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Wavelength sensitivity in directional couplers

By: Mickelson, A.R.; Feuerstein, R.J.; Januar, I.; Sauer, J.R.;

1992 / IEEE

Description

This item was taken from the IEEE Periodical ' Wavelength sensitivity in directional couplers ' Measured and calculated crosstalk ratios as a function of wavelength are compared for proton exchanged and annealed LiNbO/sub 3/ directional couplers at lambda =1550 nm. The analytical technique employed models the experimentally determined wavelength sensitivities reasonably well. The analytical technique is further used to predict comparable functions for titanium indiffused couplers, and these results are compared to other calculations taken from the literature. No significant difference in sensitivity is noted between the two waveguide forming techniques.<>