Abstract
Micron-scale radiative taps can be made on optical fibers by etching a cut on the cladding using the CO2 laser ablative chemical etching process. Such taps can be used for making varieties of optical signal processors, fiber optic sensors and communication networks. The propagation of the optical fields along the fiber and their scattering at the discontinuity introduced by the tap are simulated using the finite-difference time-domain technique. The change in the radiated fields are studied for various values of tap shapes and tap sizes. The optical field visualization package is of great help in designing a tap for an application that requires a radiated beam of a specific pattern and a given amount of radiated power.
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