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20 April 2006 Femtosecond inscription of wavelength specific features in optical waveguide structures
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Abstract
Using a femtosecond laser source waveguide, Bragg grating and waveguide-Bragg grating (WBG) structures have been written in fused silica and undoped phosphate glasses. The WBG devices are written using a slit focusing geometry and point-by-point grating inscription method. They demonstrate Bragg reflectivities at the design wavelength (1550 nm) and have been used as a new method for estimating the minimum refractive index change induced during the waveguide writing process.
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Graham D. Marshall, Martin Ams, and Michael J. Withford "Femtosecond inscription of wavelength specific features in optical waveguide structures", Proc. SPIE 6183, Integrated Optics, Silicon Photonics, and Photonic Integrated Circuits, 61830Q (20 April 2006); https://doi.org/10.1117/12.663177
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