Large numerical aperture bend resistant multimode optical fiber

Details Large numerical aperture bend resistant multimode optical fiber Large numerical aperture bend resistant multimode optical fiber

2011-03-08

2011-03-08

Sanghavi, Hemang (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

With graded index core or cladding

C385S126000

Reexamination Certificate

active

07903918

ABSTRACT:
Bend resistant optical fibers which are multi-moded at 1300 nm include a core, an inner cladding, a low index ring and an outer cladding. The core has a graded index of refraction with a core alpha profile where 1.9≦αC≦2.1, a maximum relative refractive index percent Δ1Max%, and a numerical aperture NA of greater than 0.23. The inner cladding surrounds the core and has a maximum relative refractive index percent Δ2Max%, a minimum relative refractive index percent Δ2Min%, and a radial thickness ≧0.5 microns, wherein Δ1Max%>Δ2Max%. The low index ring surrounds the inner cladding and has a relative refractive index percent Δ3%, a radial thickness of at least 0.5 microns, a profile volume with an absolute magnitude of greater than 50%-μm2, wherein Δ2Min%≧Δ3%. The outer cladding surrounds the low index ring and has a relative refractive index percent Δ4%, such that Δ1Max%>Δ4%≧Δ2Max%.

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