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Título
Y-junctions based on circular depressed-cladding waveguides fabricated with femtosecond pulses in Nd:YAG crystal: A route to integrate complex photonic circuits in crystals
Autor(es)
Materia
Laser materials processing
Waveguides channeled
Integrated photonic devices
Crystalline materials
Fecha de publicación
2017-10
Citación
Ajates, J. G., Romero, C., Castillo, G. R., Chen, F., & Vázquez de Aldana, J. R. (2017). Y-junctions based on circular depressed-cladding waveguides fabricated with femtosecond pulses in Nd:YAG crystal: A route to integrate complex photonic circuits in crystals. Optical Materials, 72, 220-225. https://doi.org/10.1016/j.optmat.2017.06.014
Resumen
e have designed and fabricated photonic structures such as, Y-junctions (one of the basic building blocks for construction any integrated photonic devices) and Mach-Zehnder interferometers, based on circular depressed-cladding waveguides by direct femtosecond laser irradiation in Nd:YAG crystal. The waveguides were optically characterized at 633 nm, showing nearly mono-modal behaviour for the selected waveguide radius (9 μm). The effect of the splitting angle in the Y structures was investigated finding a good preservation of the modal profiles up to more than 2°, with 1 dB of additional losses in comparison with straight waveguides. The dependence with polarization of these splitters keeps in a reasonable low level. Our designs pave the way for the fabrication of arbitrarily complex 3D photonic circuits in crystals with cladding waveguides.
URI
ISSN
0925-3467
DOI
10.1016/j.optmat.2017.06.014
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- ALF. Artículos [297]
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