Improved self-seeding and carrier remodulation performance for WDM-PON by means of double RSOA erasure

Celino, Daniel R.; Duarte, Ulysses Rondina; Romero, Murilo A.

doi:10.1016/j.optcom.2019.125018

Cited by 11 publications

(19 citation statements)

References 38 publications

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“…Our experimental results demonstrated an error free downstream transmission for extinction ratios as low as 3.5 dB. In order to further enhance the transmission performance, we recently proposed an improved WDM‐PON topology, 12 using a double‐cavity SS configuration at the OLT transmitter and a cascaded RSOA pair at the ONT receiver, to increase carrier‐erasure efficiency 12 . Also, in line to the driving applications for future PONs, we recently investigated the application of our latest topology as an analog fronthaul option to future RAN 13 …”

Section: Analog Fronthaul Over a Colorless Wdm‐pon Topologymentioning

confidence: 87%

“…More recently, we have started to investigate an improved WDM‐PON configuration as a 5G mobile fronthaul 12,13 . Given the stringent performance requirements of 5G, we have sought to assure higher quality SS carrier generation, as well as improved carrier erasure efficiency, by placing two RSOAs are each end of each of the fronthaul links 12 . As before, self‐tunable colorless transmitters are established by selecting the operation wavelength at the AWG multiplexer/demultiplexer.…”

Section: Wdm‐pon As a Mobile Fronthaulmentioning

confidence: 99%

“…The optical links serving as the fronthaul architecture are part of the WDM‐PON network described above, which employs a double‐cavity SS transmitter for downlink and a cascaded‐RSOAs carrier‐reuse transceiver for the uplink. The details of the architecture are described in References 12,13. For the sake of completeness, the essentials are given as follows below.…”

Section: Analog Fronthaul Over a Colorless Wdm‐pon Topologymentioning

confidence: 99%

“…In a previous work, we have proposed a wavelength‐division multiplexing passive optical network (WDM‐PON) topology, 12 which has also been investigated as a fronthaul architecture 13 . This is because, although TDM based standards are the most usual in commercial PON systems, 5G fronthaul applications are suited for WDM‐PON, since WDM‐PON can offer multiple, dedicated, point‐to‐point high bandwidth channels, free of time‐synchronization constrains 14 …”

Section: Introductionmentioning

confidence: 99%

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Optimization of arrayed waveguide grating‐filtering response for efficient analog radio‐over‐fiber fronthaul over a wavelength‐division multiplexing passive optical network

Plazas

Souza

Celino

et al. 2020

Trans Emerging Tel Tech

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Wavelength‐division multiplexing passive optical network (WDM‐PON) is a promising solution to cope with the exponential data traffic growth, particularly regarding future mobile fronthaul. WDM‐PON schemes, based on self‐seeded wavelength agnostic transmitters using reflective semiconductor optical amplifiers (RSOAs), are seen as an option to provide an analog radio‐over‐fiber (A‐RoF) alternative to the current digital fronthaul. Although these A‐RoF have been already successfully demonstrated, it was observed that the arrayed waveguide grating (AWG)‐filtering characteristics affect both the optical seed generation and the radio signal integrity, requiring a design optimization. In order to do so, in this article, we optimize the A‐RoF transmission performance by comparing Bessel, Gaussian, and flat‐top AWG‐filter formats. The impact of seed linewidth and red‐shift on the signal error‐vector magnitude (EVM) and phase rotation is also investigated. We have found that EVM performance for BPSK and 16QAM transmission provided an improvement of 45% when compared to our previous results, with a phase offset of 0.8°, indicating little to no distortion, as a result of the selection of the optimal AWG filtering response.

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Section: Analog Fronthaul Over a Colorless Wdm‐pon Topologymentioning

confidence: 87%

Section: Wdm‐pon As a Mobile Fronthaulmentioning

confidence: 99%

Section: Analog Fronthaul Over a Colorless Wdm‐pon Topologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of arrayed waveguide grating‐filtering response for efficient analog radio‐over‐fiber fronthaul over a wavelength‐division multiplexing passive optical network

Plazas

Souza

Celino

et al. 2020

Trans Emerging Tel Tech

Self Cite

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show abstract

“…Therefore, configuring colourless ONU modules has been a major research direction in current WDM related techniques [16][17][18]. Today, many different kinds of colourless ONU modules, such as the wavelength reutilisation using amplitude modulation, phase to amplitude modulation and reflective semiconductor optical amplifier, have been proposed [19][20][21][22]. However, these methods require complex modulation skills for reducing the impact of downlink signals on uplink signals.…”

Section: Introductionmentioning

confidence: 99%

Full-Duplex Self-Recovery Optical Fibre Transport System Based on a Passive Single-Line Bidirectional Optical Add/Drop Multiplexer

Chang

2020

IEEE Photonics J.

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A full-duplex self-recovery optical fibre transport system is proposed on the basis of a novel passive single-line bidirectional optical add/drop multiplexer (SBOADM). This system aims to achieve an access network with low complexity and network protection capability. Polarisation division multiplexing technique, optical double-frequency application and wavelength reuse method are also employed in the transport system to improve wavelength utilisation efficiency and achieve colourless optical network unit. When the network comprises a hybrid tree-ring topology, the downstream signals can be bidirectionally transmitted and the upstream signals can continuously be sent back to the central office in the reverse pathways due to the remarkable routing function of the SBOADM. Thus, no complicated optical multiplexer/de-multiplexer components or massive optical switches are required in the transport system. If a fibre link failure occurs in the ring topology, then the blocked network connections can be recovered by switching only a single optical switch preinstalled in the remote node. Simulation results show that the proposed architecture can recover the network function effectively and provide identical transmission performance to overcome the impact of a breakpoint in the network. The proposed transport system presents remarkable flexibility and convenience in expandability and breakpoint self-recovery.

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Double‐RSOA colorless WDM‐PON for 5G fronthaul applications

Souza

Plazas

Celino

et al. 2022

Trans Emerging Tel Tech

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The introduction of 5G mobile systems poses significant challenges to the design of the fronthaul structure. The dense coverage, comprising several small cells operating in the millimeter‐wave range, with an enormous number of antennas, makes conventional digital‐radio‐over‐fiber unfeasible. On the other hand, the centralized architecture of the optical fronthaul is well‐suited for the passive optical network (PON) topology, with WDM‐PON as a strong contender due to its capability to establish logical point‐to‐point optical links to each cell site. However, the large‐scale deployment of WDM‐PON requires the availability of colorless transmitters, where the same hardware is able to generate any wavelength needed by the network. In this context, this paper investigates an analog fronthaul configuration over a colorless WDM‐PON for 5G and beyond, employing the techniques of self‐seeding in the downlink and carrier reuse in the uplink. We numerically evaluated the EVM when transmitting 1.25 Gbps at 3.5 GHz and 10 Gbps at 26 GHz in a 20 km optical link. The results are within the 3GPP requirements, demonstrating the feasibility of the proposed fronthaul.

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Improved self-seeding and carrier remodulation performance for WDM-PON by means of double RSOA erasure

Cited by 11 publications

References 38 publications

Optimization of arrayed waveguide grating‐filtering response for efficient analog radio‐over‐fiber fronthaul over a wavelength‐division multiplexing passive optical network

Optimization of arrayed waveguide grating‐filtering response for efficient analog radio‐over‐fiber fronthaul over a wavelength‐division multiplexing passive optical network

Full-Duplex Self-Recovery Optical Fibre Transport System Based on a Passive Single-Line Bidirectional Optical Add/Drop Multiplexer

Double‐RSOA colorless WDM‐PON for 5G fronthaul applications

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