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The CO\u2019s foundation is built upon a novel optical multicarrier (OMC) generation technique. This technique provides numerous frequency carriers that are characterized by a high tone-to-noise ratio (TNR) of 40 dB and minimal amplitude excursions. The purpose is to accommodate multiple users at the optical network unit side in the optical metropolitan area network (OMAN). The OMC generation is achieved through a cascaded configuration involving a single phase and two Mach Zehnder modulators without incorporating optical or electrical amplifiers or filters. The proposed OMC is installed in the CO of the OMAN to support the 1.2 Tbps downlink and 600 Gbps uplink transmission, with practical bit error rate (BER) ranges from 10\u22123 to 10\u221213 for the downlink and 10\u22126 to 10\u221214 for the uplink transmission. Furthermore, in the OMAN\u2019s context, optical fiber failure is a main issue. Therefore, we have proposed a possible solution for ensuring uninterrupted communication without any disturbance in various scenarios of main optical fiber failures. This demonstrates how this novel CO can rapidly recover transmission failures through robust switching a and centralized OLT. The proposed system is intended to provide users with a reliable and affordable service while maintaining high-quality transmission rates.<\/jats:p>","DOI":"10.3390\/s24041074","type":"journal-article","created":{"date-parts":[[2024,2,7]],"date-time":"2024-02-07T03:47:09Z","timestamp":1707277629000},"page":"1074","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4797-2184","authenticated-orcid":false,"given":"Rahat","family":"Ullah","sequence":"first","affiliation":[{"name":"Institute of Optics and Electronics, Nanjing University of Information Science & Technology, Nanjing 210044, China"},{"name":"Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China"},{"name":"Jiangsu International Joint Laboratory on Meterological Photonics and Optoelectronic Detection, Nanjing University of Information Science & Technology, Nanjing 210044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6351-4904","authenticated-orcid":false,"given":"Sibghat","family":"Ullah","sequence":"additional","affiliation":[{"name":"School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8665-1669","authenticated-orcid":false,"given":"Ahmad","family":"Almadhor","sequence":"additional","affiliation":[{"name":"Department of Computer Engineering and Networks, College of Computer and Information Sciences, Jouf University, Sakaka 72388, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hathal Salamah","family":"Alwageed","sequence":"additional","affiliation":[{"name":"College of Computer and Information Sciences, Jouf University, Sakaka 72388, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9968-8092","authenticated-orcid":false,"given":"Abdullah A.","family":"Al-Atawi","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Applied College, University of Tabuk, Tabuk 47512, Saudi Arabia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0752-7476","authenticated-orcid":false,"given":"Jianxin","family":"Ren","sequence":"additional","affiliation":[{"name":"Institute of Optics and Electronics, Nanjing University of Information Science & Technology, Nanjing 210044, China"},{"name":"Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China"},{"name":"Jiangsu International Joint Laboratory on Meterological Photonics and Optoelectronic Detection, Nanjing University of Information Science & Technology, Nanjing 210044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuaidong","family":"Chen","sequence":"additional","affiliation":[{"name":"Institute of Optics and Electronics, Nanjing University of Information Science & Technology, Nanjing 210044, China"},{"name":"Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China"},{"name":"Jiangsu International Joint Laboratory on Meterological Photonics and Optoelectronic Detection, Nanjing University of Information Science & Technology, Nanjing 210044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2244","DOI":"10.1109\/JLT.2021.3138456","article-title":"Precise time distribution and synchronization for low latency slotted optical metro-access networks","volume":"40","author":"Pan","year":"2022","journal-title":"J. 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