Design of long-period fiber gratings with fast-varying parameters

Author

Ke, Hong ; Peng, Jihu ; Fan, Chongcheng

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

13

Issue

11

fYear

2001

Firstpage

1194

Lastpage

1196

Abstract

A transfer matrix of an arbitrary period in a long-period fiber grating (LPFG) is derived. Cascade of such matrixes can easily be used to calculate the overall performance of LPFG, with fast variation in parameters (which is common practice in LPFGs) such as period length, strength, etc. Results show that the difference in transmittivity between our work and traditional coupled-mode theory becomes obvious, when abrupt change such as /spl pi/ phase-shift occurs. This method can be used in the mask design aiming at overall performance optimization through period-by-period pattern adjustment.

Keywords

diffraction gratings; optical design techniques; optical fibre theory; optimisation; /spl pi/ phase-shift; arbitrary period; coupled-mode theory; fast-varying parameters; long-period fiber grating design; mask design; overall performance; performance optimization; period length; period-by-period pattern adjustment; transfer matrix; transmittivity; Bandwidth; Bragg gratings; Equations; Fiber gratings; Optical fiber devices; Optical fiber filters; Optical fiber sensors; Optical fiber theory; Optical fibers; Optimization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.959361

Filename

959361