Abstract
We report an Yb/Al-codoped fused silica planar waveguide amplifier with <0.2 dB/cm passive loss and 0.6 dB/cm gain, featuring a high damage threshold (>0.1 GW/cm2) and a relatively large core (20 μm thick). Waveguide fabrication is based on a novel silica-on-silica technology combining modified-chemical-vapor deposition and a high temperature CO2 laser treatment for making high-power photonic devices.
Original language | English |
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Pages (from-to) | 49-54 |
Number of pages | 6 |
Journal | Optical Materials |
Volume | 55 |
DOIs | |
State | Published - May 2016 |
Keywords
- Laser heat treatment
- Optical gain
- Optical transmittance
- Rare-earth doped silica
- Slab waveguide