Title: Mode-selective coupler for wavelength multiplexing using LiNbO₃:Ti optical waveguides
Authors: Runde, Daniel
Breuer, Stefan
Kip, Detlef  
Language: en
Subject (DDC): DDC::500 Naturwissenschaften und Mathematik
Issue Date: Sep-2008
Publisher: Central European Science Journals
Document Type: Article
Journal / Series / Working Paper (HSU): Central European journal of physics : CEJP 
Volume: 6
Issue: 3
Page Start: 588
Page End: 592
Publisher Place: Warsaw
Abstract: 
A mode-selective directional coupler based on titanium in-diffused channel waveguides in lithium niobate is investigated. This coupler may be utilized as a key part of an add-drop multiplexer for dense wavelength division multiplexing in optical network nodes. The proposed coupler is based on evanescent coupling of the fundamental mode of a single-mode channel to the first higher mode of a parallel bi-modal waveguide. Our experimental results show that a compact directional coupler with coupling efficiencies larger than 90%, large bandwidth around 1550 nm, and with negligible polarization dependence can be realized using electro-optic lithium niobate substrates. © Versita Warsaw and Springer-Verlag Berlin Heidelberg 2008.
Organization Units (connected with the publication): Technische Universität Clausthal
URL: https://api.elsevier.com/content/abstract/scopus_id/48349094071
ISSN: 18951082
DOI: 10.2478/s11534-008-0078-1
Appears in Collections:Publications of the HSU Researchers (before HSU)

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