Analysis of Concatenated Long Period Fiber Gratings Having Phase-Shifted and Cascaded Effects

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概要

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• We propose an accurate model for analyzing phase-shifted and cascaded long period fiber gratings (LPFG) as well as concatenated LPFGs having the characteristics of phase-shifted and cascaded LPFGs. To analyze the concatenated LPFGs with arbitrary wavelength spacing and line width, the coupling between the core mode and multiple cladding modes was considered. In order to obtain an analytical matrix model for the concatenated LPFGs, a multiport lattice filter structure was used. To verify the validity of the proposed model experimentally, we have fabricated two LPFG structures: cascaded LPFGs and concatenated LPFGs with three uniform LPFGs having the characteristics of cascaded LPFGs. We have observed that the transmission spectra calculated using our multiport lattice filter model are close to the corresponding measured spectra in the wavelength band of interest.

• 2003-08-15

著者

• Lee Jong-won

  Electronic Materials And Parts Lab. Korea Institute Of Ceramic Engineering And Technology

• Lee Sang

  Photonics Research Center Korea Institute Of Science And Technology

• Chun Joohwan

  Scientific Computing Laboratory Department Of Electrical Engineering Korea Advanced Institute Of Sci

• Lee Sang

  Photonics Research Center, Korea Institute of Science and Technology, P. O. Box 131, Cheongryang, Seoul 130-650, Korea

• Kim Hoonki

  Scientific Computing Laboratory, Dept. of EECS, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, Yusong-gu, Taejon 305-701, Korea

• Bae Jinho

  Faculty of Marine Industrial Engineering, Cheju National University, 1 Ara 1-dong, Jeju, Jeju-do 690-756, Korea

• Lee Jong-Won

  Electronic Materials and Parts Lab., Korea Institute of Ceramic Engineering and Technology, 233-5 Gasan-dong, Guemcheon-gu, Seoul 153-801, Korea

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