Abstract
We report single scan transverse writing of depressed cladding waveguides inside ZBLAN glass with the longitudinally oriented annular ring-shaped focal intensity distribution of the femtosecond laser. The entire region of depressed cladding at the cross section, where a negative change of refraction index is induced, can be modified simultaneously with the ring-shaped focal intensity profile. The fabricated waveguides exhibit good single guided mode.
| Original language | English |
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| Pages (from-to) | 13263-13270 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 25 |
| Issue number | 12 |
| DOIs | |
| State | Published - 12 Jun 2017 |
| Externally published | Yes |