• Title/Summary/Keyword: B-doped

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An experimental optical cross-connect (광상호분배기 실험 모델)

  • 이성은;윤병호방준학서완식
    • Proceedings of the IEEK Conference
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    • 1998.10a
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    • pp.995-997
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    • 1998

  • The experimental optical cross-connect based on delivery and coupling switch features all-optical property. It consists of erbium-doped fiber amplifiers, arrayedwaveguide gratings, optical switches and optical combiners. In 4 channel wavelength division multiplexing with 1.6 nm spacing, the difference in power level among channels for output signals from the optical cross-connect was within 2 dB.

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Development of PLZTN for Shear Type Accelerometer (전단형 가속도센서에 사용되는 PLZTN 재료 개발)

  • 윤만순;임종인;김선욱;장세주
    • Journal of the Korean Ceramic Society
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    • v.29 no.1
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    • pp.53-59
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    • 1992

  • Piezolectric ceramics of Pb(Zr, Ti)O3 system were fabricated and used for shear type accelerometer. Among compositions studied, La+3 and Nb+5 doped composition showed the highest d15, and K15 and the morphotropic phase boundary (M.P.B) was shifted toward rhombohedral site.

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