Mode transit times in near-parabolic-index optical fibres
Calculations are presented of the transit times of guided and tunnelling rays in graded-index optical fibres. It is shown that 25% of the power launched by an incoherent source into a parabolic-index fibre is carried by leaky rays, which may increase the r.m.s. width of the impulse response by up to...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
1975.
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| Subjects: | |
| Online Access: | Get fulltext |
| Summary: | Calculations are presented of the transit times of guided and tunnelling rays in graded-index optical fibres. It is shown that 25% of the power launched by an incoherent source into a parabolic-index fibre is carried by leaky rays, which may increase the r.m.s. width of the impulse response by up to 41%. The profile which most effectively equalises the combined transit times of both guided and tunneling rays is given by α = 2-4 Δ |
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