Channel waveguides and Mach-Zehnder structures on RbTiOPO_4 by Cs^+ ion exchange
- 22 April 2015
- journal article
- research article
- Published by Optica Publishing Group in Optical Materials Express
- Vol. 5 (5), 1183-1194
- https://doi.org/10.1364/ome.5.001183
Abstract
Cs+ ion exchange in RbTiOPO4 and (Yb,Nb): RTP/RTP(001) has been used to locally increase the refractive indices for waveguide circuit fabrication. Ti masks were fabricated on RTP samples by conventional photolithography. Cs+ exchange was done using a CsNO3 melt at 698 K during 2 h. Elemental analysis confirms an Cs+ profile with a variable depth. Apparently the Cs+ exchange is disfavored in the doped epitaxial sample. The refractive index variation is higher for n(z) than for n(x,y). Near-field images of the guided modes at 633, 1064 and 1520 nm were recorded. The optical characterization shows propagation losses of 5 dB/cm at 1520 nm. (C) 2015 Optical Society of AmericaFunding Information
- Spanish Government (MAT2011-29255-C02-02, TEC2014-55948-R, MAT2013-47395-C4-4-R/1-R)
- Catalan Authority (2014SGR1358)
- icrea
- Catalan Government
- FI-DGR fellowship (2012FI-B 00192)
This publication has 18 references indexed in Scilit:
- Single-mode rib waveguides in (Yb,Nb) : RbTiOPO4by reactive ion etchingJournal of Physics D: Applied Physics, 2013
- Crystal growth and refined Sellmeier equations over the complete transparency range of RbTiOPO4Optical Materials, 2003
- Potassium Titanyl Phosphate and Its Isomorphs: Growth, Properties, and ApplicationsCritical Reviews in Solid State and Materials Sciences, 1999
- Nonlinear optical properties of the flux grown RbTiOPO4 crystalOptical Materials, 1994
- Proton- and ammonium-exchanged optical waveguides in KTiOPO4Journal of Applied Physics, 1993
- Crystal structures of RbTiOAsO4, KTiO(P0.58,As0.42)O4, RbTiOPO4 and (Rb0.465,K0.535)TiOPO4, and analysis of pseudosymmetry in crystals of the KTiOPO4 familyActa crystallographica Section B, Structural science, crystal engineering and materials, 1992
- Second-harmonic generation in ion-implanted KTiOPO4 planar waveguidesElectronics Letters, 1992
- Balanced phase matching in segmented KTiOPO4 waveguidesApplied Physics Letters, 1990
- Potassium titanyl phosphate: properties and new applicationsJournal of the Optical Society of America B, 1989
- Fabrication and characterization of optical waveguides in KTiOPO4Applied Physics Letters, 1987