| Summary: | 碩士 === 國立交通大學 === 電子工程系所 === 94 === In this research, we investigate the design and fabrication of ARROW-based coherently coupled bending waveguides. The effective index method and the transfer matrix method are used to design ridge ARROW waveguides and to analyze their characterization. Furthermore, the beam propagation method is used to design the coupling length and to simulate the characterization of coherently coupled bending waveguides. When the width and etching depth are 4 μm and 0.12 μm, the propagation losses of two kinds of fundamental modes are 0.1673 dB/cm (TM) and 4.3448 dB/cm (TM), respectively. The suitable total bending angles were used to shift the propagation light by 500 μm. Total bending angles 4.8∘and 8∘were chosen. The waveguide bending trasnmissions of two kinds of bending angles for TE modes are 1.16 and 1.49 dB, and those of TM modes are 1.09 and 1.32 dB, respectively. Finally, the measured propagation losses of ARROW’s structure are about two times larger than simulation values, and the measured waveguide bending transmission efficiencies were measured about 60% of simulation values.
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