Effectively writing low propagation and bend loss waveguides in the silica glass by using a femtosecond laser.
Opt Lett
; 47(18): 4766-4769, 2022 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-36107085
We report writing low-loss waveguides (WGs) by using a femtosecond laser in silica glass. A record low propagation loss of 0.07â
dB/cm is achieved, and the lowest bend loss reaches 0.001â
dB/mm with the bend radius of 30 mm. The optimal effective writing speed reaches 125â
µm/s, which is two orders higher than the previous reported value. Fan-out devices with well controllable low loss for three-dimensional photonic integration are also fabricated. This work provides an effective strategy to create WG devices for 3D high-density photonic integration.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2022
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Article
Pais de publicación:
Estados Unidos