Method for altering the refractive index of optical fibers...

Details Method for altering the refractive index of optical fibers... Method for altering the refractive index of optical fibers...

G - Physics

02

B

G02B 5/18 (2006.01) C03B 37/10 (2006.01) G02B 6/00 (2006.01) G02B 6/02 (2006.01) G02B 6/10 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2394786

An optical fiber is stressed along its axis with a strain of at least 1 % while light is introduced transversely to write a grating. The strain increases the photosensitivity of the fiber and reduces the time required to write the grating. Alternatively, the fiber can be compressed radially and inwardly, or compressed along its axis.

On soumet, dans le cadre de cette invention, une fibre optique à une contrainte le long de son axe et ce, avec une tension mécanique d'au moins 1 %, tout en faisant passer transversalement de la lumière afin de composer un réseau de diffraction. La tension mécanique accroît la photosensibilité de la fibre et raccourcit le temps nécessaire à l'écriture du réseau de diffraction. Il est possible, dans une variante de l'invention, de comprimer la fibre radialement et vers l'intérieur ou de la compresser le long de son axe.

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