Mode-selective coupler for wavelength multiplexing using LiNbO3:Ti optical waveguides

• Authors: Daniel Runde , Stefan Breuer , Detlef Kip
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

integrated optics devices; lithium niobate; dense-wavelength division multiplexing (DWDM); add-drop multiplexer

Discipline

• 42.79.Gn: Optical waveguides and couplers(for fiber waveguides and waveguides in integrated optics, see 42.81.Qb and 42.82.Et, respectively)
• 42.79.Sz: Optical communication systems, multiplexers, and demultiplexers(for fiber networks, see 42.81.Uv)
• 42.82.Bq: Design and performance testing of integrated-optical systems
• 42.82.Et: Waveguides, couplers, and arrays(for fiber waveguides, see 42.81.Qb)

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2008
• Volume: 6
• Issue: 3
• Pages: 588-592

Dates

published

1 - 9 - 2008

online

17 - 7 - 2008

Contributors

author

Daniel Runde

• Institute of Physics and Physical Technologies, Clausthal University of Technology, Leibnizstr. 4, 38678, Clausthal-Zellerfeld, Germany

author

Stefan Breuer

• Institute of Physics and Physical Technologies, Clausthal University of Technology, Leibnizstr. 4, 38678, Clausthal-Zellerfeld, Germany

author

Detlef Kip

• Institute of Physics and Physical Technologies, Clausthal University of Technology, Leibnizstr. 4, 38678, Clausthal-Zellerfeld, Germany

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Identifiers

DOI

10.2478/s11534-008-0078-1