Heat-resistant flexible-film optical waveguides from fluorinated polyimides.
Heat-resistant flexible-film optical waveguides from fluorinated polyimides.
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DOI：
10.1364/ao.38.000966
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发表时间：
1999-02
期刊：
影响因子：
1.9
通讯作者：
T. Matsuura;J. Kobayashi;S. Ando;T. Maruno;S. Sasaki;F. Yamamoto
中科院分区：
文献类型：
--
作者：
T. Matsuura;J. Kobayashi;S. Ando;T. Maruno;S. Sasaki;F. Yamamoto
采用氟化聚酰亚胺制备了耐热柔性薄膜光波导。这些波导在单模下工作，在波长为1.3微米的TE和TM偏振下具有低光学损耗（0.3 dB/cm）。它们还具有良好的灵活性：在小于20mm的最小曲率半径以上，光学损耗没有显著变化。TE和TM极化之间的双折射为9 × 10(-5)，比衬底上波导的双折射小2个数量级。此外，这些波导具有较高的热稳定性和抗湿性：在420℃下加热1小时或在85℃下暴露于85%相对湿度下超过350小时后，波导的光损耗和单模行为几乎没有变化。
Heat-resistant flexible-film optical waveguides were fabricated from fluorinated polyimides. These waveguides operated in single mode and had low optical loss (0.3 dB/cm) at a wavelength of 1.3 microm for TE and TM polarizations. They also had good flexibility: The optical loss did not significantly change above a minimum radius of curvature of less than 20 mm. The birefringence of 9 x 10(-5) between the TE and TM polarizations is 2 orders of magnitude smaller than that for a waveguide upon a substrate. Moreover, these waveguides had high thermal stability and moisture resistance: The optical loss and single-mode behavior changed little after heating the waveguides at 420 degrees C for 1 h or after their exposure to 85% relative humidity at 85 degrees C for more than 350 h.