A short piece of specialty optical fiber acts as the backbone of various fiber-based devices such as high-power laser, amplifier, sensor, etc. suitable for various applications like communication, medical diagnosis, industrial as well as advance basic research. The performance of this specialty optical fiber will depend on the selection of materials, fabrication process technology used, and suitable optimization of various process steps. Accordingly the fabrication of a good quality silica-based specialty fiber doped with suitable dopants in a reliable and repeatable manner is a key challenge from a technological viewpoint and will be briefly discussed.
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