Polymer waveguide thermo-optical switch with loss compensation based on NaYF4: 18% Yb3+, 2% Er3+ nanocrystals<xref rid="cpb_27_11_114218_fn1" ref-type="fn">*</xref><fn id="cpb_27_11_114218_fn1"><label>*</label>Project supported by the National Natural Science Foundation of China (Grant Nos. 61475061 and 61575076).</fn>

Polymer waveguide thermo-optical switch with loss compensation based on NaYF₄: 18% Yb³⁺, 2% Er³⁺ nanocrystals**

Project supported by the National Natural Science Foundation of China (Grant Nos. 61475061 and 61575076).

Xing Gui-Chao, Zhang Mei-Ling, Sun Tong-He, Fu Yue-Wu, Huang Ya-Li, Shao Jian, Liu Jing-Rong, Wang Fei^†, Zhang Da-Ming

(color online) (a) Output pattern of the device, (b) TO switching response curve, (c) relative gain versus pump power for different signal powers, and (d) output optical power versus driving power.