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Broad-band tunable all-fiber bandpass filter based on hollow optical fiber and long-period grating pair

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6 Author(s)
S. Choi ; LG Electron. PRC, Kyunggi-Do, South Korea ; T. J. Eom ; Y. Jung ; B. H. Lee
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We report a tunable all-fiber bandpass filter based on a short hollow optical fiber serially concatenated between a pair of long-period fiber gratings. With novel core mode blocking in the hollow core fiber and its optimal design, the device showed a low insertion loss of 1.5 dB and broad-band passband tuning range of 84.3 nm covering both S- and C-band.

Published in:

IEEE Photonics Technology Letters  (Volume:17 ,  Issue: 1 )