講演情報
[16a-A25-4]Nano-pixel Region Length Dependency in Polarization Rotator
〇(D)Sara Bruhier1, Haisong Jiang1, Kiichi Hamamoto1 (1.I-EggS, Kyushu Univ.)
キーワード：
polarization rotator、breath sensing、integrated photonics
To maintain the vitality of the aging population, infrared sensors in photonic integrated circuits can identify disease markers in breath compounds. Our sensor uses cavity-ring-down spectroscopy and requires a polarization rotator to eliminate unwanted wavelength peaks for detecting gas concentrations in the ppm range. Most existing polarization rotators are currently not integrable yet.
To achieve a polarization extinction ratio over 10 dB required for efficient breath sensing, this manuscript studies the length dependency of a nano-pixel polarization rotator constituted with two regions in regard to its performances: TE and TM converters. Using 3-dimensionals-Finite Difference Time Domain analysis, we achieved a 4.34 μm × 0.96 μm polarization rotation region with 35 dB polarization extinction ratio and 7.5 dB excess loss.
To achieve a polarization extinction ratio over 10 dB required for efficient breath sensing, this manuscript studies the length dependency of a nano-pixel polarization rotator constituted with two regions in regard to its performances: TE and TM converters. Using 3-dimensionals-Finite Difference Time Domain analysis, we achieved a 4.34 μm × 0.96 μm polarization rotation region with 35 dB polarization extinction ratio and 7.5 dB excess loss.
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