1988-10-24
1989-10-31
Gonzalez, Frank
350 9621, 350 9633, G02B 626
Patent
active
048773000
ABSTRACT:
Disclosed is a mode field modifier which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by first and second cladding layers having refractive indices n.sub.2 and n.sub.3, respectively. In an uptaper-type mode field modifier embodiment, the modifier comprises a modifier core of refractive index n.sub.1 surrounded by a cladding layer having a refractive index n.sub.2. The refractive indices are such that n.sub.1 >n.sub.2 >n.sub.3. In both embodiments, there is a nonadiabatic taper intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.
REFERENCES:
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patent: 4128301 (1978-12-01), Burns et al.
patent: 4678267 (1987-07-01), Burns et al.
patent: 4737004 (1988-04-01), Amitay et al.
patent: 4795228 (1989-01-01), Schneider
patent: 4796968 (1989-01-01), Coccoli et al.
Newhouse Mark A.
Nolan Daniel A.
Weidman David L.
Corning Incorporated
Gonzalez Frank
Simmons, Jr. William J.
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