Lu, Gd codoped $KY(WO_{4})_{2}$ : Yb epitaxial layers: Towards integrated optics based on $KY(WO_{4})_{2}$

Gardillou, Florent and Romanyuk, Yaroslav E. and Borca, Camelia N. and Salathé, René-Paul and Pollnau, Markus (2007) Lu, Gd codoped $KY(WO_{4})_{2}$ : Yb epitaxial layers: Towards integrated optics based on $KY(WO_{4})_{2}$ . Optics Letters, 32 (5). pp. 488-490. ISSN 0146-9592

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Abstract:	Codoping $KY(WO_{4})_{2}:Yb$ layers with optically inert Lu and Gd ions allows a large increase of the refractive index contrast with respect to $KY(WO_{4})_{2}$ substrates. This paves the way for the realization of integrated optical circuits based on this very promising material. First riblike waveguide structures have been fabricated and propagation losses below 1 dB/cm have been evaluated. A Y-junction with a splitting ratio close to 1:1 and additional losses of 1.4 dB has also been demonstrated.
Item Type:	Article
Copyright:	© 2007 Optical Society of America
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Integrated Optical MicroSystems (IOMS)
Link to this item:	http://purl.utwente.nl/publications/61937
Official URL:	http://dx.doi.org/10.1364/OL.32.000488
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Lu, Gd codoped : Yb epitaxial layers: Towards integrated optics based on

Lu, Gd codoped $KY(WO_{4})_{2}$ : Yb epitaxial layers: Towards integrated optics based on $KY(WO_{4})_{2}$