Poling effect of a charge-trapping layer in glass waveguides

Yitao Ren, Carl Johan Marckmann, Rune Shim Jacobsen, Martin Kristensen

Research output: Contribution to journalJournal articleResearchpeer-review


Germanium-doped multi-layer waveguides containing a silicon oxy-nitride layer as a charge trapper are thermally poled in an air environment. Compared to the waveguides without the trapping layer, the induced linear electro-optic coefficient increases more than 20%. A comparable rise in the internal field is found. Our results demonstrate an optimization of the optical nonlinearity by shaping the built-in internal field with the charge-trapping layer.
Original languageEnglish
JournalApplied Physics B
Issue number3-4
Pages (from-to)371-375
Publication statusPublished - 2004

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