An effective method for coupling single-mode fiber to thin-filmwaveguide |
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Authors: | Cai Y Mizumoto T Ikegami E Naito Y |
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Institution: | Fac. of Eng., Tokyo Inst. of Technol.; |
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Abstract: | An effective method for coupling optical signals from single-mode fibers to thin-film waveguides is proposed. The authors show that this method provides high coupling efficiency for connecting fibers of different core diameters to thin-film waveguides of different film thicknesses or refractive indexes. The authors summarize the theoretical treatment of the coupler. Examples of couplers designed for SiO2 -based materials as well as iron garnets are presented. Fabrication of the proposed coupler and its experimental results are described |
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