Measurement of multipath interference in the coherent cross-talk regime

Author

Ramachandran, S. ; Nicholson, J. ; Ghalmi, S. ; Yan, M. ; Kristensen, P.

Author_Institution

OFS Labs., Murray Hill, NJ, USA

fYear

2003

fDate

23-28 March 2003

Firstpage

231

Abstract

We compare various techniques to measure MPI in devices exhibiting distributed coherent crosstalk. Such devices are susceptible to deterministic noise as well as intermittent fading, and the measurement technique employed must capture both these manifestations of MPI. We evaluate several measurement techniques used to characterise MPI in few mode fibers. The coherent, distributed nature of MPI in few-mode fibers leads to fast fluctuations, manifesting in deterministic noise, as well as slow variations, reminiscent of fading in mobile communications systems. Slow temporal intensity variations of a CW DFB laser captures most of the relevant information.

Keywords

distributed feedback lasers; fading; light interference; mobile communication; multipath channels; optical crosstalk; optical fibre networks; wavelength division multiplexing; DFB laser; coherent crosstalk regime; fast fluctuation; intermittent fading; mobile communications system; multipath interference measurement; temporal intensity variation; Crosstalk; Fading; Fiber lasers; Fluctuations; Interference; Laser modes; Measurement techniques; Mobile communication; Optical fiber communication; Optical fiber devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communications Conference, 2003. OFC 2003

Print_ISBN

1-55752-746-6

Type

conf

DOI

10.1109/OFC.2003.1247621

Filename

1247621