Optical component with spectral separation
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United States of America Patent
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Feb 26, 2008
Grant Date -
Feb 10, 2005
app pub date -
Oct 1, 2002
filing date -
Oct 1, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to an optical component comprising at least one input monomode fiber (1-4), at least one output monomode fiber (5) and a diffractive element (7) which is disposed between the input fiber or fibers (1-4) and the output fiber or fibers (5). The inventive component is characterized in that at least one of the input or output fibers (1-5) comprises a fiber (1-5) containing a portion (21-25) which is designed to increase the radius of the mode field it guides. According to the invention, the portion which is designed to increase the mode field radius can comprise a portion with a graded index, a portion having a core or cladding refractive index which varies transversely and/or longitudinally.
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