Heat-resistant flexible-film optical waveguides from fluorinated polyimides
| Autor: | Tohru Maruno, Shinji Ando, Kobayashi Junya, Fumio Yamamoto, Tohru Matsuura, Shigekuni Sasaki |
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| Rok vydání: | 2008 |
| Předmět: |
Birefringence
Materials science business.industry Orders of magnitude (temperature) Materials Science (miscellaneous) Single-mode optical fiber Substrate (electronics) Waveguide (optics) Industrial and Manufacturing Engineering Wavelength Optics Optoelectronics Thermal stability Business and International Management business Refractive index |
| Zdroj: | Applied optics. 38(6) |
| ISSN: | 1559-128X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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