Self-tuning transmitter for fibre-to-the-antenna PON networks

Parolari, P.; Marazzi, L.; Brunero, M.; Gatto, Alberto; Martinelli, Mario; Chanclou, Philippe; Deniel, Qian; Saliou, Fabienne; Le, Sy Dat; Brenot, R.; Barbet, S.; Lelarge, F.; Gebrewold, Simon A.; O’Dúill, Sean; Hillerkuss, D.; Leuthold, Juerg; Gavioli, G.; Galli, P.

doi:10.1016/j.osn.2014.01.008

Cited by 18 publications

(11 citation statements)

References 18 publications

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“…Three radio technologies (GSM, LTE, LTEa) and radio carriers coexist thus meaning a minimum of 15 optical network units per antenna site. Fig.10 Example of a mobile front-haul [21].…”

Section: How To Use It?mentioning

confidence: 99%

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Demystification of the Self-Seeded WDM Access

Maho

Simon

Barbet

et al. 2016

J. Lightwave Technol.

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The self-seeded cavity appeared in the last few years\ud as a colorless and low cost solution for wavelength division multiplexing\ud access. Although the self-seeded source presents a simple\ud architecture, its behavior has been misunderstood for a long time.\ud In this paper, we explain its operating principles and why we can\ud define such a source as a laser. We evidence a laser threshold and\ud show cavity modes for various lengths.We describe the conditions\ud required by the reflective semiconductor optical amplifier to sustain\ud the self-seeded cavity, by evaluating the choice of its epitaxial\ud structure and the influence of its optical confinement factor. An\ud analysis of the cavity behavior is given, pointing out that the relative\ud intensity noise results from the beating noise between the cavity\ud modes. An overview over the last performances in the C- as well as\ud in the O-band is then presented. Some practical applications are\ud reported. In particular, we detail themobile front-haul as a possible\ud employment for the self-seeded cavity to achieve a self-organized\ud wavelength network

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“…Three radio technologies (GSM, LTE, LTEa) and radio carriers coexist thus meaning a minimum of 15 optical network units per antenna site. Fig.10 Example of a mobile front-haul [21].…”

Section: How To Use It?mentioning

confidence: 99%

“…In this scenario, the RSOA could be placed in the RRH optoelectronic transceivers, the Faraday rotator mirror and the AWG in the antenna cabinet (including power supply, fiber management, local alarm management, etc…), shared by all the ONUs [21]. The cavity length is quite short allowing for longer transmission distances.…”

Section: How To Use It?mentioning

confidence: 99%

Demystification of the Self-Seeded WDM Access

Maho

Simon

Barbet

et al. 2016

J. Lightwave Technol.

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“…Network embedded colourless transmitters based on reflective semiconductor optical amplifier (RSOA) self-seeding (SS) have proved to be compact self-tuning WDM PON transceivers operating up to 10 Gb/s [1]. SS colourless transmitters rely on laser cavities, where the RSOA is the cavity active element sustaining the lasing.…”

Section: Introductionmentioning

confidence: 99%

O-band 12-Gb/s FDM-WDM PON transmission exploiting self-seeding in reflective semiconductor optical amplifiers

Gatto

Brunero

Parolari

et al. 2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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WDM-PON colourless transmitters based on RSOA self-seeding (SS) proved to be compact self-tuning\ud transceivers up to 10 Gb/s. We employ frequency-division multiplexing (FDM) with different subcarrier\ud modulations to effectively exploit a 2-GHz limited O-band RSOA in a SS architecture, achieving, for the first\ud time to the best of our knowledge, 12-Gb/s transmission over 10-km SSMF. Due to O-band low chromatic\ud dispersion, propagation distance is only limited by the power budget, which determines the sub-bands signal to\ud noise ratio, reducing equalization effectiveness.\ud The paper presents sub-bands allocation, measured constellation diagrams and BERs, which demonstrate the\ud promising capability of the combination of FDM and RSOA SS to obtain beyond 10-Gb/s self-tuning WDM\ud PON transmitters

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“…In C-RANs the antennas, together with all the RF functionalities, are hosted at the cell sites in the remote radio heads (RRHs), which need to forward the signal to/from the BBUs through the fronthaul (FH) link. Due to the high available capacity preferred FH links exploit fiber optic transmission based on the common public radio interface (CPRI) protocol [2,3]. However digital FH leads to a bandwidth expansion not sustainable for next RAN requirements.…”

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confidence: 99%

LTE transmission exploiting pulse width modulation in fibre optic links

Parolari

Gatto

Combi

et al. 2017

2017 19th International Conference on Transparent Optical Networks (ICTON)

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Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on/off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). In particular in this contribution we demonstrate the capabilities of optical PWM for the transport of LTE signals to support the centralized access network (C-RAN) fronthaul in fibre optic link up to 10-km of standard single mode fibre. The generation and analysis of the radio signals is provided by software modules compliant with the LTE standard which allowed to analyse performance results for the different LTE carriers, channels and services. The PWM optical signal connecting RRUs to BBUs is generated by either directly modulating a DFB laser or an externally seeded reflective semiconductor optical amplifier (RSOA). Both devices could be exploited inside a wavelength division multiplexed passive optical network (WDM PON) architecture where the various RRU-to-BBU links are pooled through virtual point-to-point connections at different wavelengths. Keywords: WDM PON, fronthaul, PWM, RSOA, external-seeding. INTRODUCTIONNext generation (LTE and 5G) mobile communication networks are expected to cope with the ever-growing demand for high throughput, mobility and low latency which are changing the radio access networks (RANs) paradigm toward the centralized RAN (C-RAN). This architecture should be able to handle the growing demand of capacity and the increasing pervasivity of cellular systems. The C-RAN can be designed to support a large number of users taking advantage of mutual cooperation for interference mitigation and of a huge number of antennas for massive MIMO deployment [1]. In C-RANs the antennas, together with all the RF functionalities, are hosted at the cell sites in the remote radio heads (RRHs), which need to forward the signal to/from the BBUs through the fronthaul (FH) link. Due to the high available capacity preferred FH links exploit fiber optic transmission based on the common public radio interface (CPRI) protocol [2,3]. However digital FH leads to a bandwidth expansion not sustainable for next RAN requirements. Although CPRI compression or different RAN functional splits have been proposed a full-analog transmission, enabling the reduction of the bandwidth requirements, the latency and the hardware costs, will likely outperform other solutions. Recent strategies adopt multiple frequency-domain multiplexed (FDM) LTE signals assisted by analog and digital signal processing [4] or directly-modulated multiple intermediate frequency-over-fiber (IFoF) schemes [5]. On the other hand, analog radio-over-fiber (RoF) suffers from linear and nonlinear distortions (NLD) due to laser diode inherent nonlinearities, chromatic dispersion,...

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Self-tuning transmitter for fibre-to-the-antenna PON networks

Cited by 18 publications

References 18 publications

Demystification of the Self-Seeded WDM Access

Demystification of the Self-Seeded WDM Access

O-band 12-Gb/s FDM-WDM PON transmission exploiting self-seeding in reflective semiconductor optical amplifiers

LTE transmission exploiting pulse width modulation in fibre optic links

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