Fiber optic attenuation systems, methods of fabrication thereof and methods of attenuation using the same
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United States of America Patent
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Apr 9, 2002
Issued Date -
N/A
app pub date -
Apr 11, 2000
filing date -
Feb 20, 1998
priority date (Note) -
Expired
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Abstract
Controllable fiber optic attenuators and attenuation systems (100) are disclosed for controllably extracting optical energy from a fiber optic (30), and therefore attenuating the optical signal being transmitted through the fiber optic (30). In one aspect, material is removed from a portion of the optical fiber (30), thereby exposing a surface through which optical energy can be extracted. A controllable material is formed over the surface for controllably extracting optical energy according to a changeable stimulus applied thereto, which affects the refractive index thereof. In an improved embodiment, a controllable material is formed over the exposed surface for controlling the amount of optical energy extracted from the fiber optic, and a bulk material is formed over the controllable material, into which the extracted optical energy is radiated.
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