Journal of the Optical Society of Korea

  • 제8권1호
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  • Pages.17-20
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  • 2004
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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In-line Variable Attenuator Based on the Evanescent Wave Coupling Between a Side-polished Single-mode Fiber and an Index Matched Dielectric Plate

  • 투고 : 2003.10.09
  • 발행 : 2004.03.01
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초록

An in-line variable attenuator has been proposed and demonstrated exploiting a side-polished single-mode (SM) fiber evanescently coupled with an index matched dielectric plate. The attenuation can be controlled by fine mechanical sliding of the index matched dielectric plate. We have achieved 49 ㏈ dynamic range and very low excess loss of 0.2 ㏈ at 1550 nm wavelength. The measured polarization dependent losses (PDL) were 0.1, 0.2, and 0.4 ㏈ at 10, 20, and 30 ㏈ attenuation, respectively. Wavelength sensitivity was measured to be -0.017/nm ㏈ at 20 ㏈ attenuation.

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참고문헌

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