{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,5]],"date-time":"2024-09-05T17:50:41Z","timestamp":1725558641788},"reference-count":15,"publisher":"Optica Publishing Group","issue":"7","license":[{"start":{"date-parts":[[2023,6,30]],"date-time":"2023-06-30T00:00:00Z","timestamp":1688083200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR-OA"},{"start":{"date-parts":[[2023,6,30]],"date-time":"2023-06-30T00:00:00Z","timestamp":1688083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["J. Opt. Commun. Netw."],"published-print":{"date-parts":[[2023,7,1]]},"abstract":"We analyze the metrology of transmitter and dispersion eye closure (TDEC) as defined in a 50G passive optical network (50G-PON) for assessing transmitter quality. First, we present a theoretical evaluation for adapting TDEC to 50G-PON, where equalized bandwidth limited avalanche-photodiode-based receivers are expected. We optimize the parameters for a proper numerical evaluation and provide some guidelines for implementing the metric. We also show that TDEC can be measured with both sampling and real-time oscilloscopes provided that there are enough samples for the latter. A comparison of two techniques, one noiseless and one considering noise enhancement, for computing the coefficients of the equalizer is also provided. Finally, an experimental comparison between a Mach\u2013Zehnder modulator and an electroabsorption-modulated-laser-based transmitter is carried out with different extinction ratios and fiber lengths, showing that TDEC can effectively predict the receiver sensitivity penalty.<\/jats:p>","DOI":"10.1364\/jocn.489208","type":"journal-article","created":{"date-parts":[[2023,6,16]],"date-time":"2023-06-16T20:00:41Z","timestamp":1686945641000},"page":"480","update-policy":"http:\/\/dx.doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["TDEC metric in 50G-PON: analytical and experimental investigation on several implementation aspects"],"prefix":"10.1364","volume":"15","author":[{"ORCID":"http:\/\/orcid.org\/0000-0002-0969-4438","authenticated-orcid":true,"given":"Mariacristina","family":"Casasco","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00bgk9508","id-type":"ROR","asserted-by":"publisher"}]}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-9515-4947","authenticated-orcid":true,"given":"Giuseppe","family":"Caruso","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00bgk9508","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Munich Research Center, Huawei Technologies"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-2317-8437","authenticated-orcid":true,"given":"Ivan N.","family":"Cano","sequence":"additional","affiliation":[{"name":"Munich Research Center, Huawei Technologies"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-1090-9587","authenticated-orcid":true,"given":"Derek","family":"Nesset","sequence":"additional","affiliation":[{"name":"Ipswich Research Center, Huawei Technologies"}]},{"given":"Maurizio","family":"Valvo","sequence":"additional","affiliation":[{"name":"Access Innovation, TIM - Telecom Italia"}]},{"given":"Valter","family":"Ferrero","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00bgk9508","id-type":"ROR","asserted-by":"publisher"}]}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-1909-4281","authenticated-orcid":true,"given":"Roberto","family":"Gaudino","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00bgk9508","id-type":"ROR","asserted-by":"publisher"}]}]}],"member":"285","published-online":{"date-parts":[[2023,6,30]]},"reference":[{"key":"jocn-15-7-480-R1","doi-asserted-by":"publisher","first-page":"48","DOI":"10.1109\/MCOM.001.2100441","volume":"60","author":"Bonk","year":"2022","journal-title":"IEEE Commun. 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