Optical waveguide writing inside Foturan glass with femtosecond laser pulses |
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Authors: | R An Y Li D Liu Y Dou F Qi H Yang Q Gong |
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Institution: | (1) State Key Laboratory for Mesoscopic Physics & Department of Physics, Peking University, Beijing, 100871, P.R. China |
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Abstract: | We investigated the femtosecond laser writing of optical waveguides inside Foturan glass at various pulse energies and focusing
depths. An optimal waveguide fabricated solely by femtosecond laser irradiation showed a refractive index modulation of ∼1.7×10-3 and a minimum transmission loss of ∼0.80 dB/cm. This type of waveguide had lower transmission loss than those fabricated
by a hybrid process of femtosecond laser exposure and following thermal treatment. An optical splitter was also fabricated
at high pulse energy.
PACS 42.65.Re; 42.82.Et; 42.70.Gi |
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Keywords: | |
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