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Pulse response and microbending losses of an optical glass-fibre waveguide with a bump in its index profile

Pulse response and microbending losses of an optical glass-fibre waveguide with a bump in its index profile

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It is shown that a short light pulse is split into two separate output pulses when transmitted through a graded-index fibre with a refractive-index bump in its centre. For the fibre investigated, the bump acts as a monomode waveguide. This monomode waveguide turned out to be much less sensitive to microbending than the multimode graded-index waveguide, which is in agreement with existing theories.

References

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      • Olshansky, R.: `Microbending loss of single mode fibers', Communication IV 3, 2nd European conference on optical fibre communication, 1976, Paris.
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      • K. Petermann . Theory of microbending loss in monomode fibres with arbitrary refractive index profile. Arch. Elektron & Ubertragungstech. , 337 - 342
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