Anatomy of a femtosecond laser processed silica waveguide [Invited]

Publication Type:
Journal Article
Citation:
Optical Materials Express, 2011, 1 (5), pp. 998 - 1008
Issue Date:
2011-09-01
Full metadata record
Files in This Item:
Filename Description Size
jc.pdfPublished Version969.83 kB
Adobe PDF
Waveguides are inscribed through densification of the surrounding region of a damage induced channel created by femtosecond irradiation within silica. Single mode propagation at 1.5 μm is obtained below the damage region whilst at shorter wavelengths guidance is only observed away on either side of the region. The quasi-periodic nanostructure that is induced can explain the mode profile elongation observed with polarised light at 45°. The origin of this guidance area is explored using SEM analysis, which reveals nanoporous regions within laser track structure above and below the densified region where 1.5 μm propagates. Shorter wavelength light is not supported in this area. © 2011 Optical Society of America.
Please use this identifier to cite or link to this item: