Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure
With the development of the Internet of Things, cloud networking, and 4K/8K high-definition video, global internet traffic has seen a dramatic increase. This surge in traffic has placed higher demands on the performance of optical networks, featuring higher data rates, lower latency, and lower cost....
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/1/68 |
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| author | Guangying Yang Yixiao Zhu Ziheng Zhang Lina Man Xiatao Huang Xingang Huang Weisheng Hu |
| author_facet | Guangying Yang Yixiao Zhu Ziheng Zhang Lina Man Xiatao Huang Xingang Huang Weisheng Hu |
| author_sort | Guangying Yang |
| collection | DOAJ |
| description | With the development of the Internet of Things, cloud networking, and 4K/8K high-definition video, global internet traffic has seen a dramatic increase. This surge in traffic has placed higher demands on the performance of optical networks, featuring higher data rates, lower latency, and lower cost. The passive optical network (PON) is a representative scenario of optical access networks. Issues such as burst-mode detection in upstream PON scenarios, flexible rate allocation in downstream scenarios, and the simplification of hardware complexity at the optical network unit (ONU) side have attracted considerable attention. Compared to intensity modulation/direct detection (IM/DD), a recently proposed coherent PON incorporates a local oscillator laser at the receiver, enabling superior receiver sensitivity, spectrally efficient modulation, linear optical field recovery, and flexible channel selection. These features significantly enhance the flexibility and data rates of PON systems. This paper provides a comprehensive review of the development of coherent PONs, particularly in aspects of preamble design for burst-mode detection in upstream scenarios, the design of flexible rate PONs in downstream scenarios, and solutions for reducing hardware complexity at the ONU side. |
| format | Article |
| id | doaj-art-5c52ca6790754816bd161bf160a7170b |
| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-5c52ca6790754816bd161bf160a7170b2025-01-24T13:46:24ZengMDPI AGPhotonics2304-67322025-01-011216810.3390/photonics12010068Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified StructureGuangying Yang0Yixiao Zhu1Ziheng Zhang2Lina Man3Xiatao Huang4Xingang Huang5Weisheng Hu6State Key Laboratory of Advanced Optical Communication System and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Advanced Optical Communication System and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Advanced Optical Communication System and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaState Key Laboratory of Advanced Optical Communication System and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaZTE Corporation, Shanghai 201203, ChinaZTE Corporation, Shanghai 201203, ChinaState Key Laboratory of Advanced Optical Communication System and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaWith the development of the Internet of Things, cloud networking, and 4K/8K high-definition video, global internet traffic has seen a dramatic increase. This surge in traffic has placed higher demands on the performance of optical networks, featuring higher data rates, lower latency, and lower cost. The passive optical network (PON) is a representative scenario of optical access networks. Issues such as burst-mode detection in upstream PON scenarios, flexible rate allocation in downstream scenarios, and the simplification of hardware complexity at the optical network unit (ONU) side have attracted considerable attention. Compared to intensity modulation/direct detection (IM/DD), a recently proposed coherent PON incorporates a local oscillator laser at the receiver, enabling superior receiver sensitivity, spectrally efficient modulation, linear optical field recovery, and flexible channel selection. These features significantly enhance the flexibility and data rates of PON systems. This paper provides a comprehensive review of the development of coherent PONs, particularly in aspects of preamble design for burst-mode detection in upstream scenarios, the design of flexible rate PONs in downstream scenarios, and solutions for reducing hardware complexity at the ONU side.https://www.mdpi.com/2304-6732/12/1/68passive optical networksburst-mode detectionflexible rate allocationsimplify complexity |
| spellingShingle | Guangying Yang Yixiao Zhu Ziheng Zhang Lina Man Xiatao Huang Xingang Huang Weisheng Hu Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure Photonics passive optical networks burst-mode detection flexible rate allocation simplify complexity |
| title | Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure |
| title_full | Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure |
| title_fullStr | Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure |
| title_full_unstemmed | Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure |
| title_short | Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure |
| title_sort | coherent optics for passive optical networks flexible access rapid burst detection and simplified structure |
| topic | passive optical networks burst-mode detection flexible rate allocation simplify complexity |
| url | https://www.mdpi.com/2304-6732/12/1/68 |
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