Abstract
This paper describes a novel technique for fabricating diffraction grating devices in optical fibers. The diffraction gratings are formed on fibers having a D-shaped cross sectional profile (D-type fibers) produced by Andrew Corporation. It is advantageous to fabricate in-fiber devices since they are smaller than currently available channel waveguide devices, and more compatible with fiber optics technology. The fiber optics communications industry has a pressing need for both passive and active devices which will allow the processing of optical signals without the need of converting them to electrical signals. Among these devices are fiber to fiber couplers, directional couplers, filters, modulators, and wave division multiplexers. Development of a method for fabricating diffraction gratings in optical fibers to perform these functions is an important first step in the creation of such devices.
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