Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-11-13
2007-11-13
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S043000
Reexamination Certificate
active
11183406
ABSTRACT:
The present invention relates to a conical wedge-shaped lensed fiber and the method of making the same. The method comprises: (a) providing an optical fiber having a central axis and an end; (b) machining the end of the optical fiber to form a flat end face; (c) machining the end of the optical fiber to form a conical region; (d) machining one side of the conical region to form a flat first surface; (e) machining another side of the conical region to form a flat third surface, wherein the first surface and the third surface intersect at a intersecting line that is perpendicular to the central axis; and (f) fusing the intersecting line to form a lens. The method has simplified fabricating processes and need not to set up any particular angle of rotation of the fiber. Therefore, the fabricating time and cost are reduced, and the coupling efficiency of the lensed fiber is up to 90%.
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Yeh, Szu-Ming, et al. “A Novel Scheme of Lensed Fiber Employing a Quadrangular-Pyramid-Shaped Fiber Endface for Coupling Between High-Power Laser Diodes and Single-Mode Fibers.”Journal of Lightwave Technologyvol. 22, No. 4 (2004) pp. 1-6.
Yeh, Szu-Ming, et al. “A New Scheme of Conical-Wedge-Shaped Fiber Endface for Coupling Between High-Power Laser Diodes and Single-Mode Fibers.”Journal of Lightwave Technologyvol. 23, No. 4 (2005) pp. 1781-1786.
Cheng Wood-Hi
Yeh Szu-Ming
Chiem Erin D.
Font Frank G.
Ladas & Parry LLP
National Sun Yat-Sen University
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