A method of and a device for making bragg gratings in optical fibres or waveguides

A method of and a device for making bragg gratings in optical fibres or waveguides

A method and a device are described for the simultaneous fabrication of identical Bragg gratings in different optical fibres or optical waveguides. The fibres/waveguides (1) are mounted side-by-side on a common support (2), along with a phase mask (3), which gives the desired intensity distribution...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ROSSOTTO, ORIANA, BOSCHIS, LAURA, TALLONE, LUIGI
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:A method and a device are described for the simultaneous fabrication of identical Bragg gratings in different optical fibres or optical waveguides. The fibres/waveguides (1) are mounted side-by-side on a common support (2), along with a phase mask (3), which gives the desired intensity distribution to a writing radiation of the grating. Said common support (2) is reciprocated transversally to the longitudinal axis of the fibres or waveguides, at an appropriately low frequency such that each fibre/waveguide is exposed to such a radiation, at each pass under the radiation, for a time sufficient to start a refractive index change.