고굴절률 불화폴리이미드를 이용한 광도파로 위상변조기 제작 및 특성 분석
Optical-waveguide Phase Modulators Based on High-refractive-index Fluorinated Polyimide
한국광학회지 Vol. 32 No.4 (2021 August) pp. 180-186
Fig. 1 Waveguide design using effective index method. (a) Rib structure waveguide cross-section. (b) Effective index calculation procedure. (c) Effective index calculation results with varying thickness of the waveguide. (d) Effective index calculation results with varying width of the waveguide. (e) TE, and (f) TM mode profiles.
불화폴리이미드는 우수한 광투과율과 광학적 굴절률이 높은 특징을 가지며 이를 이용하여 제작된 폴리머 광도파로 위상변조기는 광손실이 작고 저전력으로 안정적인 위상제어가 가능하게 된다. 본 논문에서는 고굴절률 불화폴리이미드를 이용하여 광도파로 위상변조기를 설계하고 제작하여 특성을 분석하였다. 광도파로를 제작하여 손실을 측정하기에 효율적인 새로운 방법을 제시하였고, 제작된 폴리이미드 광도파로의 전파손실은 0.9 dB/cm로 확인되었다. 위상변조기는 π 위상변화를 위해 9.1 mW의 전력을 필요로 하였으며, 기존 폴리머 위상변조기 대비 응답 속도가 10배 정도 향상된 290 μs 정도의 응답시간을 가지는 것을 확인하였다.
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본 방침은 : 2021 년 4 월 8 일 부터 시행됩니다.
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한국광학회는 정보통신망법제 50조의 2, 제50조의 7 등에 의거하여, 한국광학회는 가운영, 관리하는 웹페이지 상에서 이메일 주소 수집 프로그램이나 그 밖의 기술적 장치 등을 이용하여 이메일 주소를 무단으로 수집하는 행위를 거부합니다.
이 약관은 한국광학회 (이하 “한국광학회"라 합니다) 홈페이지가 제공하는 통합회원 서비스(이하 "서비스"라 합니다)를 이용함에 있어 이용자와 한국광학회 간의 권리•의무 및 책임사항과 기타 필요한 사항을 규정함을 목적으로 합니다.
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(시행일) 이 약관은 2021년 4 월 8 일부터 적용합니다.