Compact tunable FIR dispersion compensator in SiON technology

Author

Horst, F. ; Germann, R. ; Bapst, U. ; Wiesmann, D. ; Offrein, B.J. ; Bona, G.L.

Author_Institution

IBM Res., Zurich Res. Lab., Ruschlikon, Switzerland

Volume

15

Issue

11

fYear

2003

Firstpage

1570

Lastpage

1572

Abstract

We present a tunable dispersion compensator, based on a sixth-order finite impulse response lattice filter. The filter has a free spectral range of 100 GHz and can be tuned for linear group delay slopes between -100 and 100 ps/nm with less than 1-ps ripple over a usable bandwidth of more than 60 GHz. Within this usable bandwidth, the average polarization-mode dispersion is low, reaching 2.4 ps only for extreme group delay slopes. The filter can also generate higher order group delay curves, for example for dispersion slope compensation.

Keywords

FIR filters; compensation; lattice filters; optical directional couplers; optical fibre dispersion; optical fibre filters; optical fibre polarisation; optical tuning; silicon compounds; 60 GHz; SiON; SiON technology; average polarization-mode dispersion; compact tunable FIR dispersion compensator; dispersion slope compensation; extreme group delay slopes; free spectral range; higher order group delay curves; linear group delay slopes; ripple; sixth-order finite impulse response lattice filter; usable bandwidth; Bandwidth; Bit rate; Delay lines; Fiber gratings; Finite impulse response filter; Fluctuations; Optical filters; Optical refraction; Optical ring resonators; Optical waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.818671

Filename

1237591