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IEICE Electronics Express
Vol. 3 (2006) No. 22 P 469-473




A polarization-maintained ultranarrow FBG filter with a linewidth of 1.3GHz has been successfully fabricated by using a 15cm-long phase mask. A maximum reflectance of 65% and a side lobe suppression of 13dB were obtained by employing an apodization technique with slits.

Copyright © 2006 by The Institute of Electronics, Information and Communication Engineers

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