Long-period cascaded fiber taper filters.
Appl Opt
; 53(5): 944-50, 2014 Feb 10.
Article
em En
| MEDLINE
| ID: mdl-24663276
ABSTRACT
Fiber filters based on periodic cascaded tapered fiber sections are demonstrated. The filters consist of up to seven tapered sections separated periodically by more than 3 mm from center to center, with nominal tapered sections of 1 mm×1 mm×1 mm longitudinal dimensions. The transmission spectrum consists of discrete notches, resembling those observed in long-period fiber gratings, which differs from the observed spectrum in Mach-Zender interferometers based on cascaded tapers. Its sensitivity to external perturbations, such as refractive index or mechanical stress, made the device potentially very useful as a sensor or tunable filter.
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MEDLINE
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En
Ano de publicação:
2014
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Article