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Dr. Omkar Nath Singh
Institute Professor (Retired)
Department of Physics, IIT (BHU) Varanasi
Area of Interest: 
Spectroscopy, Fiber Optics

Educational Qualification:

  • Ph. D. (1974), IT-BHU, Topic: Spectroscopy-"High Resolution Study of Diatomic Molecules"
  • M. Sc. (1970), Physics(Specialization - Spectroscopy), Faculty of Science, BHU

Areas of Research:

  • Spectroscopy
  • Fiber Optics

​​Positions Held:

  • Institute Professor: Physics, IIT (BHU), (July 2015 onwards).
  • Head of the Department: Physics, IIT (BHU), (November 2011 - Aug 2013).
  • Professor: Department of Physics, IIT (BHU).
  • Head of the Department: Applied Physics, IIT (BHU), July, 2006- June, 2009.

  • D. Kumar, P. K. Choudhury, and O. N. Singh II, "Towards the dispersion relations for dielectric optical fibers with helical windings under slow- and fast-wave considerations - a comparative analysis", Progress In Electromagnetics Research, 80, 409-420 (2008).
  • Deepak Kumar and O. N. Singh II, “ Modal characteristic equation and dispersion curves for an Elliptical step-index Fiber with a conducting helical winding on the core-cladding boundary – an analytical study”, Journal of Lightwave Technology, 20, 1416, 2006.
  • Deepak Kumar and ON Singh II, “Elliptical and circular step index fibers with the conducting helical windings on the core cladding boundaries for different winding pitch angles- A Comparative Modal Dispersion Analysis”, Progress in electromagnetic Research PIER, 52, 1-21 (2005) (M.I.T., U.S.A.).
  • Deepak Kumar and O.N. Singh II , “Analysis of the propagation characteristics of a step-index waveguide of annular circular cross section with conducting helical; winding s on the inner and outer boundary surface between the guiding and non guiding regions”,Journal of Electromagnetic Waves and Application, 18(12), 1655-1669 (2004) (M.I.T, U.S.A).
  • Deepak Kumar and O.N. Singh II, “Modal characteristic equation and dispersion curve for an elliptical step-index fiber with a conducting helical winding on the core cladding boundary- an analytical study”, IEEE J. Lightwave Tech. (U.S.A) 20, 1416-1424 (2002).
  • Deepak Kumar and O.N. Singh II, “An analytical study of the modal characteristic of annular step index waveguide of elliptical cross section with two conducting helical winding on the two conducting helical winding on the two boundary surface between the guiding and non guiding regions”, Optic (Germany) 113(5), 192-196 (2002).
  • Deepak Kumar and O.N. Singh II, “Some special cases of propagation characteristics of an elliptical step index fiber with a conducting helical winding on the core cladding boundary an analytical treatment”, Optic (Germany) 112(12), 561-566 (2001).
  • C.B.P. Verma, U.K.Singh, V.B.Singh and O.N.Singh II, “Confocal and concentric annular elliptic light guides and their modal characteristics”, Optic (Germany) 112, 105-108 (2001).
  • C.B.P. Verma, U.K.Singh and O.N.Singh II, “Modal characteristics of an annular waveguides of constant radial width having elliptical boundaries”, Microwave. Opt. Techno. Lett. (U.S.A) 28(1), 40-43(2001).
  • U.N.Singh, O.N.Singh II, P.Khastgir and K.K.Dey, “Dispersion characteristics of helically cladded step-index optical fiber: An analytical Study”, J.Opt.Soc.America B.121273(1995).
  • U.N.Singh, O.N.Singh II, V.KChaubey, P.Khastgir and K.K.Dey,“Theoretical Analytical of Cut-Off Condition of Doubly-Clad Optical Fibrewith helically conducting outer boundary”, Indian J Pure Appl.Phys. 32,797(1994).
  • U.N.Singh, O.N.Singh II, P.Khastgir and K.K.Dey, “Mode cut-off Analysis of a tape-Helix Cladded Optical Fiber”, Proc. National Symp. Antennas and prorogation pp.208-212(1994)(held at Dept of Electronics,CUSAT,Kochi,India from Nov,17-19,1994).
  • U.N.Singh and O.N.Singh II, “Simplified Analysis of a proposed novel optical fiber”, Proc. National Conc. Electronics Circuits and Systems, Tata McGraw-Hill pp.635-637 (1989) held at Dept of Electronics & Computer Engineering, University of Roorkee, from Nov.2-4, 1989.
  • Onkar N Singh, B.P Astana and O.N.SinghII, “Perturbations and Ground State Dissociation Product in the mono-Sulphides of Beryllium and barium”, J.Chim.Phys76,555(1979).
  • Onkar N.Singh, B.N.Dwidedi and R.N.Singh,”Study of Cytherean Ionosphere”, presented in Symp on Planetar Surface Atmosphere, held on 29th May -1st June,1978 at Innsbruck.
  • B.P.Astana, Onkar N.Singh and A.R.Shukla, “On the Dissociation Energies of IV A Mono-Sulphides”, Acta Phys Polonica A52, 729((1977).
  • Onkar N.Singh and R.N.Singh, “Ultraviolet Emission from Jovian Atmosphere”, Indian J. Radio Space Physics 6,77,1977.
  • Onkar N.Singh and B.P.Asthana, “Dissociation energy and dissociation products of the known electronics state of PtO and PtC”, Acta Phys.Polonica., A51, 575(1977).
  • Onkar N.Singh and R.N.Singh, “The Composition of the Jovian Ionosphere”, Proc. symp. Solar Planet Physics 2, 219(1976).
  • Onkar N.Singh, J.Singh and O.N. Singh, “Evaluation of the effective rotational temperature in Bsystem of PbF”, Indian J. Pure Applied Physics 14, 274(1976).
  • Onkar N.Singh, B.P.Asthana and O.N. Singh, “Precise vibrational analysis of B-X System of Bil”, Spectro.lett.8, 101(1975).
  • Onkar N.Singh, B.P.Asthana and O.N. Singh, “On the dissociation energy of MgF”, Spectro.lett.7, 175(1974).
  • Onkar N.Singh, I.S.Singh and O.N. Singh, “Rotational analysis of B-X2 System of 208PbF”, Can .J. Phys. 50, 2206(1972).
  • Onkar N.Singh and O.N. Singh, “Potential energy curve for some excited states of Astral Radical Lao”, J.Sci.Res. (BHU) 19(2).278(1969).
  • Onkar N.Singh and O.N. Singh, “Empirical relation between various spectroscopic constant of diatomic molecule”, J.Sci.Res. (BHU) 19(2).263(1969).
  • Onkar N.Singh and O.N. Singh, “Frank Condon factors and r-Centroids of A-X Systems of PtO and PtC” , J.Sci.Res. (BHU) 19(2).212(1969).