Mass Producible Low-Loss Broadband Optical Waveguides in Eagle2000 by Femtosecond Laser Writing

Optical waveguides were fabricated in alkaline earth boro-aluminosilicate glass, by femtosecond laser direct writing, with varying pulse energy and scan velocity. A spectral characterization, from 500 nm to 1700 nm, was made in order to determine their losses and understand its dependence on the pro...

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Bibliographic Details
Published in:IEEE photonics technology letters 2019-10, Vol.31 (20), p.1658-1661
Main Authors: Amorim, Vitor A., Viveiros, Duarte, Maia, Joao M., Marques, P. V. S.
Format: Article
Language:English
Subjects:
Aluminosilicates
Aluminum silicates
Broadband
Coupling loss
Couplings
Dependence
Direct laser writing
femtosecond laser direct writing
Femtosecond pulsed lasers
integrated optics
low-loss broadband optical waveguides
mass production
Mie scattering
Optical device fabrication
Optical pulses
Optical waveguides
Parameter identification
Process parameters
propagation loss
Propagation losses
Rayleigh scattering
Ultrafast optics
Wave propagation
Waveguide lasers
Wavelengths
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Summary:Optical waveguides were fabricated in alkaline earth boro-aluminosilicate glass, by femtosecond laser direct writing, with varying pulse energy and scan velocity. A spectral characterization, from 500 nm to 1700 nm, was made in order to determine their losses and understand its dependence on the processing parameters. Three major loss mechanisms were identified. At longer wavelengths, loss is mainly due to weak coupling. On the other hand, the behavior at shorter wavelengths is governed by propagation loss due to Rayleigh scattering, which was shown to be practically eliminated (
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2019.2942104