Avanex Corporation

Hedi Labidi

Isabelle Riant

Carlos Luis De Barros

Xavier Bonnet

Jean-Jacques Guerin

Hervé Loury

The present invention relates to the field of optical fiber telecommunications. More specifically, the subject of the invention is a slanted Bragg grating optical fiber and a process for manufacturing such a fiber. The slanted Bragg grating optical fiber of longitudinal axis Z has slanted Bragg gratings photowritten in said fiber and having refractive index modulations along said axis Z, inclined at a same writing angle with respect to a normal plane to said axis Z and defining planes called writing planes forming the same angle than the writing angle with said normal plane, each writing plane forming with others writing planes specific angles called angles of rotation about said axis Z.

Slanted Bragg grating optical fiber and process for manufacturing such a fiber

A tuneable optical fibre comprising a long-period Bragg grating () written in a portion of an optical waveguide () comprising a core and an optical cladding (), characterised in that the portion of the waveguide comprising the grating () is at least partially immersed in an external environment consisting of two distinct sections, a first section () whose refractive index is higher than that of the optical cladding () and a second section () whose refractive index is lower than that of the optical cladding (), the long-period grating being at least partially immersed in one of the said sections so as to almost independently tune the wavelength and/or the contrast of the spectral response of the filter.

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Paris, France

Hedi Labidi