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Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
Bragg mirror inscription on LiNbO3 waveguides by index microstructuration
Richard Ferriere1, Badr-Eddine Benkelfat, John M Dudley
1Franche-Comté Electronique, Mécanique Thermique et Optique-Sciences et Technologies, Laboratoire d'Optique P. M. Duffieux, Unité Mixte de Recherche, Besançon Cedex, France. richard.ferriere@univ-fcomte.fr
Applied Optics
|May 19, 2006
Summary
Researchers developed a new method to create Bragg grating reflectors in lithium niobate waveguides. This technique uses holographic masking and proton exchange for advanced wavelength-selective filters in integrated optics.
Area of Science:
- Integrated optics
- Materials science
- Photonics
Background:
- Dichroic reflectors are crucial for multiwavelength telecommunications, acting as wavelength-selective filters.
- Bragg mirrors offer a promising solution for narrowband and broadband filtering applications.
Purpose of the Study:
- To present a novel fabrication method for Bragg grating reflectors in Ti-indiffused Lithium Niobate (LiNbO3) single-mode waveguides.
- To enable the inscription of waveguides with both periodic and aperiodic distributed parameters for advanced optical filtering.
Main Methods:
- Fabrication of Bragg grating reflectors using holographic masking.
- Integration of holographic masking with proton exchange techniques.
- Direct recording of a photolithographic mask on the substrate via a holographic setup.
Main Results:
- Successful fabrication of Bragg grating reflectors in Ti-indiffused LiNbO3 single-mode waveguides.
- Demonstration of a method enabling control over periodic and aperiodic waveguide parameters.
- Creation of wavelength-selective filters suitable for integrated optics.
Conclusions:
- The described holographic masking and proton exchange method is effective for fabricating Bragg grating reflectors in LiNbO3 waveguides.
- This technique provides a versatile platform for developing advanced wavelength-selective filters for telecommunications and integrated optics.
- The ability to inscribe aperiodic parameters opens new possibilities for optical filter design.
