Polished, fused optical fiber endface

Details Polished, fused optical fiber endface Polished, fused optical fiber endface

G - Physics

02

B

G02B 6/25 (2006.01) B24B 19/22 (2006.01) G02B 6/255 (2006.01) G02B 6/26 (2006.01) G02B 6/42 (2006.01)

Patent

CA 2350533

An endface (118) configuration of an optical fiber (104) has a frustum region (120) which is produced by polishing the endface. In order to produce the optimal rounded tip (124), however, the polished fiber is then fused. To increase coupling efficiency, the vertex angle (.alpha.) of the polished frustum region (120) is acute, preferably between 16 and 20~. Further, to create a hyperbolic endface surface, an intermediate frustum region (122) is preferably polished prior to fusing tip (124). This fused tip (124) preferably has a circular cross-section.

Cette invention se rapporte à une structure de face terminale d'une fibre optique possédant une région tronconique, qui est produite par polissage de la face terminale. Afin de former une pointe arrondie optimale, la fibre ainsi polie est ensuite façonnée par fusion. Pour accroître l'efficacité de couplage, l'angle du sommet de la région tronconique polie est aigu, de préférence entre 16 et 20·. En outre, pour créer une surface de face terminale hyperbolique, une région tronconique intermédiaire est de préférence polie avant la fusion de la pointe. Cette pointe après fusion possède de préférence une section transversale circulaire.

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