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Comparison of finite-element method with variational analytical methods for planar guiding structures

✍ Scribed by I. Huynen; Z. Raida

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
170 KB
Volume
18
Category
Article
ISSN
0895-2477

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✦ Synopsis

Figure 5 Surface profile of the sidewall on the ridge waveguide in z-cut Ni:NbO 3

Conclusions

In conclusion, the wet-etching technique was successfully used to evaluate the effects of nickel indiffusion on the PE depth under different diffusion parameters. It was also found that the PE depth became smaller with the existence of Ni atoms. Furthermore, the effect of suppression is more pronounced under a higher Ni concentration. While this result was applied to waveguide fabrication, a ridge waveguide with more vertical sidewalls was obtained. These results should be of great interest in the fabrication of LiNbO ridge wave-3 guide modulators.

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