Reverse proton exchange for buried waveguides in LiNbO₃

作     者：Korkishko, YN Fedorov, VA Morozova, TM Caccavale, F Gonella, F Segato, F 

作者机构：Engn Univ Dept Chem Moscow Inst Elect Technol Moscow 103498 Zelenograd Russia Ist Nazl Fis Mat I-35131 Padua Italy Univ Padova Dipartimento Fis G Galilei I-35131 Padua Italy 

出 版 物：《JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION》 (J Opt Soc Am A)

年 卷 期：1998年第15卷第7期

页      面：1838-1842页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：Lithium niobate waveguides Mass spectrometry Refractive index Second harmonic generation Single mode fibers Waveguide modes 

摘      要：The reverse proton-exchange (RPE) process performed in different HxLi1-xNbO3 crystalline phases of proton-exchanged and annealed proton-exchanged LiNbO3 waveguides leads to remarkable optical and compositional modifications. Analysis of ordinary and extraordinary index profiles, correlated with concentration depth profiles in RPE samples subjected to different exchange and postexchange treatments, shows how buried-index optical waveguides in LiNbO3 with symmetric mode and reduced fiber-waveguide coupling losses can be realized. (C) 1998 Optical Society of America.