Step-changed long-period fiber gratings

The spectral characteristics of a new type of long-period grating (LPG) structure, step-changed LPG, are investigated theoretically and experimentally. It is shown that the spectral profile of such gratings can be tailored by adjusting the step parameters. A good agreement between simulated results...

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Bibliographic Details
Published in:IEEE photonics technology letters 2002-05, Vol.14 (5), p.657-659
Main Authors: Bai-Ou Guan, A-Ping Zhang, Hwa-Yaw Tam, Chan, H.L.W., Chung-Loong Choy, Xiao-Ming Tao, Demokan, M.S.
Format: Article
Language:English
Subjects:
Attenuation
Coupled mode analysis
Diffraction gratings
Equations
Erbium-doped fiber amplifier
Fiber gratings
Fibers
Flattening
Gain
Gratings (spectra)
Interference
LPG
Optical attenuators
Optical coupling
Optical fiber filters
Optical fibers
Simulation
Spectra
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Description
Summary:The spectral characteristics of a new type of long-period grating (LPG) structure, step-changed LPG, are investigated theoretically and experimentally. It is shown that the spectral profile of such gratings can be tailored by adjusting the step parameters. A good agreement between simulated results and measured spectra is obtained. This type of LPG has potential applications in gain flattening of erbium-doped fiber amplifiers.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.998716