Apparatus and method for excitation of a single mode in a...

Optical waveguides – With optical coupler – Particular coupling function

Reexamination Certificate

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C385S001000, C385S038000

Reexamination Certificate

active

08045830

ABSTRACT:
A wave-guiding system and method for mode-selective transmission of a spatially coherent light beam is disclosed. The system comprises a wave-guide with an inlet and an outlet for transmitting one or more modes; a first mode-shaping optical element for shaping the spatially coherent light beam before it enters through the inlet of the wave-guide to a desired mode of the wave-guide; and a second mode-shaping optical element for shaping light beam after it exits from the outlet of the wave-guide for obtaining a desired vectorial field.

REFERENCES:
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patent: 2004/0258353 (2004-12-01), Gluckstad et al.
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Temelkuran, B. et al, “Wavelength-Scalable Hollow Optical Fibers with Large Photonic Bandgaps for CO2Laser Transmission”, Nature, 2002, pp. 650-653, vol. 420, Nature Publishing Group.
Hasman, E. et al, “Space-Variant Polarization Manipulation,” Progress in Optics, 2005, pp. 215-289, vol. 47, E.Wolf ed., Elsevier, Netherlands, Amsterdam.
Niv, A. et al, “Propagation-Invariant Vectorial Bessel Beams Obtained By Use of Quantized Pancharatnam-Berry Phase Optical Elements”, Optics Letters, 2004, pp. 238-240, vol. 29, No. 3, Optical Society of America, USA.
Niv, A. et al, “Rotating Vectorial Vortices Produced by Space-Variant Subwavelength Gratings”, Optics Letters, 2005, pp. 2933-2935, vol. 30, No. 21, Optical Society of America, USA.
Mohammed, W.S. et al, “Selective Excitation of the TE01Mode in Hollow-Glass Waveguide Using a Subwavelength Grating”, IEEE Photonics Technology Letters, 2005, pp. 1441-1443, vol. 17, No. 7, IEEE.
Yirmiyahu, Y. et al, “Vectorial Vortex Mode Transformation For a Hollow Waveguide Using Pancharatriam-Berry Phase Optical Elements,” Optics Letters, 2006, pp. 3252-3254, vol. 31, No. 22, Optical Society of America, USA.
International Search Report for International Application No. PCT/IL2007/001063 mailed Jul. 18, 2008.

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