Binary-Phase Spatial Light Filters for Mode-Selective Excitation of Multimode Fibers

Author

Stepniak, Grzegorz ; Maksymiuk, Lukasz ; Siuzdak, Jerzy

Author_Institution

Inst. of Telecommun., Warsaw Univ. of Technol., Warsaw, Poland

Volume

29

Issue

13

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

1980

Lastpage

1987

Abstract

In this paper, spatial light modulation is proposed to increase the transmission capacity of graded-index multimode fibers. In the method, selected linearly polarized eigenmodes of the fiber are excited using simple binary-phase spatial filters. Numerical results indicate that the selectivity of the method is very high, also for fibers with perturbed profiles. The excess attenuation of the method is very low. In the experiment, a threefold increase of fiber bandwidth for several filters is obtained.

Keywords

gradient index optics; optical fibre dispersion; optical fibre polarisation; optical filters; spatial filters; spatial light modulators; binary-phase spatial light filters; excess attenuation; fiber bandwidth; graded-index multimode fibers; linearly polarized eigenmodes; mode-selective excitation; spatial light modulation; transmission capacity; Apertures; Approximation methods; Bandwidth; Dispersion; Frequency response; Modulation; Strontium; Multimode fiber (MMF); binary-phase filters; mode-selective excitation; spatial light modulation (SLM); transmission capacity;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2155621

Filename

5770158