Personal Details

This page is maintained by .

Dr. XU Xuewu

Principal Scientist I


Advanced Optical Technologies (AOT) Department

6714 9073

2 Fusionopolis Way, Innovis, #08-03, Singapore 138634

Research Details

  1.  Nanophotonics

  2.  Spatial light modulator (SLM)

  3.  Holography and holographic 3D display

  4.  Nondestructive testing (NDT)

  1.  Design and simulations of tunable metasurfaces for 3D display and beam steering applications.

  2.  Optical measurements and characterization of liquid crystal-based tunable metasurfaces

  3.  Metasurface-assisted spatial light modulators (SLMs) for next-generation display applications.

  4.  Holographic 3D display and system development.

  5.  Digital shearography (DS) and pulsed phase thermography (PPT) for NDT in Aerospace Industry.

  6.  Growth and characterization of various functional crystal materials.


  1.  NSLM - Nanoantenna nanofabrication, optical characterization, liquid crystal integration and device testing
  (WP4), member, Mar 2019-now

  2.  Sub-wavelength-resolution spatial light modulators based on active nanoantennas and metasurfaces,
  member, 2015-2019

  3.  Development of an Integrated Digital Shearography and Pulsed Phase Thermography System for Dynamic
  Non-destructive Detection of Weak Bonds in Carbon Fibre Reinforced Polymer Composites,
  Principal Investigator (PI), 2017-2019

  4.  Out of Autoclave Structural Bonded Repair of Composite Aircraft Structures :  Quality of Control of Bonding
  Process, Principle Investigator (PI), 2015-2017

  5. Principal Investigator (PI) of the full-color full-parallax 3D holographic display projects (Phase I and Phase II)
  funded by A*STAR Home2015 Programme (2007.4-2012.8)


  Jun 2018 - Now :  Scientist III /Principal Specialist I, IMRE, A*STAR, Singapore

  May 1997 - May 2018 :  Senior Research Engineer /Principle Research Engineer /Research Scientist
  /Scientist III; Group Leader /Program Manager /Program Leader /Principal Investigator, DSI, A*STAR, Singapore

  Jan 1996 - May 1997 :  (post-doctoral) Research Fellow, Department of Electrical Engineering, NUS, Singapore

  Jul 1991 - Dec 1995 :  Asst. Researcher /Assoc. Researcher in Crystal Department, Shanghai Institute
  of Ceramics, Chinese Academy of Sciences, China


  Sep 1986 - Jul 1991 :  PhD in Crystal Growth and Materials Characterization, Shanghai Institute of Ceramics,
  Chinese Academy of Sciences, China

  Sep 1982 - Sep 1986 :  Bachelor of Science (BSc.) in Crystal Physics, Department of Physics,
  Nanjing University, China


  1.  A*STAR Aerospace Programme Achievement Award (2017)

  2.  SPIE Senior Member (2013)


  1.  Member of the Society for Information Display (SID)

  2.  Member of the Society of Photo-Optical Instrumentation Engineers (SPIE)


  • S.Q. Li, X.W. Xu, R.M. Veetil, V. Valuckas, R. Paniagua-Dominguez, and A.I. Kuznetsov, "Phase-only transmissive spatial light modulator based on tunable dielectric metasurface", [physics.optics], January 24, 2019.
  • R. Paniagua-Dominguez, S.Q. Li, X.W. Xu, M.Y. Sun, R.M. Veetil, X.A. Liang and A.I. Kuznetsov, "Dynamic control at visible wavelengths of all-dielectric metasurfaces embedded in liquid cystals (Conference Presentation)", Proc. SPIE 10928, High Contrast Metastructures VIII, 1092800 (8 March 2019); doi : 10.1117/12.2507714; .

  • M.Y. Sun, X.W. Xu, X.A. Liang , X.W. Sun, Y.J. Zheng, “Effect of oxidation on perpendicular magnetic behavior of MnBi thin films”, Journal of Alloys and Compounds, 672 (2016) 59-63.

  • R.T. Zheng, X.W. Xu, X.A. Liang and Z.M. Lum, “Determination of magneto-optical constants by measuring Kerr rotation angles of magnetic films with different sample structures”, J. Opt. Technol., 83 (2016) 132-136.

  • X.A. Liang, X.W. Xu, R.T. Zheng, Z.M. Lum and J.J. Qiu, “Optical constant of CoFeB thin film measured with interference enhancement method”, Applied Optics, 54 (2015) 1557-1563.

  • X.W. Xu, X.A. Liang, Y.C. Pan, R.T. Zheng, Z.M. Lum, “Spatiotemporal Multiplexing and Streaming of Hologram Data for Full-Color Holographic Video Display”, Optical Review, Vol. 21, No. 3, pp.220-225, 2014.

  • Y.C. Pan, X.W. Xu, and X. A. Liang, “Fast distributed large-pixel-count hologram computation using a GPU cluster”, Appl. Opt., Vol. 52, No. 26, pp.6562-6571, 2013.

  • X.W. Xu, “Three-dimensional dancing bear shows the way to practical holographic display”, 1 February 2013, SPIE Newsroom. DOI: 10.1117/2.1201301.004700.

  • X.W. Xu, X.A. Liang, Y.C. Pan, R.T. Zheng, Z.M. Lum, P.P.M.Y. Lwin, S. Solanki, “Development of full-color full-parallax digital 3D holographic display system and its prospects”, Proceedings of SPIE, Vol. 8644, pp.864409-1 - 864409-10, 2013 (Invited Paper).

  • Y.C. Pan, X.W. Xu, X.A. Liang, Z.M. Lum, R.T. Zheng, P.P.M.Y. Lwin, “Large-Pixel-Count Hologram Data Processing for Holographic 3D Display”, Proceedings of SPIE, Vol. 8644, pp.86440F-1 – 86440F-7, 2013.

  • Z.M. Lum, X.A. Liang, Y.C. Pan, R.T. Zheng, X.W. Xu, “Increasing pixel count of digital holograms for three-dimensional holographic display by optical scan-tiling”, Optical Engineering, Vol. 52, No. 1, pp.015802-1 - 015802-9, 2013.

  • C.H. Ong, S. Solanki; X.A. Liang; X.W. Xu, “Analysis of laser speckle severity, granularity, and anisotropy using the power spectral density in polar-coordinate representation”, Optical Engineering, Vol. 51, No. 5, pp.054301-1 - 054301-7, 2012.

  • X.A. Liang, Y.C. Pan, X.W. Xu, “Ray-casting CRT algorithm for holographic 3D display with full parallax occlusion effect”, Proceedings of SPIE, Vol. 8281, pp.82810G-1 - 9, 2012.

  • X.F. Cheng, Y.K. Yeo, C. Li, X.W. Xu, “Wavelength-agile optical access networking system,” SPIE-OSA-IEEE, 8310, pp.83100O-1-7, 2011 (Invited Paper).

  • X.W. Xu, Y.C. Pan, P.P.M.Y. Lwin, X.A. Liang, “3D Holographic Display and Its Data Transmission Requirement”, IEEE Conferences, Information Photonics and Optical Communications (IPOC), 2011 International Conference on, 23-Oct-2011, pp.1-4 (Invited Paper).

  • X.W. Xu, X.A. Liang, Y.C. Pan, Z.M. Lum, “Advances and Challenges in Spatial Light Modulators for 3D Holographic Display”, International Workshop on Holography and related technologies (IWH), 16-Nov-2011, Utsunomiya Univ., Japan, IWH 2011 Digests, E3 (Invited Talk).

  • X.W. Xu, S. Solanki, X.A. Liang, Y.C. Pan, T.C. Chong, “Full High-Definition Digital 3D Holographic Display and Its Enabling Technologies”, Proceedings of SPIE, Vol. 7730, pp.77301C1-10, 2010 (Invited Paper).

  • R.B.A. Tanjung, X.W. Xu, X.A. Liang, S. Solanki, Y.C. Pan, F. Farbiz, B.X. Xu, T.C. Chong, “Digital holographic three-dimensional display of 50-Mpixel holograms using a two-axis scanning mirror device”, Optical Engineering, Vol. 49, No. 2, pp.025801-1 - 025801-9, 2010.
  • Y.C. Pan, X.W. Xu, S. Solanki, X.A. Liang, R.B.A. Tanjung, C.W. Tan, T.C. Chong, “Fast CGH computation using S-LUT on GPU”, OPTICS EXPRESS, Vol. 17, No. 21, pp.18543-18555, 2009.

  • X.W. Xu, S. Solanki, X.A. Liang, S.H. Xu, R.B.A. Tanjung, Y.C. Pan, F. Farbiz, B.X. Xu, T.C. Chong, “Computer-Generated Holography for Dynamic Display of 3D Objects with Full Parallax”, The International Journal of Virtual Reality, Vol. 8, No. 2, pp.33-38, 2009.

  • X.A. Liang, X.W. Xu, S. Solanki, Y.C. Pan, R.B.A. Tanjung, C.W. Tan, B.X. Xu, T.C. Chong, “3D Holographic display with opticaly addressed spatial light modulator”, IEEE Proceeding, 3DTV Conference 2009, Potsdam, Germany, 04-06 May 2009.

  • X.A. Liang, X.W. Xu, S. Solanki, M.H. Li, T.C. Chong, “One-color nonvolatile holographic recording in Ce:Tb:LiNbO3”, Japanese J. Appl. Phys., Vol. 47, No. 7, pp.5923-5926, 2008.

  • X.W. Xu, X.A. Liang, M.H. Li, S. Solanki, T.C. Chong, “Two-color nonvolatile holographic recording in Bridgman-grown Ru:LiNbO3 crystals”, J. Crystal Growth, Vol. 310, pp.1976-1980, 2008.

  • S. Solanki, X.W. Xu, M.H. Li, X.A. Liang, T.C. Chong, “Random Phase 3D-Shift Multiplexing with Spherical Signal-Reference Waves in Reflection Geometry”, Proc. of SPIE, Vol. 6620, pp.66201D1-6, 2007.

  • M.H. Li, X.W. Xu, S. Solanki, X.A. Liang, T.C. Chong, “Laminated Holographic Recording Medium Based-on Photorefractive Crystal”, Proc. of SPIE, Vol. 6620, pp.66201L1-7, 2007.

  • X.A. Liang, X.W. Xu, T.C. Chong, M.H. Li, S. Solanki, “Single domain structure and two-color holographic recording in LiNbO3:Cu:Ce crystals grown by the vertical Bridgman method”, J. Crystal Growth, 287, pp.463-467, 2006.

  • W. Xu, X.W. Xu, T.C. Chong, Y.S. Tay, G.Y. Zhang, M.H. Li, B. Freeman, “Magneto-optical properties of Ce and Bi co-substituted iron garnets grown by the Bi2O3 self-flux technique”, Appl. Phys. A, 81, pp.565-568, 2005.

  • X.W. Xu, X.A. Liang, T.C. Chong, S.N. Yuan, S. Solanki, Y.S. Tay, “Vertical Bridgman growth and optical characterization of LiNbO3:Cu:Ce crystals”, J. Crystal Growth, 275,  pp.791-797, 2005.

  • Z.W. Zhong, X.W. Xu, T.C. Chong, S.N. Yuan, M.H. Li, G.Y. Zhang, B. Freeman, “HoYbBIG epitaxial thick films used for Faraday rotator in the 1.55 mm band”, J. Magnetism and Magnetic Materials, 285, pp.433-438, 2005.

  • G.Y. Zhang, X.W. Xu, W. Xu, T.C. Chong, “Magneto-optical properties of Bi-substituted rare-earth iron garnets in 1.55-mm-wavelength band”,  Jpn. J. Appl. Phys. Part 1, 43, pp.7042-7044, 2004.

  • X.W. Xu, T.C. Chong, S. Solanki, X.A. Liang, S.N. Yuan, “Anisotropic thermal expansion of stoichiometric lithium niobate crystals grown along the normal direction of facets”, Optical Materials, 26, pp.489-494, 2004.

  • G.Y. Zhang, X.W. Xu, T.C. Chong, “Faraday rotation spectra of bismuth-substituted rare-earth iron garnet crystals in optical communication band”, J. Appl. Phys., 95, pp.5267-5270, 2004.

  • X.A. Liang, X.W. Xu, T.C. Chong, S.N. Yuan, F.L. Yu, Y.S. Tay, “Lithium in-diffusion treatment of thick LiNbO3 crystals by the vapor transport equilibration method”, J. Crystal Growth, 260, pp.143-147, 2004.

  • X.W. Xu, T.C. Chong, G.Y. Zhang, M.H Li, L.H. Soo, W. Xu, B. Freeman, “Vertical Bridgman growth of calcium lithium niobium gallium garnet crystals”, J. Crystal Growth, 250, pp.62-66, 2003.

  • X.W. Xu, T.C. Chong, G.Y. Zhang, H. Kumagai, “Influence of [K]/[Li] and [Li]/[Nb] ratios in melts on the TSSG growth and SHG characteristics of potassium lithium niobate crystals”, J. Crystal Growth, 225(2-4), pp. 458-464, 2001.

  • T.C. Chong, X.W. Xu, G.Y. Zhang, H. Kumagai, “Blue SHG characteristics and homogeneity of the TSSG grown potassium lithium niobate (KLN) crystal with high Li2O content”, J. Crystal Growth, 225(2-4), pp.489-494, 2001.

  • X.W. Xu, T.C. Chong, G.Y. Zhang, L. Li, P.F. Hu, H. Kumagai, M. Hirano, “Morphology of TSSG grown potassium lithium niobate (KLN) crystal in relation to its structure and growth conditions”, J. Crystal Growth, 211, pp.265-270, 2000.

  • M.H. Li, X.W. Xu, D.X. Qiu, T.C. Chong, H. Kumagai, M. Hirano, “Influence of Ce and Co doping ions on photorefactive effect of SBN: 61 crystals”, J. Crystal Growth, 211, pp.225-229, 2000.

Last updated on : 17 Jul 2019 05:31 PM