Fiber-to-fiber Total Insertion Loss가 <6d8인 Ti:LiNbO$_3$ 광도파로 Pigtailing 및 도파모드특성

  • 김성구 (전자부품종합기술연구소) ;
  • 윤형도 (전자부품종합기술연구소) ;
  • 임영민 (전자부품종합기술연구소) ;
  • 윤대원 (전자부품종합기술연구소) ;
  • 한상필 (전자부품종합기술연구소)
  • Published : 1997.11.01

Abstract

A low loss x-cut LiNbO$_3$ optical waveguide was fabricated by Ti in-diffusion and the guided-mode properties and total insertion loss of pigtailing with polarization maintaining fiber(PMF) were investigated and measured at optical wavelength 15507. For formaing the waveguide, the parameters of diffusion Ti thickness, waveguide line-width, length, diffusion temperature, time and atmosphere were set 1400$\AA$, 8${\mu}{\textrm}{m}$, 3.3cm, 105$0^{\circ}C$, 8 hours and wet bubbled oxygen, respectively. and then After the polishing and pigtailing, it showed that total insertion loss was -4.1dB for TM mode, -5.5dB for TE mode, and mode size, that is, horizontal/vertical sizes were 13.87/18${\mu}{\textrm}{m}$ for TM mode, 9.61${\mu}{\textrm}{m}$/6.5${\mu}{\textrm}{m}$ for TE mode.

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