Large-mode-area infrared guiding in ultrafast laser written waveguides in sulfur-based chalcogenide glasses.
Opt Express
; 22(11): 13091-101, 2014 Jun 02.
Article
in En
| MEDLINE
| ID: mdl-24921505
ABSTRACT
Current demands in astrophotonics impose advancing optical functions in infrared domains within embedded refractive index designs. We demonstrate concepts for large-mode-area guiding in ultrafast laser photowritten waveguides in bulk Sulfur-based chalcogenide glasses. If positive index contrasts are weak in As2S3, Ge doping increases the matrix rigidity and allows for high contrast (10(-3)) positive refractive index changes. Guiding with variable mode diameter and large-mode-area light transport is demonstrated up to 10 µm spectral domain using transverse slit-shaped and evanescently-coupled multicore traces.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2014
Document type:
Article