Monitoring PMD-induced penalty and other system performance metrics via a high-speed spectral polarimeter

Wang, S.X.; Weiner, Andrew M.; Boroditsky, M.; Brodsky, Michael

doi:10.1109/lpt.2006.880779

Cited by 7 publications

(2 citation statements)

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“…These methods require the PSPs information of both ends of fiber link, which is not practical in long-haul transmission systems. State of Polarization (SOP) string length has been shown related to PMD-induced power penalty [8][9][10][11], and it is robust to other impairments [11], such as CD, ASE and PDL. However, Polarimeter, which is expensive for real system, is required to obtain string length.…”

Section: Introductionmentioning

confidence: 99%

CD-insensitive PMD monitoring based on RF power measurement

Yang¹,

Chen²,

Cheng³

et al. 2011

Opt. Express

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Abstract:We propose and experimentally demonstrate a chromatic dispersion (CD)-insensitive first-order polarization mode dispersion (PMD) monitoring method based on radio-frequency (RF) power measurement. In high-speed (>10-GSym/s) transmission systems, a narrowband fiber Bragg grating (FBG) notch filter filters out the optical components at 10GHz away from the carrier. After square-law detection, the 10-GHz RF tone changes with PMD and is insensitive to CD, which can be used as a PMD monitoring signal. Compared with the monitoring techniques utilizing clock tone, the PMD measurement range is increased from 26.3-ps to 50-ps while the requirement of the bandwidth of photodetector is reduced from 19GHz to 10GHz in 19-Gsym/s systems. It is experimentally shown that this technique is efficient on CD-insensitive first-order PMD monitoring for 38-Gbit/s DQPSK and 57-Gbit/s D8PSK systems.

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Section: Introductionmentioning

confidence: 99%

CD-insensitive PMD monitoring based on RF power measurement

Yang¹,

Chen²,

Cheng³

et al. 2011

Opt. Express

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“…A heterodyne polarimeter with an RF spectrum analyzer was used to estimate the PMD-induced system penalty by measuring the state of polarization 'string' length in a nonintrusive way [4]. A similar technique with a higher measurement speed was proposed in [5], which uses direct detection with a high resolution optical spectrum analyzer consisting of an InGaAs line-scan camera and a virtually imaged phase array. We have proposed a simplified method to directly measure the DGD in traffic-carrying optical links using coherent detection and RF signal processing [6].…”

Section: Introductionmentioning

confidence: 99%

PMD monitoring in traffic-carrying optical systems and its statistical analysis

Jiang¹,

Sundhararajan²,

Richards³

et al. 2008

Opt. Express

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Differential group delay (DGD) experienced by the optical signal in in-service terrestrial optical fiber systems has been monitored for the first time without the requirement of looping-back, in which the live traffic carried in the fiber was used as the probing signal. The relationship between the measured DGD using this technique and the actual fiber PMD parameter is formulated and verified by field experiments.

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