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Design and fabrication of flat-band long-period grating

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6 Author(s)
Zhang, J. ; Network Technol. Res. Center, Nanyang Technol. Univ., Singapore, Singapore ; Shum, P. ; Li, S.Y. ; Ngo, N.Q.
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A method to realize the practical flat-band long-period fiber grating (LPG) fabrication is proposed. Based on the results obtained from the layer-peeling method, we have analyzed the structure of the designed flat-band LPG. We found that the designed LPG is an apodized LPG with sinc-like envelope and a constant period, while there exists a /spl pi/ phase shift at each zero point of the apodization profile. For the first time, a flat-band LPG is realized in fabrication. The experimental result shows a good match with our theoretical analysis.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 11 )

Date of Publication:

Nov. 2003

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