Kyung-Mi Moon

Inha University, Chemulpo, Incheon, South Korea

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Publications (4)3.89 Total impact

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    ABSTRACT: We have designed and integrated a high density micro-ring resonator and photonic crystal waveguide array for wavelength division multiplexing (WDM) microsystem applications. First, we designed and optimized micro-ring resonators. Using the non-unitary transfer matrix method (NU-TM), we have been able to analyze the transfer characteristics of the micro-ring and micro-racetrack resonator system. The track-length dependence, which is not obvious in the unitary transfer method (U-TM) analysis, is clearly found in the NU-TM analysis. By optimizing the WDM filter characteristics such as FSR (Free Spectral Range) and cross-talk, we have found the optimal dimensions, such as length, of the racetrack resonator. And then for improving the WDM filter characteristics of microring resonator, we have designed bent photonic crystal waveguide. Integrating microring resonator with bent photonic crystal waveguide can offer additional functions such as band pass filtering function.
    Proceedings of SPIE - The International Society for Optical Engineering 01/2005; DOI:10.1117/12.592621 · 0.20 Impact Factor
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    ABSTRACT: We present a new approach in the design of a photonic crystal bandpass filter by using waveguide bending. The bandpass filter was designed by introducing two bends with the modified geometry into the both ends of a photonic crystal waveguide. We show that such a filter exhibits step-like spectral profile in the range of 1500-1600 nm, with a maximum transmission of 100%. In contrast to the other designs proposed, the present one does not involve either insertion of small defects or control of cavity-lengths.
    Proceedings of SPIE - The International Society for Optical Engineering 01/2005; DOI:10.1117/12.592676 · 0.20 Impact Factor
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    ABSTRACT: The new power-splitting scheme is proposed in 2-dimensional photonic crystals with a triangular array of air-holes. The power splitting is due to coupling between the localized modes of line-defect waveguides. By finite-difference time-domain computation, the power-splitter is analyzed. The computed frequency spectra show up to 47% transmittance per each output.
    Frontiers in Optics; 10/2004
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    ABSTRACT: We propose a new power-splitting scheme in two-dimensional photonic crystals that can be applicable to photonic integrated circuits. The proposed power-splitting mechanism is analogous to that of conventional three-waveguide directional couplers, utilizing coupling between guided modes supported by line-defect waveguides. Through the analysis of dispersion curve and field patterns of modes, the position in propagation direction, where an input field is split into a two-folded image, is determined by simple mode analysis. Based on the calculated position, a photonic crystal power-splitter is designed and verified by finite-difference timedomain computation.
    Optics Express 08/2004; 12(15):3599-604. DOI:10.1364/OPEX.12.003599 · 3.49 Impact Factor