G - Physics – 02 – B
Patent
G - Physics
02
B
88/97.3
G02B 6/38 (2006.01)
Patent
CA 1179538
ABSTRACT OF THE INVENTION A method and arrangement for optically coupling a fiber optic element to the end surface of an optical device utilizing a noncontact type coupling member. The fiber optic element includes an end face for optical coupling to the end surface of the optical device, and has an outer protective coating along a portion of its axial length adjacent the end face of the fiber optic element. The outer diameter of the protective coating at an axial location spaced from the end face of the fiber optic element is of a first dimension. The noncontact type coupling member includes a first support surface for supporting the end face of an optical device in a first predetermined position, and a second support surface for supporting a contact portion of the protective coating of the fiber optic element in a second predetermined position axially spaced from the first predetermined position. The protective coating of the fiber optic element has a shape such that the contact portion thereof defines a surface which has an outer diameter less than the first dimension. Also, a coating is provided on the end face of the fiber optic element so as to substantially cover the end of the core region thereof. Such covering coating has a prede- termined index of refraction which is substantially greater than the index of refraction of the medium between the end face of the fiber optic element and the end surface of the optical device when the fiber optic element and optic device are supported in spaced axial relation- ship,
402774
Macrae & Co.
Thomas & Betts Corporation
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