Measurement of multipath interference in the coherent crosstalk regime

Author

Ramachandran, Siddharth ; Nicholson, Jeffrey W. ; Ghalmi, Samir ; Yan, Man F.

Author_Institution

OFS Labs., Murray Hill, NJ, USA

Volume

15

Issue

8

fYear

2003

Firstpage

1171

Lastpage

1173

Abstract

We compare various techniques to measure multipath interference (MPI) in devices exhibiting distributed coherent crosstalk. A notable example of devices in this class is the higher order mode dispersion compensator. These devices are susceptible to deterministic noise as well as intermittent fading, and the measurement technique employed must capture both these manifestations of MPI. We show that, ultimately, slow temporal intensity variations of a continuous-wave distributed-feedback laser yields the best measure of MPI in few-mode fiber devices.

Keywords

Raman lasers; compensation; fading channels; light coherence; light interference; light interferometers; optical crosstalk; optical dispersion; optical fibre amplifiers; optical fibre communication; optical fibre testing; optical noise; coherent crosstalk regime; continuous-wave distributed-feedback laser; distributed Raman amplification schemes; distributed coherent crosstalk; few-mode fiber devices; higher order mode dispersion compensator; intensity noise; intermittent fading; light interferometer; multipath interference; optical crosstalk; phase noise; slow temporal intensity variations; Crosstalk; Fiber lasers; Fluctuations; Interference; Laser modes; Laser noise; Optical fiber devices; Optical fiber dispersion; Optical fibers; Phase noise;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.814880

Filename

1215540