Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Patent
1994-07-29
1996-05-07
Lee, John D.
Optical waveguides
With disengagable mechanical connector
Optical fiber to a nonfiber optical device connector
385 93, G02B 642
Patent
active
055154697
ABSTRACT:
A fiber optic RF signal distribution system has a plurality of antenna stations, each station including an RF antenna. A central RF signal distribution hub receives and transmits signals external to the system. A pair of optical fibers connects each antenna station directly to the distribution hub with the connections being in a star configuration. A connectorized laser module permits direct coupling of a distributed feedback semiconductor laser to the end of each optical fiber without an intervening connector. The module accepts an APC connector with the angled end of its optical fiber in an aperture plane in a connector housing. A distributed feedback laser is mounted in the connector housing with a lens for illuminating the aperture plane and hence, the end of the fiber at an acute angle to the axis of the fiber. Furthermore, the illumination is defocused at the aperture plane for loose optical coupling to the fiber and minimized reflection to the DFB laser.
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B. Hillerich, "Trade-Off Between Beam Truncation and Defocussing With Taper Lenses on Single-Mode Fibers," Optics Communications, vol. 68, No. 3, Oct. 1, 1988, pp. 183-186.
M. Shibutani et al., "Reflection Induced Degradations in Optical Fiber Feeder for Microcellular Mobile Radio Systems," IEICE Transactions on Electronics, vol. E76-C, No. 2, Feb., 1993, pp. 287-292.
Blauvelt Henry A.
Ury Israel
Yeh Xian L.
Zarem Harold A.
Lee John D.
Ortel Corporation
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