Bae, J Chun, J Lee, SB 2024-01-21T06:39:39Z 2024-01-21T06:39:39Z 2021-09-01 2004-08 0733-8724 https://pubs.kist.re.kr/handle/201004/137387 This paper proposes an accurate modeling technique of concatenated long-period fiber gratings (LPFGs). The proposed technique,is then applied to the synthesis of LPFGs for the erbium gain equalization using both the simulated annealing and the steepest descent minimization technique. A piecewise-uniform LPFG is theoretically synthesized according to the inverted gain spectrum of a commercially available erbium-doped fiber amplifier (EDFA) over the range of 1525-1570 nm. Sensitivity analysis of the designed structure is presented by Monte Carlo simulation with regard to the manufactured amplitude mask. To verify a synthesizing technique using the proposed modeling, the piecewise-uniform LPFGs for gain flattening of EDFA are fabricated and their spectra are also presented experimentally. English IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC SCATTERING ALGORITHM EQUATIONS DESIGN Synthesis of long-period fiber gratings with the inverted erbium gain spectrum using the multiport lattice filter model Article 10.1109/JLT.2004.832429 1 JOURNAL OF LIGHTWAVE TECHNOLOGY, v.22, no.8, pp.1976 - 1986 JOURNAL OF LIGHTWAVE TECHNOLOGY 22 8 1976 1986 scie scopus 000223206800019 2-s2.0-4344580574 Engineering, Electrical & Electronic Optics Telecommunications Engineering Optics Telecommunications Article SCATTERING ALGORITHM EQUATIONS DESIGN erbium-doped fiber amplifier (EDFA) long-period fiber grating(LPFG) minimization technique Monte Carlo simulations