Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Fabrication of gratings in Planar Lightwave Circuits for External Cavity Laser

외부 공진기 레이저 구현을 위한 평면도파로 격자 제작

  • Lim, Jong-Hoon (School of Information and Communications Engineering, SungKyunKwan University) ;
  • Lim, Gun (School of Information and Communications Engineering, SungKyunKwan University) ;
  • Lee, Kyung-Shik (School of Information and Communications Engineering, SungKyunKwan University) ;
  • Song, Jeong-Hwan (Network Research Team, Telecomm R&D Center, Samsung Electronics) ;
  • Cho, Jae-Geol (Network Research Team, Telecomm R&D Center, Samsung Electronics) ;
  • Jung, Sun-Tae (Network Research Team, Telecomm R&D Center, Samsung Electronics) ;
  • Oh, Yun-Kyung (Network Research Team, Telecomm R&D Center, Samsung Electronics)
  • 임종훈 (성균관대학교 정보통신공학부 광통신연구실) ;
  • 임군 (성균관대학교 정보통신공학부 광통신연구실) ;
  • 이경식 (성균관대학교 정보통신공학부 광통신연구실) ;
  • 송정환 (삼성전자 정보통신총괄 통신연구소 광소자 Lab) ;
  • 조재걸 (삼성전자 정보통신총괄 통신연구소 광소자 Lab) ;
  • 정선태 (삼성전자 정보통신총괄 통신연구소 광소자 Lab) ;
  • 오윤경 (삼성전자 정보통신총괄 통신연구소 광소자 Lab)
  • Published : 2004.12.01
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Abstract

Bragg gratings were fabricated in Ge-doped silica planar lightwave circuits (PLC) for different writing conditions to study the growth characteristics. The refractive index modulation of the gratings grew in the PLC with total fluence F according to the power law $\Delta$n=A $F^{B}$. The characteristics of the PLC gratings formed for external cavity lasers match closely to those predicted by the power law. The oscillation spectra of the FP-LD with a Bragg grating grown in the PLC waveguide were also presented.d.

평면도파로 (Planar Lightwave Circuits)를 수소처리한 후 격자를 제작하였다. 성장특성 분석 결과 격자는 거듭제곱식 (power law)에 따라서 성장되는 것을 알 수 있었다. 격자의 성장특성을 이용하여 외부 공진기 레이저용 평면도파로 격자를 설계하고 제작한 결과 예상치와 거의 일치하는 격자특성을 얻을 수 있었고, 제작된 격자로 구현된 외부 공진기 레이저에서 ∼40dB의 인접모드억압비(side mode suppression ratio)를 갖는 단일모드 발진을 관측할 수 있었다.

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References

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