Optical waveguides – Optical fiber waveguide with cladding – With graded index core or cladding
Reexamination Certificate
2005-07-05
2005-07-05
Kianni, K. Cyrus (Department: 2883)
Optical waveguides
Optical fiber waveguide with cladding
With graded index core or cladding
C385S123000, C385S125000
Reexamination Certificate
active
06915053
ABSTRACT:
A microstructured optical fiber is structured with a core region and a plurality of cladding regions surrounding the core region. Chromatic dispersion is relatively flat over a broad wavelength range with a small effective area, without need for air holes that are unacceptably small. An enlarged effective core area is obtained by selectively closing the holes in the innermost cladding, which holes are smaller and easier to close than the holes in other regions.
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Kianni K. Cyrus
McDermott Will & Emery LLP
Sumitomo Electric Industries Ltd.
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