STEPANENKO , Oleksandr

The present work aimed to develop and to study a new method of waveguide fabrication, High Index Soft Proton Exchange (HISoPE), which allows realizing highly confining waveguides in LiNbO3 (dne=0.1). Characterizations by localized SHG experiments, showed that the nonlinear properties of the HISoPE waveguides are not destroyed, but modes with...

International audience

We propose a new proton exchange process to reproducibly realize on lithium niobate highly confining (δne = 0.1) planar waveguides without degrading the nonlinear coefficient of the crystal. Waveguides were fabricated with different acidic baths and the crystallographic changes, the index profiles and the local SHG response were measured. We...

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L'intérêt des guides enterrés en optique non linéaire intégrée est connu de longue date, mais la réalisation de guides performants dans des matériaux fortement non linéaire est restée compliquée. Nous présentons ici les premiers résultats encourageants obtenus grâce à une nouvelle technique d'échange protonique sur niobate de lithium.

—We propose a new proton exchange process to repro-ducibly realize on lithium niobate highly confining (δne = 0.1) planar waveguides without degrading the nonlinear coefficient of the crystal. Waveguides were fabricated with different acidic baths and the crystallographic changes, the index profiles and the local SHG response were measured. We...

International audience

International audience

Highly confining nonlinear optical waveguides are extremely interesting for highly efficient and ultracompact nonlinear and/or electro-optical devices. In this paper, we concentrate on correlations between structural and optical properties of channel waveguides on z-cut lithium niobate fabricated using a new waveguide fabrication method, we...

National audience

The proton exchange technique allows fabricating a great variety of waveguides in Lithium Niobate. Recently we discovered that it was possible to realize highly confining waveguides in a controllable manner and without destroying the nonlinear and electro-optic properties of the crystal. With this technique, one can fabricate quantum wires in...

International audience

Using a modified Proton Exchange process we have realized Photonic Wires in X-cut LiNbO3. They exhibit highly confined mode, low propagation losses, low strain induced polarization coupling and no reduction of the nonlinear properties. We are now transferring this technique to Z-cut LiNbO3 in order to realize very efficient nonlinear devices in PPLN.

National audience

Using a modified Proton Exchange process we have realized Photonic Wires in X-cut LiNbO3. They exhibit highly confined mode, low propagation losses, low strain induced polarization coupling and no reduction of the nonlinear properties.

Dans ce papier, nous nous concentrerons sur l'influence des contraintes induites dans le cristal par le processus de fabrication des fils quantiques. Ces tensions sont responsables d'un couplage fort entre les polarisations qui confère une nature hybride aux modes se propageant et qui doit être prise en considération dans la conception des dispositifs.