Optical coupling device

Details Optical coupling device Optical coupling device

G - Physics

02

B

88/97.5

G02B 6/26 (2006.01) G02B 6/28 (2006.01) G02B 6/42 (2006.01)

Patent

CA 1273834

ABSTRACT OF THE DISCLOSURE An output light beam from a semiconductor laser is converged by a lens system or a fine optical fiber with a small core diameter. The converged light beam is incident upon a part of the light receiving end face of a tapered optical fiber which is greater in area than the other end face thereof which is connected to one end of an optical fiber. The reflected light beam in the multi-mode optical fiber because of discontinuous portion is substantially prevented from returning to the semiconductor laser, so that the adverse effects on the semiconductor laser by the reflected beam can be minimized.

501767

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