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Träfflista för sökning "L773:0733 8724 ;pers:(Anand Srinivasan)"

Sökning: L773:0733 8724 > Anand Srinivasan

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1.
  • de Rossi, S., et al. (författare)
  • Longitudinal mode selection in constricted photonic crystal guides and electrically injected lasers
  • 2005
  • Ingår i: Journal of Lightwave Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 0733-8724 .- 1558-2213. ; 23:3, s. 1363-1368
  • Tidskriftsartikel (refereegranskat)abstract
    • Locally reducing the width of a wide photonic crystal (PhC) waveguide generates a constriction which acts as an internal reflector. We have simulated and measured the spectral behavior of a wide PhC waveguide locally constricted to a narrower PhC waveguide and ended by two cleaved facets, thus generating two coupled cavities. Passive structures as well as electrically injected active structures have been investigated. The multimode behavior of wide PhC waveguides is evidenced to play a deciding role. Modal reflection and transmission at the constriction are simulated and measured on passive PhC waveguides, when varying the constrictions' hole size and length. The spectral behavior of full-PhC electrically pumped lasers including such a constriction is measured and analyzed according to the constriction geometry. Design rules are finally proposed to take advantage of this coupled-cavities behavior for high rejection and high external efficiency monomode laser operation.
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2.
  • Shi, Yaocheng, et al. (författare)
  • Design of a Polarization Insensitive Triplexer Using Directional Couplers Based on Submicron Silicon Rib Waveguides
  • 2009
  • Ingår i: Journal of Lightwave Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 0733-8724 .- 1558-2213. ; 27:11, s. 1443-1447
  • Tidskriftsartikel (refereegranskat)abstract
    • An ultracompact triplexer which could be used for both polarizations is designed by utilizing directional couplers based on submicron silicon rib waveguides. First, the polarization insensitive directional couplers are realized by carefully choosing cross-sectional geometry of the waveguide. The length of the coupling region in the first directional coupler is chosen to separate the three wavelengths ( i.e., 1490 nm to one port, 1310 and 1550 nm to the other port). The second directional coupler separates the wavelengths of 1310 and 1550 nm. For the channel of 1490 nm, an additional directional coupler is used to reduce the crosstalk from the 1310 and 1550 nm channels. The total length of the present triplexer is only 400 and simulation with three-dimensional Beam Propagation Method shows good performances for both polarizations.
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  • Resultat 1-2 av 2
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Anand, Srinivasa... (2)Ta bort avgränsningen
De Rossi, S. (1)
He, Sailing (1)
Talneau, A. (1)
Shi, Yaocheng (1)
Sagnes, I. (1)
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Legratiet, L. (1)
Berrier, A. (1)
Mulot, M. (1)
Gentner, J. L. (1)
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