Fiber type optical component

G - Physics – 02 – B

Patent

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G02B 6/02 (2006.01)

Patent

CA 2396650

A fiber type optical component in which nonuniform increase of refractive index is restricted to a minimum in an optical fiber to which light sensitive material is added to the cladding section and the cladding section of the optical fiber, by forming the optical fiber such that the outermost diameter of the light sensitive layer of the optical fiber is twice as large as the mode field diameter or more, or more preferably 2.5 times as large as the mode field diameter, and by forming slant type optical fiber grating by this optical fiber, it is possible to realize the fiber type optical component in which the bandwidth of transmittance loss is narrow and steep in the reflection restricting angle with filtering ability having large transmittance loss.

Un composant optique de type à fibre dans lequel une augmentation non uniforme d'indice de réfraction est réduite à un minimum dans une fibre optique à laquelle un matériau sensible à la lumière a été ajouté à la section gaine et à la section gaine de la fibre optique, en formant la fibre optique de sorte que le diamètre le plus extérieur de la couche sensible à la lumière de la fibre optique soit deux fois plus grand que le diamètre du champ modal ou plus, ou idéalement 2,5 fois plus grand que le diamètre du champ modal, et en formant un réseau de fibre optique de type incliné au moyen de cette fibre optique, il est possible de réaliser le composant optique de type à fibre dans lequel la largeur de bande de la perte de transmittance est étroite et prononcée dans l'angle limitant la réflexion avec une capacité de filtrage ayant une grande perte de transmittance.

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