Reflection losses from imperfectly broken fiber ends.
This paper presents an approximate theory for determining the reflection losses in multimode fibers that terminate in end surfaces that are not strictly perpendicular to the fiber axis. This theory is also applicable to tilts and covers step index as well as parabolic index fibers. The cross section of the step index fiber is assumed to have square geometry. This assumption simplifies the theory and is not expected to influ-ence the obtained results.
Marcuse
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