All-fiber periodic filters for DWDM using a cascade of FIR and IIR lattice filters

Author

Slavík, Radan ; LaRochelle, Sophie

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. Laval, Que., Canada

Volume

16

Issue

2

fYear

2004

Firstpage

497

Lastpage

499

Abstract

Infinite impulse response periodic transmission filters based on superimposed chirped fiber Bragg gratings cascaded with finite impulse response periodic filters, based on all-fiber Mach-Zehnder filters, are designed and experimentally demonstrated to have flat amplitude responses and nearly constant in-band group delays. These filters should be useful in dense wavelength division multiplexing systems, especially as interleavers.

Keywords

Bragg gratings; FIR filters; IIR filters; lattice filters; optical communication equipment; optical fibre filters; transient response; wavelength division multiplexing; DWDM; all-fiber Mach-Zehnder filters; all-fiber periodic filters; chirped fiber Bragg gratings; dense wavelength division multiplexing systems; finite impulse response periodic filters; flat amplitude response; in-band group delays; infinite impulse response lattice filters; infinite impulse response periodic transmission filters; interleavers; Band pass filters; Fiber gratings; Finite impulse response filter; IIR filters; Insertion loss; Lattices; Optical fiber filters; Optical filters; Passband; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.822260

Filename

1266469