{"title":"PMD Impact on MCF Submarine Cables: Reassessing Outage Performance of Transmissions","authors":"Rendong Xu;Lin Sun;Guoxiang Xu;Wei Yin;Yucheng Fan;Haocai Huang;Gangxiang Shen","doi":"10.1109/LPT.2024.3505053","DOIUrl":null,"url":null,"abstract":"In this study, we designed and fabricated a cable accommodating 4-core and 7-core multicore fibers (MCFs). Fiber characteristics including attenuation, dispersion and polarization mode dispersion (PMD) during the cabling procedure were measured and analyzed. We observed a significant degradation in PMD for MCFs, particularly for those outer cores proximate to the cladding. Thus it requires longer taps of MIMO equalizers to sufficiently equalize at the receiver for reliable communications at the subsea distance. To assess the PMD impact on outage performance with limitations of MIMO equalizers’ taps, we developed a C-band 8000-km submarine transmission model which was calibrated with measured parameters during cabling, for qualifying 4- and 7-core MCFs in practical use. Simulations performed on the calibrated model could predict the outage performance for ensuring the communication reliability. More than 2-dB SNR margin is required to prevent the PMD-induced outage with using 300-taps MIMO equalizer at the receiver. Based on these comprehensive tests and simulations, we emphasize the importance of carefully managing PMD and ensuring adequate system SNR margins during the practical cabling and deployment of optical MCFs submarine cables.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 1","pages":"5-8"},"PeriodicalIF":2.3000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10764731/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, we designed and fabricated a cable accommodating 4-core and 7-core multicore fibers (MCFs). Fiber characteristics including attenuation, dispersion and polarization mode dispersion (PMD) during the cabling procedure were measured and analyzed. We observed a significant degradation in PMD for MCFs, particularly for those outer cores proximate to the cladding. Thus it requires longer taps of MIMO equalizers to sufficiently equalize at the receiver for reliable communications at the subsea distance. To assess the PMD impact on outage performance with limitations of MIMO equalizers’ taps, we developed a C-band 8000-km submarine transmission model which was calibrated with measured parameters during cabling, for qualifying 4- and 7-core MCFs in practical use. Simulations performed on the calibrated model could predict the outage performance for ensuring the communication reliability. More than 2-dB SNR margin is required to prevent the PMD-induced outage with using 300-taps MIMO equalizer at the receiver. Based on these comprehensive tests and simulations, we emphasize the importance of carefully managing PMD and ensuring adequate system SNR margins during the practical cabling and deployment of optical MCFs submarine cables.
期刊介绍:
IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.