Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Study on Optical Fiber Filter Allowing Inline Switching Between Transmission and Reflection Spectra in Two Short-Period Fiber Gratings

두 개의 단주기 광섬유 격자에서 투과 및 반사 스펙트럼의 동일 선로 스위칭이 가능한 광섬유 필터에 대한 연구

  • Kim, Jihoon (Pukyong National University, School of Electrical Engineering) ;
  • Lee, Yong Wook (Pukyong National University, School of Electrical Engineering / Pukyong National University, Interdisciplinary Program of Biomedical Mechanical & Electrical Engineering)
  • Received : 2015.11.18
  • Accepted : 2015.12.10
  • Published : 2016.02.28
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Abstract

By incorporating a polarization-diversity loop configuration, we have demonstrated the inline switching of transmission and reflection spectra of one of two short-period fiber gratings (SPFGs) with different resonance wavelengths without reconfiguring the filter structure. The proposed filtering apparatus consists of a fiber-pigtailed polarization beam splitter, two SPFGs, and three quarter-wave plates (QWPs). The proposed filter can independently choose the transmission or reflection spectrum of each SPFG through the appropriate adjustment of the orientation angles of the QWPs within the filter without additional optical switches and couplers. The average insertion loss, band rejection ratio, and side-mode suppression ratio of the fabricated filter were measured as ~4.59, ~17.88, and ~19.67dB, respectively.

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References

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