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Fibre optic wavelength channel selector with high resolution

Fibre optic wavelength channel selector with high resolution

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© The Institution of Electrical Engineers
Published

The coupling of optical power between a fibre, side polished close to the core, and a planar multimode waveguide overlay is highly wavelength selective. Vacuum deposited films and polished lithium niobate have been used in the role of the overlay and a wavelength resolution of 3nm (with subnanometre feasibility) has been demonstrated with losses of less than 0.2dB. Electro-optic tunability in the region of a few nanometres was also observed for the lithium niobate devices.

Inspec keywords: optical communication equipment; optical fibres; optical couplers; frequency division multiplexing; integrated optics; lithium compounds

Other keywords: planar multimode waveguide overlay; wavelength selective; resolution; fibre optic wavelength channel selector; wavelength resolution; optical power; LiNbO3; electro-optic tunability

Subjects: Integrated optics; Fibre optics; Optical communication

References

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      • C.A. Millar , M.C. Brierley , S.R. Mallinson . Exposed core single mode fibre channel dropping filter using a high indexoverlay waveguide. Opt. Lett. , 4 , 284 - 286
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      • H.C. Lefévre . Single mode fractional wave devices and polarisation controllers. Electron. Lett. , 778 - 780
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