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Dr Walter Belardi

email: wb1e14@soton.ac.uk
tel: +44 23 8059 3836

Senior Research Fellow

Member of groups

About Walter Belardi

Dr Walter Belardi is a senior research fellow at the Optoelectronics Research Centre (ORC), University of Southampton (United Kingdom).

He was awarded his Laurea degree in Electronics Engineering at the UniversitÓ degli Studi di Pavia (Italy) and his PhD degree in Optoelectronics at the ORC with a thesis on "Holey optical fibres for high nonlinearity devices". His principal research contributions are in the numerical design, fabrication and applications of novel optical fibre technologies. He has co-authored more than 80 scientific publications and 2 patents. His most important personal achievements range from the invention in 2000 of a double clad fabrication approach for Microstructured Optical Fibres(MOFs), the first application in 2003 of the spinning technique to MOFs,the first inclusion in 2005 of an elliptical hole within a MOF, to the most recent results on hollow core optical fibres. These include the very first numerical explanation in 2013 of the effects of the core boundary curvature in a hollow optical fibre, the very first introduction in 2013 of a radically novel design for low loss hollow core optical fibres based on a nested ring structure and a free core boundary, the first theoretical and experimental demonstration in 2014 of low bending loss in very large core hollow antiresonant fibers for the mid-infrared, the demonstration in 2015 of the very first low loss hollow optical fibres in common low quality and cheap borosilicate glass, the theoretical finding and very first demonstration in 2016 of composite material hollow antiresonant fibres.

More details about his research are on his blog: www.walterbelardi.com

Key publications

  • W.Belardi, P.Sazio, F.De Lucia and F.Poletti, "Composite material Hollow Antiresonant Fibers", FiO 2016, Rochester 17-21 Oct 2016
  • W.Belardi, N.White, J.Lousteau, X.Feng and F.Poletti, "Hollow core antiresonant fibers in borosilicate glass", WSOF 2015, Hong Kong 4-6 Nov 2015
  • W.Belardi, ""Design and properties of hollow antiresonant fibers for the visible and near infrared spectral range", IEEE J. Lightwave Technology 33, 4497-4503 (2015).
  • W.Belardi and J.C.Knight, "Hollow antiresonant fibers with low bending loss", Opt. Express 22, 10091-10096 (2014).
  • W.Belardi and J.C.Knight, "Negative curvature fibers with reduced leakage loss", OFC 2014, San Francisco 9-13 Mar 2014.
  • W.Belardi and J.C.Knight, "Effect of core boundary curvature on the confinement losses of hollow antiresonant fibers", Opt. Express 21, 21912-21917 (2013).
  • W.Belardi, M.Douay and J.Zemmouri, "Design and realization of a photonic crystal fiber laser for the generation of singlet oxygen", JNPLI 2011, Paris 14-16 Sept. 2011
  • W.Belardi, G.Bouwmans, L.Provino and M.Douay, "Form-induced birefringence in elliptical hollow photonic crystal fiber with large mode area", IEEE J. Quantum Electr. 41,1558-1564 (2005)
  • W.Belardi, "Holey optical fibers for high nonlinearity devices", PhD Thesis (University of Southampton), 2003.
  • W.Belardi, J.H.Lee, K.Furusawa, Z.Yusoff, P.Petropoulos, M.Ibsen, T.M.Monro, and D.J.Richardson,"A 10 Gbit/s tuneable wavelength converter based on four-wave mixing in highly nonlinear holey fibre", ECOC 2002 Copenhagen 8-12 Sep 2002 PD
  • W.Belardi, K.Furusawa, T.M.Monro, D.J.Richardson, P.W.Turner, "Holey optical fibres", International publication number: WO 0216980 (2002).

    There are 51 publications in ORC database for 'Belardi'

    • 7730 —  W.Belardi, P.J.Sazio, F.De Lucia, F.PolettiComposite material hollow antiresonant fibers
      Frontiers in Optics USA 17-21 Oct 2016
      [Abstract]
         [ePrint: 407760]
    • 7665 —  L.Van Putten, E.Numkam Fokoua, S.M.Abokhamis Mousavi, W.Belardi, S.Chaudhuri, J.V.Badding, F.PolettiExploring the effect of the core boundary curvature in hollow antiresonant fibers
      Photonic Technology Letters 2016 Vol.29(2) pp.263-266
      [Abstract]
         [ePrint: 404862]
    • 7661 —  L.Van Putten, E.Numkam Fokoua, F.Poletti, W.Belardi, M.Abokhamis MousaviOptimizing the curvature of elliptical cladding elements to reduce leakage loss in antiresonant hollow core fibres
      42nd European Conference and Exhibition on Optical Communications (ECOC '16) Dusseldorf 18-22 Sep 2016 (Poster)
      [Abstract]
         [ePrint: 397172]
    • 7228 —  W.Belardi, N.White, J.Lousteau, X.Feng, F.PolettiHollow core antiresonant fibers in borosilicate glass
      Workshop on Specialty Optical Fibers Hong Kong 4-6 Nov 2015
      [Abstract]
         [ePrint: 384088]
    • 7172 —  W.BelardiDesign and properties of hollow antiresonant fibers for the visible and near infrared spectral range
      Journal of Lightwave Technology 2015 Vol.33(21) pp.4497-4503
      [Abstract]
         [ePrint: 381777]
    • 3051 —  J.H.V.Price, A.Malinowski, A.Piper, F.He, W.Belardi, T.M.Monro, M.Ibsen, B.C.Thomsen, Y.Jeong, C.Codemard, M.A.F.Roelens, P.Dupriez, J.K.Sahu, J.Nilsson, D.J.RichardsonAdvances in high power short pulse fiber laser systems and technology
      Photonics West 2005 San Jose 22-27 Jan 2005 5709-30 (Invited)
      [Abstract]
         [ePrint: 38957]
    • 2909 —  M.Fuochi, J.R.Hayes, K.Furusawa, W.Belardi, J.C.Baggett, T.M.Monro, D.J.RichardsonPolarization mode dispersion reduction in spun large mode area silica holey fibres
      Optics Express 2004 Vol.12(9) pp.1972-1977
      [Abstract]
         [ePrint: 13910]
    • 2738 —  D.J.Richardson, K.Furusawa, H.Ebendorff-Heidepriem, P.Petropoulos, V.Finazzi, J.C.Baggett, W.Belardi, T.Kogure, J.H.Lee, Z.Yusoff, J.Nilsson, Y.Jeong, J.K.Sahu, T.M.MonroPractical applications of holey optical fibers
      OFC 2004 Los Angeles 22-27 Feb 2004 (Invited)
      [Abstract]
         [ePrint: 41772]
    • 3252 —  W.BelardiHoley optical fibres for high nonlinearity devices
      PhD Thesis - Dec 2003 Supervisor: D.J.Richardson
      [Abstract]
         [ePrint: 42430]
    • 2853 —  L.Tartara, I.Cristiani, V.Degiorgio, F.Carbone, D.Faccio, M.Romagnoli, W.BelardiPhase-matched nonlinear interactions in a holey fiber induced by infrared super-continuum generation
      Optics Communications 2003 Vol.215 pp.191-197
      [Abstract]
         [ePrint: 13819]
    • 2606 —  J.H.V.Price, T.M.Monro, K.Furusawa, W.Belardi, J.C.Baggett, S.Coyle, C.Netti, J.J.Baumberg, R.Paschotta, D.J.RichardsonUV generation in a pure-silica holey fiber
      Applied Physics B 2003 Vol.77(2-3) pp.291-298
      [Abstract]
         [ePrint: 14052]
    • 2558 —  J.H.Lee, W.Belardi, K.Furusawa, P.Petropoulos, Z.Yusoff, T.M.Monro, D.J.RichardsonFour-wave mixing based 10Gbit/s tuneable wavelength conversion using a holey fiber with a high SBS threshold
      IEEE Photonics Technology Letters 2003 Vol.15(3) pp.440-442
      [Abstract]
         [ePrint: 13870]
    • 2557 —  J.H.Lee, Z.Yusoff, W.Belardi, M.Ibsen, T.M.Monro, D.J.RichardsonA tuneable WDM wavelength converter based on cross phase modulation effects in normal dispersion holey fiber
      IEEE Photonics Technology Letters 2003 Vol.15(3) pp.437-439
      [Abstract]
         [ePrint: 13871]
    • 2555 —  J.H.Lee, W.Belardi, T.M.Monro, D.J.RichardsonHoley fibre based nonlinear optical devices for telecommunications
      CLEO/QELS 2003 Baltimore 3-5 Jun 2003 (Invited)
      [Abstract]
         [ePrint: 41652]
    • 2503 —  Z.Yusoff, P.C.Teh, P.Petropoulos, K.Furusawa, W.Belardi, T.M.Monro, D.J.Richardson24 channels x 10 GHz multiwavelength pulse source based on supercontinuum generation in highly nonlinear holey fiber
      OFC 2003 Atlanta 23-28 Mar 2003
      [Abstract]
         [ePrint: 41672]
    • 2502 —  Z.Yusoff, J.H.Lee, W.Belardi, T.M.Monro, D.J.RichardsonApplications of Raman effect in holey fibre
      Photon 2002 Cardiff 2-5 Sep 2002
      [Abstract]
         [ePrint: 17006]
    • 2483 —  W.Belardi, T.M.Monro, J.H.Lee, Z.Yusoff, J.H.V.Price, A.Malinowski, A.Piper, D.J.RichardsonSilica holey fibres: fabrication and nonlinear effects
      Photon 2002 Cardiff 2-5 Sep 2002
      [Abstract]
         [ePrint: 17009]
    • 2481 —  W.Belardi, J.H.Lee, K.Furusawa, Z.Yusoff, P.Petropoulos, M.Ibsen, T.M.Monro, D.J.RichardsonA 10 Gbit/s tuneable wavelength converter based on four-wave mixing in highly nonlinear holey fibre
      European Conference on Optical Communication (ECOC) Copenhagen 8-12 Sep 2002 PD1.2 (Postdeadline)
      [Abstract]
         [ePrint: 17010]
    • 2462 —  T.M.Monro, V.Finazzi, W.Belardi, K.M.Kiang, J.H.Lee, D.J.RichardsonHighly nonlinear holey optical fibres: design manufacture and device applications
      European Conference on Optical Communication (ECOC) Copenhagen 8-12 Sep 2002 Sl.05 (Invited)
      [Abstract]
         [ePrint: 17022]
    • 2461 —  J.H.Lee, D.J.Richardson, Z.Yusoff, W.Belardi, T.M.MonroSystem applications of holey fibers
      IEEE/LEOS 2002 Glasgow 10-14 Nov 2002
      [Abstract]
         [ePrint: 17023]
    • 2438 —  C.W.J.Hillman, W.S.Brocklesby, T.M.Monro, W.Belardi, D.J.RichardsonOptical characterization of holey fibers using NSOM techniques
      Near Field Optics (NFO 7) Rochester 10-14 Aug 2002
      [Abstract]
         [ePrint: 17029]
    • 2424 —  D.J.Richardson, J.H.Lee, Z.Yusoff, W.Belardi, K.Furusawa, J.H.V.Price, M.Kiang, K.Frampton, D.Hewak, J.A.Tucknott, R.C.Moore, H.N.Rutt, T.M.MonroHoley fibers for nonlinear fiber devices
      Optical Amplifiers and Their Applications (OAA) 2002 Vancouver 14-17 Jul 2002 (Invited)
      [Abstract]
         [ePrint: 17032]
    • 2423 —  J.H.Lee, Z.Yusoff, W.Belardi, M.Ibsen, T.M.Monro, D.J.RichardsonInvestigation of Brillouin effects in small-core holey optical fiber: lasing and scattering
      Optics Letters 2002 Vol.27(11) pp.927-929
      [Abstract]
         [ePrint: 13768]
    • 2422 —  J.H.Lee, P.C.Teh, Z.Yusoff, M.Ibsen, W.Belardi, T.M.Monro, D.J.RichardsonA holey fiber-based nonlinear thresholding device for optical CDMA receiver performance enhancement
      IEEE Photonics Technology Letters 2002 Vol.14(6) pp.876-878
      [Abstract]
         [ePrint: 13769]
    • 2421 —  J.H.Lee, Z.Yusoff, W.Belardi, T.M.Monro, B.Thomsen, D.J.RichardsonHoley fiber based tuneable WDM wavelength converter using cross-phase modulation and filtering
      European Conference on Optical Communication (ECOC) Copenhagen 8-12 Sep 2002 3.4.3
      [Abstract]
         [ePrint: 17033]
    • 2420 —  J.H.Lee, Z.Yusoff, W.Belardi, M.Ibsen, T.M.Monro, B.Thomsen, D.J.RichardsonA holey fiber based WDM wavelength converter incorporating an apodized fiber Bragg grating filter
      CLEO/QELS 2002 Long Beach 19-24 Mar 2002 (Postdeadline)
      [Abstract]
         [ePrint: 17034]
    • 2404 —  D.J.Richardson, T.M.Monro, W.Belardi, K.FurusawaHoley fibers: new opportunities for manipulating light
      OECC 2002 Yokohama, Japan 8-12 Jul 2002 12D2-1 (Invited)
      [Abstract]
         [ePrint: 17040]
    • 2403 —  D.J.Richardson, T.M.Monro, W.Belardi, K.FurusawaHoley fibers: new possibilities for guiding and manipulating light
      IEEE/LEOS Workshop on Fibre and Optical Passive Components (WFOPC 2002) Glasgow 5-6 Jun 2002 (Invited)
      [Abstract]
         [ePrint: 17041]
    • 2398 —  J.H.V.Price, W.Belardi, T.M.Monro, A.Malinowski, A.Piper, D.J.RichardsonSoliton transmission and supercontinuum generation in holey fiber using a diode pumped ytterbium fiber source
      Optics Express 2002 Vol.10(8) pp.382-387
      [Abstract]
         [ePrint: 30229]
    • 2381 —  Z.Yusoff, J.H.Lee, W.Belardi, M.Ibsen, T.M.Monro, D.J.RichardsonA holey fiber based Brillouin laser
      CLEO 2002 Long Beach, California 19-24 May 2002 CMJ7
      [Abstract]
         [ePrint: 17051]
    • 2376 —  J.Nilsson, R.Selvas, W.Belardi, J.H.Lee, Z.Yusoff, T.M.Monro, D.J.Richardson, K.D.Park, P.H.Kim, N.ParkContinuous-wave pumped holey fiber Raman laser
      OFC 2002 Anaheim 17-22 Mar 2002 WR6
      [Abstract]
         [ePrint: 17054]
    • 2340 —  Z.Yusoff, J.H.Lee, W.Belardi, T.M.Monro, P.C.Teh, D.J.RichardsonRaman effects in a highly nonlinear holey fiber: amplification and modulation
      Optics Letters 2002 Vol.27(6) pp.424-426
      [Abstract]
         [ePrint: 13789]
    • 2333 —  D.J.Richardson, W.Belardi, K.Furusawa, J.H.V.Price, A.Malinowski, T.M.MonroHoley fibers: fundamentals and applications
      CLEO 2002 Long Beach, California 19-24 May 2002 CThE1 (Invited)
      [Abstract]
         [ePrint: 17072]
    • 2328 —  D.J.Richardson, W.Belardi, K.Furusawa, T.M.MonroHoley fibres: fundamentals and applications
      CPT 2002 Yurakucho, Tokyo 15-17 Jan 2002 (Invited)
      [Abstract]
         [ePrint: 17073]
    • 2281 —  J.H.Lee, P.C.Teh, Z.Yusoff, M.Ibsen, W.Belardi, T.M.Monro, D.J.RichardsonAn OCDMA receiver incorporating a holey fibre nonlinear thresholder
      European Conference on Optical Communication (ECOC) Amsterdam 30 Sep - 4 Oct 2001 PD.B.1.2 (Postdeadline)
      [Abstract]
         [ePrint: 17122]
    • 2280 —  J.H.Lee, Z.Yusoff, W.Belardi, T.M.Monro, P.C.Teh, D.J.RichardsonA holey fibre Raman amplifier and all-optical modulator
      European Conference on Optical Communication (ECOC) Amsterdam 30 Sep - 4 Oct 2001 PDA 1.1 (Postdeadline)
      [Abstract]
         [ePrint: 17123]
    • 2273 —  P.Petropoulos, T.M.Monro, W.Belardi, K.Furusawa, J.H.Lee, D.J.Richardson2R-regenerative all-optical switch based on a highly nonlinear holey fiber
      Optics Letters 2001 Vol.26(16) pp.1233-1235
      [Abstract]
         [ePrint: 13669]
    • 2272 —  C.W.J.Hillman, W.S.Brocklesby, T.M.Monro, W.Belardi, D.J.RichardsonStructural and optical characterisation of holey fibres using scanning probe microscopy
      Electronics Letters 2001 Vol.37(21) pp.1283-1284
      [Abstract]
         [ePrint: 13683]
    • 2242 —  W.Belardi, T.M.Monro, J.H.V.Price, J.H.Lee, P.Petropoulos, D.J.RichardsonFabrication and applications of highly nonlinear silica holey fibres
      QEP-15 Glasgow 3-6 Sep 2001 pp.101
      [Abstract]
         [ePrint: 17139]
    • 2237 —  N.G.R.Broderick, T.M.Monro, D.J.Richardson, W.BelardiPractical aspects of holey optical fibres
      OECC/IOCC Sydney Australia 1-5 Jul 2001 (Invited)
      [Abstract]
         [ePrint: 17143]
    • 2227 —  T.M.Monro, J.C.Baggett, W.Belardi, K.Furusawa, J.H.V.Price, D.J.RichardsonHoley fibres: Properties applications and future directions
      ICTON 2001 Cracow Poland 18-21 Jun 2001
      [Abstract]
         [ePrint: 17147]
    • 2180 —  J.C.Baggett, T.M.Monro, W.Belardi, D.J.RichardsonAssorted core air-clad fibre
      IOP Physics Congress 2001 Brighton 18-22 Mar 2001
      [Abstract]
         [ePrint: 17176]
    • 2171 —  J.H.V.Price, W.Belardi, L.Lefort, T.M.Monro, D.J.RichardsonNonlinear pulse compression dispersion compensation and soliton propagation in holey fiber at 1 Ám
      Nonlinear Guided Waves and Their Applications 2001 Clearwater Florida 25-28 Mar 2001 WB1 (Invited)
      [Abstract]
         [ePrint: 15035]
    • 2157 —  P.Petropoulos, T.M.Monro, W.Belardi, K.Furusawa, J.H.Lee, D.J.RichardsonA highly nonlinear holey fiber and its application in a regenerative optical switch
      OFC 2001 Anaheim 17-22 Mar 2001 TuC
      [Abstract]
         [ePrint: 17194]
    • 2155 —  T.M.Monro, W.Belardi, K.Furusawa, J.C.Baggett, N.G.R.Broderick, D.J.RichardsonSensing with microstructured optical fibres
      Measurement Science and Technology 2001 Vol.12(7) pp.854-858
      [Abstract]
         [ePrint: 13707]
    • 2146 —  D.Faccio, A.Busacca, W.Belardi, V.Pruneri, P.G.Kazansky, T.M.Monro, D.J.Richardson, B.Grappe, M.Cooper, C.N.PannellDemonstration of thermal poling in holey fibres
      Electronics Letters 2001 Vol.37(2) pp.107-108
      [Abstract]
         [ePrint: 13711]
    • 2140 —  D.Faccio, A.Busacca, V.Pruneri, P.G.Kazansky, T.M.Monro, W.Belardi, D.J.Richardson, B.Grappe, M.Cooper, C.N.PannellExperimental study of thermal poling in holey fibres
      Nonlinear Guided Waves and Their Applications Clearwater Florida 25-28 Mar 2001 MD3
      [Abstract]
         [ePrint: 17202]
    • 2089 —  J.C.Baggett, T.M.Monro, W.Belardi, K.Furusawa, D.J.RichardsonAssorted core air-clad fibre
      CLEO 2001 Baltimore 6-11 May 2001 CTuAA4
      [Abstract]
         [ePrint: 17214]
    • 2087 —  D.Faccio, A.Busacca, V.Pruneri, P.G.Kazansky, T.M.Monro, W.Belardi, D.J.Richardson, B.Grappe, M.Cooper, C.N.PannellFirst demonstration of thermal poling in holey fibres
      CLEO 2001 Baltimore 6-11 May 2001 JTuB7
      [Abstract]
         [ePrint: 17216]
    • 2077 —  J.C.Baggett, T.M.Monro, W.Belardi, K.Furusawa, D.J.RichardsonAssorted core air-clad fibre
      Electronics Letters 2000 Vol.36(25) pp.2065-2066
      [Abstract]
         [ePrint: 13614]
    • 2044 —  T.M.Monro, W.Belardi, K.Furusawa, N.G.R.Broderick, D.J.RichardsonMicrostructured optical fibres: New opportunities for sensing
      OFS 2000 Venice 11-13 Oct 2000 Fr4-2 (Invited)
      [Abstract]
         [ePrint: 16918]

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