| Summary: | 碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 98 === In this thesis, we proposed a method for fabricating D-shaped optical fiber by polishing the surface on the fiber. After, utilizes the photolithography and holographic interference lithography technologies, which fabricated the Bragg surface grating on the D-shaped fiber. Next, we can using micro-molding process to fabricating surface-relief fiber grating by the special material (polydimethysiloxane, PDMS).
During the fabrication, we first make some polishing samples to do side-polished on multi-mode fiber. It would precisely stop polishing until reaching the core of fiber. Next, we conduct to fabricate on diffraction grating filter component through photolithography process and holography interference lithography, and then it utilizes spinner to spin coating and expose the positive photoresist on core of fiber with short periodic Bragg surface grating. Moreover, and utilizes polymer to dissolution the photoresist in microchannel. After the sacrificial layer dissolution of photoresist by polymer, exposes the polymer material. Next, observed and analyzed its optical reactive features.
At last, the aim of the research was to change the material for grating, to fabricate the fiber surface Bragg diffraction grating by micro-molding process. Its period and depth of grating is observed by atomic force microscope (AFM), and the results of optical transmission characteristics are measured and shown by SLD broadband light source and in-line optical fiber polarizer though optical spectrum analyzer(OSA).
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