Femtosecond laser-written double line waveguides in germanate and tellurite glasses

Diego S. da Silva; Niklaus U. Wetter; Wagner de Rossi; Ricardo E. Samad; Luciana R. P. Kassab

doi:10.1117/12.2291223

16 February 2018 Femtosecond laser-written double line waveguides in germanate and tellurite glasses

Diego S. da Silva, Niklaus U. Wetter, Wagner de Rossi, Ricardo E. Samad, Luciana R. P. Kassab

Proceedings Volume 10519, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIII; 105191B (2018) https://doi.org/10.1117/12.2291223
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

The authors report the fabrication and characterization of passive waveguides in GeO₂–PbO and TeO₂–ZnO glasses written with a femtosecond laser delivering pulses with 3μJ, 30μJ and 80fs at 4kHz repetition rate. Permanent refractive index change at the focus of the laser beam was obtained and waveguides were formed by two closely spaced laser written lines, where the light guiding occurs between them. The refractive index change at 632 nm is around 10^-4 . The value of the propagation losses was around 2.0 dB/cm. The output mode profiles indicate multimodal guiding behavior. Raman measurements show structural modification of the glassy network. The results show that these materials are potential candidates for passive waveguides applications as low-loss optical components.

Citation Download Citation

Diego S. da Silva, Niklaus U. Wetter, Wagner de Rossi, Ricardo E. Samad, and Luciana R. P. Kassab "Femtosecond laser-written double line waveguides in germanate and tellurite glasses", Proc. SPIE 10519, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIII, 105191B (16 February 2018); https://doi.org/10.1117/12.2291223

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