- All silica fibers - Taper with a pigtail of standard fiber
DESCRIPTION Tapered optical fibers are an efficient method of transforming a poor quality laser beam into a spatially uniform spot. An “ideal” laser would have acircular output beam with a linear power distribution across the spot and this would remain constant at varying power levels.
In practise many high powered lasers can have non-circular outputs which can contain local hot spots. In addition the shape of the output beam can vary with varying power and with the lifetime of the laser. These effects can cause loss of power transmission and damage to a conventional fibre if the threhold of damage is exceeded. To ensure maximum efficiency of light transmission, the NA of the light entering the taper input should be 0.22 divided by the taper ratio. If this rule is observed, losses in the taper will be comparable with the UV and IR standard silica fibres.
APPLICATIONS
- Injection efficiency of power laser - Quality of output beam - Monochromators
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- All silica fibers
