Analysis of dispersion characteristics of long period fiber grating

International Conference on Recent Trends in Physics 2016

Jain, Vishal^1 ; Pawar, Santosh^2 ; Kumbhaj, S.^3 ; Sen, P.K.^3

Department of Applied Physics, Malwa Institute of Technology, Indore

452016, India^1

Department of Electronics and Communication, Dr. A P J Abdul Kalam University, Indore

452016, India^2

Department of Applied Physics, S G S Institute of Technology and Science, Indore

452003, India^3

关键词: Coupled mode theory;    Dispersion characteristics;    Grating structures;    Incident wavelength;    Long period fiber grating;    Long-period fibers;    Physical parameters;    Transmission coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/755/1/012057/pdf
DOI  :  10.1088/1742-6596/755/1/012057

来源: IOP

【 摘 要 】

Present work deals with theoretical analysis of dispersion characteristics of long period fiber grating using straight forward coupled mode theory. Simple analytical solutions are obtained for co propagating core and cladding modes under linear regime. These solutions are used to derive expressions for transmission coefficient (tLPG), phase (φL), delay (τρ) and group velocity dispersion (Dρ) for proposed grating structure. Attention is paid to study the delay response of the grating, by varrying physical parameters like incident wavelength and coupling strength of grating. Negative values of group delay for certain value of coupling strength shows that long period fiber can be used as dispersion compansator device in optical fiber communication link.