An analytical formula for the mean differential group delay of randomly birefringent spun fibers

Author

Galtarossa, Andrea ; Palmieri, Luca ; Pizzinat, Anna ; Marks, Brian S. ; Menyuk, Curtis R.

Author_Institution

Dept. of Inf. Eng., Univ. of Padova, Italy

Volume

21

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

1635

Lastpage

1643

Abstract

Polarization-mode dispersion (PMD) is a serious impairment for high-bit-rate optical telecommunication systems. It is known that spinning the fiber during the drawing process drastically reduces the PMD. However, the analysis of pulse propagation through a randomly birefringent spun fiber is still at an early stage. In this paper, we derive an analytical formula for the mean differential group delay of a periodically spun fiber with random birefringence. We model the birefringence with fixed modulus and a random orientation under the condition that the spin period is shorter than the beat length. Finally, we numerically compare the analytical results with those given by the random-modulus model of birefringence, and we obtain good agreement as long as the short-period assumption is satisfied.

Keywords

birefringence; drawing (mechanical); optical fibre communication; optical fibre dispersion; optical fibre fabrication; optical fibre polarisation; optical fibre theory; beat length; drawing process; high-bit-rate optical telecommunication systems; mean differential group delay; polarization-mode dispersion; pulse propagation; random birefringence; random orientation; random-modulus model; randomly birefringent spun fiber; randomly birefringent spun fibers; short-period assumption; Birefringence; Computer science; Delay; Helium; Measurement techniques; Optical fiber polarization; Optical propagation; Optical pulses; Polarization mode dispersion; Spinning;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2003.814385

Filename

1219527