XING Gui-chao, HUANG Ya-li, ZHANG Mei-ling etc. Effect of Fabrication Technology of Polymer Optical Waveguide Amplifier Based on NaYF<sub>4</sub>:Er<sup>3+</sup>,Yb<sup>3+</sup> Nanocrystals on Device Performance[J]. Chinese Journal of Luminescence, 2018,39(5): 681-686
XING Gui-chao, HUANG Ya-li, ZHANG Mei-ling etc. Effect of Fabrication Technology of Polymer Optical Waveguide Amplifier Based on NaYF<sub>4</sub>:Er<sup>3+</sup>,Yb<sup>3+</sup> Nanocrystals on Device Performance[J]. Chinese Journal of Luminescence, 2018,39(5): 681-686 DOI: 10.3788/fgxb20183905.0681.
nanocrystals were synthesized and the morphology of nanocrystals was characterized. The nanocrystals were doped into SU-8 as the core material of the optical waveguide amplifier by physical doping method. The size of the waveguide amplifier was optimized. Polymer optical waveguide amplifiers were fabricated on a silica substrate by spin coating
photolithography and ICP etching. In the experiment
the optical waveguide amplifier was prepared by two methods:light bleaching and wet etching. The amplification characteristics of the devices prepared by the two methods are tested. The amplifier prepared using the wet etching method achieves a relative gain of 2.7 dB at 1 550 nm when the pump power is 241 mW and the signal light power is 0.1 mW. The amplifier prepared using the photobleaching method obtains a relative gain of 4.5 dB at 1 550 nm for 235 mW pump power and 0.1 mW signal power. Based on the above test results
the effects of the two processes on the device performance were analyzed.
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