Spectrum-efficient optical drop-add-drop network with a centralized multi-carrier light source

Cai, Yi; Cheng, Jin M.; Yan, Yao

doi:10.1007/s11107-014-0429-3

Cited by 2 publications

(4 citation statements)

References 20 publications

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“…Figure 1 shows the OMAN’s dual-fiber ring construction. The metro access network consists of one or two central offices and M RNs [ 9 , 15 , 16 , 29 , 30 ], with a ring feeder fiber design. When building an OMAN, redundant fibers are buried [ 14 ].…”

Section: Architecture Of the Proposed Optical Metro Access Networkmentioning

confidence: 99%

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A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

Ullah,

Almadhor

et al. 2024

Sensors

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This study proposes and presents a new central office (CO) for the optical metro access network (OMAN) with an affordable and distinctive switching system. The CO’s 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 10−3 to 10−13 for the downlink and 10−6 to 10−14 for the uplink transmission. Furthermore, in the OMAN’s 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.

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Section: Architecture Of the Proposed Optical Metro Access Networkmentioning

confidence: 99%

“…A spectrum-efficient network with an add–drop multiplexer and a centralized OMC source was utilized for the OMAN. Similarly, the carrier wavelength reuse concept was presented using an OMC-based ring network and a reconfigurable optical add–drop multiplexer [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

Ullah,

Almadhor

et al. 2024

Sensors

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“…The CO also includes receivers that receive uplink data from the RNs through different fiber spans. Typically, a WDM‐MAN has one or two central offices and M number of RNs connected via ring feeder fiber 17–19 ; in our proposed model, we deployed one CO, which is an economical solution for OMAN supporting high data rate. However, the proposed system has one central office and six RNs that can distribute multiple wavelengths to access nodes (λ1 → λm) without needing reconfigurable optical add‐drop multiplexer and optical add‐drop multiplexer 20 .…”

Section: The Proposed Metro Access Networkmentioning

confidence: 99%

“…It can also improve efficiency and simplify maintenance in OMANs. It has been proposed that OMCbased sources are the best solution for OMAN at the OLT, [16][17][18] but so far, the detailed deployment of OMC sources in OMAN is not researched, with much detail on designing the OLTs from the OMC source. Furthermore, in our proposed OMAN, we deployed only a single CO for running the metro access network.…”

Section: Introductionmentioning

confidence: 99%

Efficient optical fiber communication in the metro access domain based on an optical multicarrier source

Ullah,

Khan

et al. 2023

Micro & Optical Tech Letters

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This paper proposes an efficient optical fiber communication scheme for an optical metro access network (OMAN) based on an optical multicarrier (OMC) generator. The central office (CO)'s foundation is a novel, cost‐effective OMC‐generating technique. The OMC is designed from a pulsed laser source and three cascaded electro‐optic modulators (EOMs) driven by an amplified RF source of 20 GHz signal that has generated more than 60 frequencies with excellent tone‐to‐noise ratio (TNR) ~ 40 dB and amplitude excursions from zero to 3 dB. The conventional CO is replaced with a cost‐effective OMC‐based source with an effective switching mechanism, which is necessary and equally important to be handled reliably. The downstream data of 20 Gbps per carrier is transmitted using a duo‐binary coding scheme. Six remote nodes (RNs) supported by the suggested OMC source, at each RN 10 optical network units (ONUs), can be deployed having distance laps of 5 km between the RNs, the distance between the RNs and the ONUs is kept at 2 km, the ONUs were tested w.r.t the bit error rate (BER) and the power penalties for the proposed transmissions. The BER for different fiber lengths from 5 to 25 km at various RNs and ONUs ranges were calculated and demonstrated from 1e−3 to 1e−13, showing the feasibility of the proposed OMAN.

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Spectrum-efficient optical drop-add-drop network with a centralized multi-carrier light source

Cited by 2 publications

References 20 publications

A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

Efficient optical fiber communication in the metro access domain based on an optical multicarrier source

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