Design of Tunable Flat-top Bandpass Filter Based on Two Long-period Fiber Gratings and Core Mode Blocker

Title
Design of Tunable Flat-top Bandpass Filter Based on Two Long-period Fiber Gratings and Core Mode Blocker
Authors
배진호배준기이상배
Keywords
bandpass filter; fiber grating; Flat-top bandpass; Long-period fiber gratings; Core mode blocker; Matrix model
Issue Date
2011-06
Publisher
Journal of the Optical Society of Korea
Citation
VOL 15, NO 2, 202-206
Abstract
We propose a tunable flat-top bandpass filter to pass light in a customized wavelength band by using long-period fiber gratings (LPFG) structure. The LPFG structure is composed of a core mode blocker in between two LPFGs. The bandpass spectrum of the proposed structure is obtained in overlapped wavelength band of two LPFGs operating on the same modes. To analyze the properties, we introduce a mathematical matrix model for the structure. We theoretically demonstrate flexibility of the flat-top bandpass filter with various bandwidths.
URI
http://pubs.kist.re.kr/handle/201004/40609
ISSN
1226-4776
Appears in Collections:
KIST Publication > Article
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