic crystals (PhCs) where the optical response of PhC structures can be dynamically modified. We will show how infiltrating planar PhCs with a synthetic organic material allows the trimming and tuning of their optical properties. The potential of PhC infiltration will be demonstrated for InP-based planar PhCs consisting of a hexagonal array of air holes (hole diameter = 200 − 400 nm; air filling factor = 0.40-0.50) etched through a planar waveguide in which light emitters (i.e. quantum wells) were embedded to enable optical measurements. The PhC pores were infiltrated with LC-K15 (5CB) nematic liquid crystals (LCs) in a specifically designed vacuum chamber, thereby changing the refractive index contrast between the holes and the semiconductor (trimming ). Moreover, the possibility of tuning the optical response of PhCs by an external perturbation (i.e. temperature) was demonstrated. The change of the PhC optical properties due to infiltration and temperature tuning was studied both experimentally and theoretically. Experimental measurements were compared to theoretical calculations in order to obtain information on the in-filling efficiency, the LC refractive index, and the molecule orientation inside the holes. In the first case, optical measurements were performed as a function of temperature, whilst the average LC director configuration was determined by comparing transmission spectra in the transverse electric and magnetic polarization directions.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
  08/2005;
• Conference Proceeding: Fabrication and characterization of low loss photonic crystal waveguides based on InP substrate

  G.-H. Duan, C. Cuisin, E. Derouin, O. Drisse, L. Legouezigou, O. Legouezigou, F. Pommereau, Y. Gottesman, E.V.K. Rao, B. Wild, R. Houdre
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  ABSTRACT: Photonic crystal waveguides, fabricated on InP substrate using an inductively coupled plasma etching process, show propagation losses of 40dB/mm with one missing row and of less than 10 dB/mm with three missing rows.
  Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC; 04/2005
• Article: Optical characterisation of 2D InP-based photonic crystals fabricated by inductively coupled plasma etching

  R. Ferrini, B. Lombardet, B. Wild, R. Houdre, S. Olivier, H. Benisty, A. Djoudi, L. Legouezigou, S. Hubert, S. Sainson, J.-P. Chandouineau, S. Fabre, F. Pommereau, G.-H. Duan
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  ABSTRACT: Two-dimensional photonic crystals (PCs) were fabricated in InP/GaInAsP waveguides by e-beam lithography and inductively coupled plasma etching. Transmission measurements through simple PC slabs, one-dimensional Fabry-Perot cavities and PC-based waveguides are reported showing clear improvements of the PC optical properties with respect to the results obtained by other etch methods
  Electronics Letters 09/2002; · 0.96 Impact Factor
• Article: Tuning the optical properties of planar photonic crystals by liquid crystal infiltration

  J. Martz, B. Wild, R. Ferrini, L. A. Dunbar, M. Mulot, S. Anand, R. Houdré, L. Zuppiroli
  [show abstract] [hide abstract]
  ABSTRACT: Recently there has been a growing amount of attention devoted to tuneable photonic crystals (PhCs) where the optical response of PhC structures can be dynamically modified. We will show how infiltrating planar PhCs with a synthetic organic material allows the trimming and tuning of their optical properties. The potential of PhC infiltration will be demonstrated for InP-based planar PhCs consisting of a hexagonal array of air holes (hole diameter = 200 - 400 nm; air filling factor = 0.40-0.50) etched through a planar waveguide in which light emitters (i.e. quantum wells) were embedded to enable optical measurements. The PhC pores were infiltrated with LC-K15 (5CB) nematic liquid crystals (LCs) in a specifically designed vacuum chamber, thereby changing the refractive index contrast between the holes and the semiconductor (trimming). Moreover, the possibility of tuning the optical response of PhCs by an external perturbation (i.e. temperature) was demonstrated. The change of the PhC optical properties due to infiltration and temperature tuning was studied both experimentally and theoretically. Experimental measurements were compared to theoretical calculations in order to obtain information on the in-filling efficiency, the LC refractive index, and the molecule orientation inside the holes. In the first case, optical measurements were performed as a function of temperature, whilst the average LC director configuration was determined by comparing transmission spectra in the transverse electric and magnetic polarization directions
• Article: Opical characterisation of 2D InP-based photonic crystals fabricated by inductively coupled plasma etching

  R. Ferrini, B. Lombardet, B. Wild, R. Houdré, S. Olivier, H. Benisty, A. Djoudi, L. Legouézigou, S. Hubert, S. Sainton, J.P. Chandouineau, S. Fabre, F. Pommereau, G.-H. Duan
• Article: Out-of-plane losses in bi-dimensional photonic crystals: analytical model and optical measurements

  R. Ferrini, B. Wild, B. Lombardet, D. Leuenberger, R. Houdré, H. Benisty
• Article: Hole depth- and shape-induced radiation losses in two- dimensional photonic crystals

  R. Ferrini, B. Lombardet, B. Wild, R. Houdré, G.-H. Duan
• Article: Planar photonic crystals: a new material for integrated photonic devices

  R. Houdré, R. Ferrini, L. A. Dunbar, D. Leuenberger, B. Lombardet, B. Wild, M. Ilegems
• Article: Fabrication of two-dimensional InP-based photonic crystals by chlorine based chemically assisted ion beam etching

  M. Mulot, S. Anand, R. Ferrini, B. Wild, R. Houdré, J. Moosburger, A. Forchel
• Article: Planar photonic crystals: a new material for integrated photonic devices

  L. A. Dunbar, D. Leuenberger, B. Lombardet, B. Wild, R. Ferrini, R. Houdré, M. Ilegems
• Article: Low-loss photonic-crystal and monolithic InP integration: bands, bends, lasers, filters

  H. Benisty, C. Weisbuch, S. Olivier, R. Houdré, R. Ferrini, D. Leuenberger, B. Wild, B. Lombardet, M. Qiu, S. Anand, [......], C. Cuisin, J.P. Chandouineau, O. Drisse, F. Gaborit, L. Legouézigou, O. Legouézigou, F. Lelarge, F. Poingt, F. Pommereau, B. Thedrez
• Article: Infiltration of planar photonic crystals with liquid crystals

  J. Martz, L. Zuppiroli, F. Nüesch, B. Wild, B. Lombardet, L. A. Dunbar, R. Ferrini, R. Houdré, M. Ilegems
• Article: Temperature tuning of the optical properties of planar photonic crystal microcavities

  B. Wild, R. Ferrini, R. Houdré, M. Mulot, S. Anand, C.J.M. Smith
• Article: Temperature tuning of optical properties of planar photonic crystal microcavities

  B. Wild, R. Ferrini, R. Houdré
• Article: Tuning the optical properties of planar photonic crystals by liquid crystal infiltration

  J. Martz, R. Ferrini, L. Zuppiroli, B. Wild, L. A. Dunbar, R. Houdré, F. Robin, S. Anand
• Article: Tuneable planar photonic crystals

  R. Ferrini, P. El-Kallassi, L. Zuppiroli, B. Wild, L. A. Dunbar, R. Houdré
• Article: Tuneable planar photonic crystal devices

  R. Ferrini, J. Martz, B. Wild, L. A. Dunbar, F. Robin, S. Anand, R. Houdré, L. Zuppiroli
• Article: Optical characterization of tunable planar photonic crystals

  R. Ferrini, J. Martz, L. Zuppiroli, B. Wild, L. A. Dunbar, R. Houdré, F. Robin, S. Anand
• Article: Low loss two dimensional InP-based photonic crystal waveguides

  B. Wild, L. A. Dunbar, R. Houdré, G.-H. Duan, C. Cuisin, E. Derouin, O. Drisse, L. Legouézigou, O. Legouézigou, F. Pommereau