Optimized spinning design for low PMD fibers: an analytical approach

Galtarossa, Andrea; Palmieri, Luca; Pizzinat, A.

doi:10.1109/50.956137

Cited by 57 publications

(45 citation statements)

References 15 publications

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“…As was already observed for polarization-maintaining spun fibers [9], this result implies that if is known, it is much more effective to choose the spin rate properly, rather than spinning as fast as possible.…”

Section: A Within the Short-period Assumptionsupporting

confidence: 59%

“…It may be proved that these amplitudes correspond to those spins that make the DGD of a deterministic fiber a periodic function [18]. This result explains the numerical observation [9] that spin functions optimized for a polarization-maintaining fiber allow quasioptimal DGD reduction, even when the fiber birefringence evolves randomly. For example, we may calculate the mean DGD of a polarization-maintaining fiber spun according to the function…”

Section: A Within the Short-period Assumptionsupporting

confidence: 55%

“…While it has been found empirically that it is more effective to spin fibers at a rate that changes periodically as they are drawn [6]- [8], rather than spinning them at a constant rate, the reasons for the advantage of periodic over constant spinning have not been clear. A great part of the analysis to date has treated spun fibers with a constant birefringence and no random variations [5]- [9]. This case is a useful starting point for the study of spun fibers because the analysis is simple; however, it does not correspond to the usual case in telecommunication fibers.…”

Section: T He Interest In Polarization-mode Dispersion (Pmd)mentioning

confidence: 99%

“…If that fiber is spun according to a periodic function of period , it may be shown (see Section IV) that in the long-length regime, the mean DGD of the spun fiber equals (9) In (9), is the mean DGD that the same fiber would have if it were not spun, and and are defined as (10) where and . We remark that the expressions given in (10) depend only on the ratio .…”

Section: A Within the Short-period Assumptionmentioning

confidence: 99%

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

Galtarossa

Palmieri

Pizzinat

et al. 2003

J. Lightwave Technol.

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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.Index Terms-Beat length, birefringence correlation length, fiber birefringence, polarization-mode dispersion (PMD), spun fibers.

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Section: A Within the Short-period Assumptionsupporting

confidence: 59%

Section: A Within the Short-period Assumptionsupporting

confidence: 55%

Section: T He Interest In Polarization-mode Dispersion (Pmd)mentioning

confidence: 99%

Section: A Within the Short-period Assumptionmentioning

confidence: 99%

See 2 more Smart Citations

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

Galtarossa

Palmieri

Pizzinat

et al. 2003

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Two approaches have been suggested to model the reduction of the PMD in the spun fibres, one of which is based on the evolution of the polarization state (Galtarossa et al, 2001;Ming-Jun &Nolan, 1998). The evolution of the vector representing the polarization dispersion is ruled by the dynamic equation which is linked to the vector of the local birefringence.…”

Section: Theory Of Spun Fibresmentioning

confidence: 99%