Dr. Namassivaye Kejalakshmy Profile

Dr. Namassivaye Kejalakshmy

Researcher at City Univ London

SPIE Involvement:

Author

Area of Expertise:

Finite element method , waveguides , fiber optic , sensors , plasmonic

Publications (20)

Proceedings Article | 9 January 2015 Paper

Rigorous characterization of photonic devices by finite element method

B. M. A. Rahman, N. Kejalakshmy

Proceedings Volume 9444, 944404 (2015) https://doi.org/10.1117/12.2177636

KEYWORDS: Waveguides, Photonic devices, Finite element methods, Dielectric polarization, Electro optical modeling, Photonic crystals, Electro optics, Silicon, Beam propagation method, Terahertz radiation

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Proceedings Article | 21 May 2014 Paper

Characterization of graphene-based devices for THz systems

Christos Themistos, B. M. Rahman, Christos Markides, Md. Uthman, A. Quadir, N. Kejalakshmy

Proceedings Volume 9102, 91020F (2014) https://doi.org/10.1117/12.2054784

KEYWORDS: Graphene, Finite-difference time-domain method, Silica, Surface plasmons, Terahertz radiation, Finite element methods, Dispersion, Waveguides, Wave propagation, Interfaces

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SPIE Journal Paper | 10 March 2014

Characterization of low-loss waveguides and devices for terahertz radiation

B. M. Rahman, Christos Markides, Mohammad Uthman, Anita Quadir, Namassivaye Kejalakshmy, Christos Themistos

OE, Vol. 53, Issue 03, 031210, (March 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.3.031210

KEYWORDS: Waveguides, Terahertz radiation, Quantum cascade lasers, Dielectrics, Metals, Wave propagation, Plasmonics, Signal attenuation, Photonic crystal fibers, Plasmonic waveguides

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Proceedings Article | 31 May 2013 Paper

Low-loss waveguides and devices for compact THz systems

B. M. Rahman, M. Uthman, A. Quadir, N. Kejalakshmy, C. Markides, C. Themistos

Proceedings Volume 8716, 87160R (2013) https://doi.org/10.1117/12.2017622

KEYWORDS: Waveguides, Terahertz radiation, Signal attenuation, Metals, Wave propagation, Dielectrics, Quantum cascade lasers, Cladding, Dispersion, Plasmonics

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Proceedings Article | 14 March 2013 Paper

Silicon slot waveguides and their rigorous characterization

B. M. A. Rahman, D. M. H. Leung, N. Kejalakshmy, Long To

Proceedings Volume 8629, 86290K (2013) https://doi.org/10.1117/12.2008203

KEYWORDS: Waveguides, Silicon, Silica, Refractive index, Finite element methods, Magnetism, Photonic integrated circuits, Interfaces, Silicon photonics, Dielectrics

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Proceedings Article | 9 May 2012 Paper

Design optimization of low-loss waveguides for THz guidance

B. M. Rahman, Anita Quadir, N. Kejalakshmy, K. T. Grattan

Proceedings Volume 8363, 83630H (2012) https://doi.org/10.1117/12.921152

KEYWORDS: Metals, Waveguides, Dielectrics, Terahertz radiation, Coating, Cladding, Interfaces, Gold, Silver, Surface plasmons

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Proceedings Article | 6 December 2011 Paper

Optimizing the power confinement in silicon slot waveguides by use of finite element method

D. M. Leung, X. Kan, B. M. Rahman, N. Kejalakshmy, K. T. Grattan

Proceedings Volume 8307, 83071A (2011) https://doi.org/10.1117/12.904947

KEYWORDS: Waveguides, Silicon, Silica, Finite element methods, Interfaces, Polarization, Refractive index, Modulators, Sensors, Nanowires

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Proceedings Article | 19 January 2011 Paper

Rigorous characterization of surface plasmon modes by using the finite element method

B. M. A. Rahman, H. Tanvir, N. Kejalakshmy, A. Quadir, K. Grattan

Proceedings Volume 7941, 79410W (2011) https://doi.org/10.1117/12.876959

KEYWORDS: Waveguides, Terahertz radiation, Metals, Cladding, Surface plasmons, Wave propagation, Quantum cascade lasers, Coating, Finite element methods, Refractive index

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Proceedings Article | 18 January 2011 Paper

Rigorous characterization of silicon nanowires and nanophotonic devices

B. M. A. Rahman, D. M. Leung, K. Namassivayane, T. Koshy, Z. Jiang, A. Law, H. Ahmed, K. Grattan

Proceedings Volume 7943, 79430H (2011) https://doi.org/10.1117/12.873067

KEYWORDS: Waveguides, Silicon, Silica, Dispersion, Cladding, Interfaces, Refractive index, Birefringence, Solids, Nanowires

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Proceedings Article | 18 May 2010 Paper

Rigorous characterization of silicon nanowire for compact nanophotonic devices

B. M. A. Rahman, D. M. H. Leung, K. Namassivayane, A. Agrawal, M. Ashraf, H. Tanvir, K. T. Grattan

Proceedings Volume 7719, 77191A (2010) https://doi.org/10.1117/12.849389

KEYWORDS: Waveguides, Silicon, Silica, Cladding, Interfaces, Birefringence, Refractive index, Magnetism, Dielectrics, Nanowires

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Proceedings Article | 14 May 2010 Paper

Single mode and single polarization operation in photonic crystal fibers

B. M. Rahman, N. Kejalakshmy, A. Agrawal, M. Uthman, K. T. Grattan

Proceedings Volume 7714, 77140J (2010) https://doi.org/10.1117/12.849391

KEYWORDS: Polarization, Birefringence, Waveguides, Finite element methods, Photonic crystal fibers, Cladding, Silica, Lawrencium, Dielectric polarization, Refractive index

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Proceedings Article | 11 May 2010 Paper

Rigorous characterization of surface plasmon modes by using the finite element method

B. M. Rahman, N. Kejalakshmy, H. Tanvir, A. Quadir, K. T. Grattan

Proceedings Volume 7712, 77121X (2010) https://doi.org/10.1117/12.849392

KEYWORDS: Scanning probe microscopy, Quantum cascade lasers, Doping, Waveguides, Terahertz radiation, Metals, Refractive index, Surface plasmons, Plasma, Dielectrics

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Proceedings Article | 18 February 2009 Paper

Finite element characterisation of terahertz quantum cascade laser waveguides

H. Tanvir, B. M. A. Rahman, C. Themistos, N. Kejalakshmy, T. Chattppaddhaye, K. T. Grattan

Proceedings Volume 7215, 72150M (2009) https://doi.org/10.1117/12.807930

KEYWORDS: Waveguides, Doping, Quantum cascade lasers, Plasma, Metals, Gallium antimonide, Gallium arsenide, Surface plasmons, Interfaces, Semiconductors

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Proceedings Article | 21 April 2008 Paper

Single-mode and single-polarization operation of photonic crystal fibres

Kejalakshmy Namassivayane, Azizur Rahman, Kenneth Grattan

Proceedings Volume 6990, 69900G (2008) https://doi.org/10.1117/12.782731

KEYWORDS: Finite element methods, Birefringence, Photonic crystal fibers, Polarization, Waveguides, Magnetism, Solids, Cladding, Silica, Fused deposition modeling

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Proceedings Article | 12 October 2007 Paper

Characterization of single-mode and single-polarization photonic crystal fibers by using a full-vectorial finite element approach

N. Kejalakshmy, A. K. M. Saiful Kabir, G. Murshed Thakur, A. Agrawal, B. M. Azizur Rahman, K. Grattan

Proceedings Volume 6767, 67670B (2007) https://doi.org/10.1117/12.736284

KEYWORDS: Birefringence, Finite element methods, Polarization, Photonic crystal fibers, Silica, Cladding, Chemical elements, Magnetism, Solids, Refractive index

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Proceedings Article | 26 September 2007 Paper

Characterization of photonic crystal fibers for terahertz frequencies

B. M. Rahman, N. Kejalakshmy, Tanvir Huda, Kenneth Grattan

Proceedings Volume 6772, 67720D (2007) https://doi.org/10.1117/12.736346

KEYWORDS: Terahertz radiation, Waveguides, Optical fibers, Cladding, Photonic crystal fibers, Finite element methods, Dielectrics, Imaging spectroscopy, Silica, Dispersion

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Proceedings Article | 21 May 2007 Paper

Single mode operation of photonic crystal fiber using a full vectorial finite element method

Namassivayane Kejalakshmy, B. M. Azizur Rahman, A. K. M. Saiful Kabir, Muttukrishnan Rajarajan, Kenneth Grattan

Proceedings Volume 6588, 65880T (2007) https://doi.org/10.1117/12.723261

KEYWORDS: Finite element methods, Photonic crystal fibers, Terahertz radiation, Solids, Cladding, Silica, Waveguides, Magnetism, Space operations, Fused deposition modeling

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Proceedings Article | 18 October 2006 Paper

Characterizations of photonic crystal fibers by using a full-vectorial finite element method

B. M. A. Rahman, A. K. M. Saif ul Kabir, K. Namassivayane, Isuru Wijeratne, M. Rajarajan, K. T. V. Grattan

Proceedings Volume 6369, 636904 (2006) https://doi.org/10.1117/12.686014

KEYWORDS: Birefringence, Finite element methods, Cladding, Polarization, Photonic crystal fibers, Dispersion, Solids, Silica, Waveguides, Chemical elements

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Proceedings Article | 18 February 2004 Paper

Brewster angle in absorbing anisotropy crystals

Kejalakshmy Namassivayane

Proceedings Volume 5249, (2004) https://doi.org/10.1117/12.512905

KEYWORDS: Refractive index, Crystals, Anisotropy, Semiconductors, Dielectrics, Computer simulations, Numerical analysis, Spectroscopy, Glasses, Physics

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SPIE Journal Paper | 1 November 2001

Simple method of Brewster angle measurement for the determination of refractive indices in transparent biaxial crystal

N. Kejalakshmy, K. Srinivasan

OE, Vol. 40, Issue 11, (November 2001) https://doi.org/10.1117/12.10.1117/1.1412617

KEYWORDS: Crystals, Refractive index, Nonlinear crystals, Potassium, Hydrogen, Dielectrics, Interfaces, Nonlinear optics, Optical engineering, Physics

Showing 5 of 20 publications

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