Open AccessA novel design methodology for superstructure fiber Bragg grating comb-filter
Author(s) -
Hui Cao,
Junqiang Sun,
Chi Zhang,
Xiao Ling-Yan,
Dexiu Huang
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.3077
Subject(s) - fiber bragg grating , optics , materials science , grating , chirp , wavelength division multiplexing , superstructure , ripple , channel spacing , bandwidth (computing) , optical filter , laser , wavelength , optoelectronics , computer science , telecommunications , physics , thermodynamics , quantum mechanics , voltage
A novel superstructure fiber Bragg grating (SFBG) combfilter for multiwavele ngth laser is proposed. This SFBG is characterized by its singlegrating struct ure, both refractive index modulation and local chirp abundant in variation, sym metri cal reflection peaks, narrow bandwidth and standard channel spacing. Based on layerpeeling inverse scattering technique, adopting independent channelbycha nnel apodizingwindowing method rather than integral apodizingwindowing proce dure, the desired SFBG is figured out successfully. The fa brication techniques for this SFBG are discussed as well. Reflection spectrum, group time delay and group time delay ripple are analyzed by the method of transf ormation matrix. The results show that this SFBG satisfied all requirements of designing target. In DWDM optical fiber telecommunication systems, this novel SFB G is a promising candidate for the perfect high performance combfilter used in multiwavelength laser.