Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Loss improvement of star couplers and arrayed waveguide grating wavelength filter

성형결합기 및 광도파로열 격자 파장 필터 손실특성 개선

  • 박준오 (광운대학교 전자공학부/전자통신공학과) ;
  • 정영철 (광운대학교 전자공학부/전자통신공학과) ;
  • 백수현 ((주)피피아이) ;
  • 이형종 ((주)피피아이)
  • Published : 2002.02.01
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Abstract

In the conventional star coupler, a certain amount of loss should be expected because lateral diffraction is used for the power distribution. In this paper, we propose a new design of a low loss star coupler which employs UV-written tapered waveguides and an AWG based on the low loss star couplers, and investigate their various characteristics. The loss of the UV-written star coupler is lower than that of the conventional star coupler, and the AWG device based on the UV-written star couplers shows low loss characteristics.

기존의 성형결합기는 광파가 자유전파영역에서 회절에 의해 전파되는 사실이 잘 알려져 있다. 본 논문에서는 손실을 줄이기 위하여 회절에 의한 광파의 전파가 아닌 W-테이퍼 도파로에 의한 광파의 전파를 하는 새로운 개념의 성형결합기를 제안하였고, 이를 광도파로열 격자 파장 필터에 적용시켜 여러 가지 특성을 조사하였다. 새로운 개념의 저 손실 성형결합기 및 이를 이용한 광도파로열 격자 파장 필터는 기존의 성혈결합기 및 광토파로열 격자 파장 필터와 같은 성능을 나타내면서도 손실이 작음을 확인하였다.

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References

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