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- W2041247982 abstract "We report on a novel organic/inorganic hybrid waveguide approach, which is composed of a cladding of extremely low refractive index oxidized porous silicon formed on a bulk silicon substrate and of it, a polymeric (polymethylmethacrylate) core doped with a visible laser dye (Nile-Blue) was deposited by spin coating. The waveguiding properties of the structures have been characterised by means of the m-line technique, demonstrating that the use of oxidized porous silicon as a cladding can considerably improve the mode confinement factor of single-mode waveguides. The low refractive index achievable in the cladding (n=1.16) allows forming waveguides with a low index polymer cores. Variable stripe length (VSL) measurements have been also performed in order to characterise the amplification properties of the waveguides. We demonstrate a clear transition from losses to gain at 694nm with a pump threshold of 28mJ/cm<sup>2</sup>. Values of net optical gain up to 104dB/cm have been measured at this wavelength." @default.
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- W2041247982 date "2007-05-18" @default.
- W2041247982 modified "2023-09-23" @default.
- W2041247982 title "Optical gain in dye-doped polymer waveguides using oxidized porous silicon cladding" @default.
- W2041247982 doi "https://doi.org/10.1117/12.721400" @default.
- W2041247982 hasPublicationYear "2007" @default.
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