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

LG Electron. PRC, Kyunggi-Do, South Korea
IEEE Photonics Technology Letters (Impact Factor: 2.18). 02/2005; DOI: 10.1109/LPT.2004.838301
Source: IEEE Xplore

ABSTRACT 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.

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