Abstract
Method for designing optimized temperature-insensitive optical waveguide couplers by use of fluorinated polyimide is presented. Based on measured temperature and dispersion characteristics of fluorinated polyimide, a 3-dB waveguide coupler with a 120-nm bandwidth with minimal temperature variance is designed and verified through simulation based on three-dimensional beam propagation. The coupling ratio of the theoretical device is 50 ± 0.7% in the waveband 1490 ∼ 1610 nm and the temperature range -10 ∼ 40 °C.
© 2003 Optical Society of America
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