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

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 passb...

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Veröffentlicht in:	IEEE photonics technology letters 2005-01, Vol.17 (1), p.115-117
Hauptverfasser:	Choi, S., Eom, T.J., Jung, Y., Lee, B.H., Lee, J.W., Oh, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Band pass filters Bandpass filters Concatenated codes Core loss Diffraction gratings Fiber gratings Gratings (spectra) Hollow optical fibers (HOFs) Insertion loss long-period fiber gratings (LPGs) Noise levels Optical fiber communication optical fiber communications Optical fiber devices Optical fiber filters Optical fiber sensors Optical fibers Optimization Resonance tunable bandpass filters (BPFs) Tuning
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Beschreibung
Zusammenfassung:	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.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2004.838301