Modal dispersion compensation by simultaneous use of spatially resolved equalization and restricted mode launch

Author

Patel, Ketan M. ; Polley, Arup ; Ralph, Stephen E.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

2

fYear

2003

fDate

27-28 Oct. 2003

Firstpage

973

Abstract

In this paper, we analyze the effect of compounding RML with SRE. We numerically model the MMF link under RML condition as well as the effect of SRE. Well known approximations for the model group-delay τ_m, and Laguerre-Gaussian polynomials are used for computing mode-field profiles. The external efficiency η_m of each mode to the multisegment detector is computed by the overlap integral between the mode intensity and the detector. A two-segment, SRE where the detector signals are subtracted, is simulated by alternating the polarity of detector responsivity. Finally, the normalized, overall link response is computed. The link is simulated with and without SRE enhancement for various illumination condition is compared. The induced optical loss commensurate with the suppression of higher order modes by SRE is also compared.

Keywords

Gaussian processes; compensation; delays; optical fibre communication; optical fibre dispersion; optical fibre losses; Laguerre-Gaussian polynomial; MMF link; group-delay; link response; modal dispersion compensation; mode intensity; mode-field profile; multimodefiber; multisegment detector; optical loss; restricted mode launch; spatially resolved equalization; Bandwidth; Computational modeling; Delay; Detectors; Laser modes; Optical computing; Optical losses; Photodetectors; Spatial resolution; Vertical cavity surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE

ISSN

1092-8081

Print_ISBN

0-7803-7888-1

Type

conf

DOI

10.1109/LEOS.2003.1253131

Filename

1253131