Optical Amplification at 1525 nm in BaYF<sub>5</sub>: 20% Yb<sup>3+</sup>, 2% Er<sup>3+</sup> Nanocrystals Doped SU-8 Polymer Waveguide

<table>(a) Spin coating and soft bake. (b) Exposure. (c) Development and postexposure bake. (d) Spin coating top cladding and cure.</table>

Journal of Nanomaterials

Figure 4: Optical Amplification at 1525 nm in BaYF<sub>5</sub>: 20% Yb<sup>3+</sup>, 2% Er<sup>3+</sup> Nanocrystals Doped SU-8 Polymer Waveguide 