A Novel Fabrication Technique of Long Period Fiber Gratings Using a Holographic Optical Element |
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Authors: | Atsushi Sugitatsu Hiroyuki Kawano Tatsuo Hatta Kumio Kasahara |
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Affiliation: | (1) Information Technology R #x0026; D Center, Mitsubishi Electric Corp., 4-1, Mizuhara, Itami, Hyogo 664-8641, Japan;(2) Advanced Technology R #x0026; D Center, Mitsubishi Electric Corp., 8-1-1, Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661, Japan |
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Abstract: | We develop a new flexible and precise ultraviolet exposure technique to fabricate a long period fiber grating using a computer-generated holographic optical element (HOE). The HOE can generate a striped beam pattern with about a 300 #x03BC;m period from a KrF excimer laser. This method offers (1) ease in varying the grating period and (2) grating period precision. We achieve a grating period within an accuracy of #x00B1;0.04 #x03BC;m. This means that the peak wavelength can be controlled within an accuracy of #x00B1;0.2nm with an operating wavelength of 1.55 #x03BC;m.This paper was originally presented at the 2nd International Conference on Optical Design and Fabrication, ODF2000 which was held on November 15-17, 2000 at the International Conference Center, Tokyo, Waseda University, Japan. |
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Keywords: | fiber grating long period fiber grating computer-generated hologram holographic optical element excimer laser ultrabiolet exposure |
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