H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/067 (2006.01) G02B 6/024 (2006.01)
Patent
CA 2499089
Apparatus comprising an optical fibre (1) having a waveguide (2) and at least one stress applying region (3): in which the waveguide (2) is defined by a numerical aperture; the stress applying region (3) has a depressed refractive index; the optical fibre (1) is configured such that the waveguide (2) supports at least two polarised fundamental modes, two polarised first second- order modes, and two polarised second second-order modes; the waveguide (2) comprises a gain medium (4); and the stress applying region (3), the waveguide (2)and the disposition of the gain medium (4) are such as to provide preferential guidance to at least one of the modes at an operating wavelength.
L'invention concerne un appareil comprenant une fibre optique (1) comportant un guide d'ondes (2) et au moins une zone d'application de contraintes (3). Ledit guide d'ondes (2) est défini par une ouverture numérique. Ladite zone d'application de contraintes (3) présente un indice de réfraction abaissé. Ladite fibre optique (1) est configurée de sorte que le guide d'ondes (2) supporte au moins deux modes fondamentaux polarisés, deux premiers modes de second ordre polarisés, et deux seconds modes de second ordre polarisés. Ledit guide d'ondes (2) comprend un milieu amplificateur (4). La zone d'application de contraintes (3), le guide d'ondes (2) et la disposition du milieu amplificateur sont tels qu'ils fournissent un guidage préférentiel à au moins un des modes à une longueur d'onde de fonctionnement.
Turner Paul William
Varnham Malcolm Paul
Zervas Mikhail Nicholaos
Norton Rose Or S.e.n.c.r.l.,s.r.l./llp
Southampton Photonics Limited
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