10 Gbit/s Drop and Continue Colorless Operation of a 1.5¿m AlGalnAs Reflective Amplified Electroabsorption Modulator

Garreau, Alexandre; Kazmierski, C.; Chiaroni, D.; Pallec, Michel Le; Décobert, J.; Landreau, J.; Carpentier, D.; Provost, Jean-Guy

doi:10.1109/ecoc.2006.4801160

Cited by 13 publications

(12 citation statements)

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“…In both branches of the ONU, each one dedicated to one of two wavelengths as in [6], a reflective modulator performs the desired task of either detection or modulation. These basic functionalities have been particularly demonstrated for RSOA and SOA/REAM devices [16,20]. A tandem configuration of such components inside the ONU permits either dual-operability or dynamic bandwidth partitioning functionalities in broadband access networks, as will now be explained.…”

Section: Integration Of Higher Layer Functionalities At the Physimentioning

confidence: 99%

“…Figure 2(e) shows the received upstream signals for RX1 at the OLT in the case of such an operator change. As can be seen, by monitoring the relative difference ∆ in the received optical signal, which is up to 30 dB [20], a switch of the operator can be deduced and the transmitters of the OLT reconfigured as described earlier. As a partial conclusion, though this kind of signaling was not implemented in this work, the proposed scheme is in principle settled just at the physical layer and does not require higher layer functionalities.…”

Section: (D)mentioning

confidence: 99%

“…Although this can be done at the higher layers by implementing a simple protocol, the information can be in principle retrieved by the OLT just by monitoring the received optical signals. Since one upstream receiver is left unused (e.g., RX1 at λ Ri in normal operation) as it does not receive information but an extinct optical signal as long as the ONU drops the optical signal to its electrical detector [20], this detector will notice a change of the operator due to the presence of upstream data once this switch is made by the ONU. Figure 2(e) shows the received upstream signals for RX1 at the OLT in the case of such an operator change.…”

Section: (D)mentioning

confidence: 99%

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Dual-Operability and Bandwidth Partitioning Enabled by an ONU With Tandem-Modulator

Schrenk¹,

Bauwelinck

Lazaro

et al. 2011

J. Opt. Commun. Netw.

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Abstract-An upgrade at the physical layer regarding unbundling and dynamic bandwidth provisioning of a wavelength division multiplexed access network is presented. The capability of a reflective modulator to act as a photodetector is exploited and allows a tandem configuration to be used at the optical network unit (ONU) for flexible switching of the detection and modulation branch. Consequently, a mechanism for service operator selection and for dynamic bandwidth partitioning up to twice the nominal data rate is provided. The scheme is experimentally evaluated for different kinds of modulators and shows, together with a full-duplex transmission at 10 Gb/s, additional operation modes, featuring unidirectional downstream and upstream burst-mode transmission with up to 20 Gb/s for ONUs based on a combination of a semiconductor optical amplifier and a reflective electro-absorption modulator.

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Section: Integration Of Higher Layer Functionalities At the Physimentioning

confidence: 99%

Section: (D)mentioning

confidence: 99%

Section: (D)mentioning

confidence: 99%

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Dual-Operability and Bandwidth Partitioning Enabled by an ONU With Tandem-Modulator

Schrenk¹,

Bauwelinck

Lazaro

et al. 2011

J. Opt. Commun. Netw.

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“…EAMs have also been investigated as they provide fast switching time. However, the wavelength-dependent optical losses limit the spectral operation range, and more complex structures are needed, which require the integration of EAM and SOA into a single chip [12]. The large optical bandwidth, high extinction ratio, high gain, and fast switching time make SOA more suitable candidates.…”

Section: Introductionmentioning

confidence: 99%

Semiconductor Optical Amplifier for Next Generation of High Data Rate Optical Packet-Switched Networks

Valicourt¹,

Adrover²,

Moroz³

et al. 2015

Some Advanced Functionalities of Optical Amplifiers

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This chapter provides an overview of considerations for the development of semiconductor optical amplifiers SO" for the next generations of packet-switched optical networks. SO" devices are suitable candidates in order to realize highperformance optical gates due to their high extinction ratio and fast switching time. However such devices also introduce linear and nonlinear noise. The impact of SO" devices on several modulation formats via theoretical model, numerical simulation, and experimental validation is studied. Impairments introduced by SO"s are considered in order to derive some general network design rules.Keywords: Semiconductor optical amplifier, optical packet-switched network, coherent communications, network design rules . IntroductionSince , coherent technology has paved the way toward high-capacity optical communications [ ]. Coherent systems allow transmitting information with multi-level modulation formats over both polarizations [polarization division multiplexing PΓM ] of light, which increases the spectral efficiency [bit/s/Hz b/s/Hz ] while relaxing the need for ultrahigh symbol rates to achieve data rates beyond Gb/s. Such technology is enabled by fast analogto-digital and digital-to-analog converters "ΓC and Γ"C , which, together with coherent receivers and robust digital signal processing ΓSP , allow for the generation and recovery of advanced modulation formats. PΓM-quadrature phase-shift keying QPSK and PΓM--quadrature amplitude modulation Q"M signaling at or Gbaud are currently used to develop and Gb/s transponders used in today's core networks. However, experimental In addition, data centers' global traffic presents a relentless growth, with % of such traffic flowing within data centers. The overall need of capacity together with the drop expected in coherent transponders' cost makes evident the expansion of coherent systems toward other network segments.Furthermore, the ever-emerging bandwidth-on-demand services in optical fiber networks induce distributed and bursty traffic profiles. Network flexibility and high efficiency are then required to handle these new traffic characteristics. Hybrid time/wavelength division multiplexing TΓM /WΓM systems could be the right trade-off between the high capacity provided by the WΓM virtual point-to-point links and the TΓM sub-wavelength switching granularity, allowing very efficient systems. Therefore, the WΓM optical packet-switched network was proposed to unite these benefits and reduce the power consumption compared to circuit-based networks [ ]. Ring nodes collect and aggregate the traffic from the access segment, into fixedduration optical packets and relay them to a WΓM synchronous optical packet-ring network.

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“…However, they suffer from high-temperature sensitivity, high insertion losses as well as a limited spectral operation range. Manuscript Therefore, more complex structures are needed such as reflective electro-absorption modulator SOA (REAM-SOA) [5]. The integration of passive and active photonic devices into a single chip looks like a promising approach to drive down the cost and reduce the footprint.…”

Section: Introductionmentioning

confidence: 99%

A Next-Generation Optical Packet-Switching Node Based on Hybrid III-V/Silicon Optical Gates

Valicourt¹,

Moroz²,

Jennevé³

et al. 2014

IEEE Photon. Technol. Lett.

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We report a hybrid silicon optical gate array based on a silicon waveguide with a III-V gain medium and two vertical grating couplers. The gates show a fast switching time, a high extinction ratio, and a positive fiber-to-fiber optical gain. The dynamic behavior of such a device is evaluated under electrically controlled gating. We further focus on a single gate performance in a packet-switched network. We demonstrate subwavelength switching operations with multiformat and multibit-rate optical packet based on direct and coherent detection.Index Terms-Semiconductor optical amplifier, silicon photonic, optical gate, packet optical add/drop multiplexer, WDM packet-switched network.

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10 Gbit/s Drop and Continue Colorless Operation of a 1.5¿m AlGalnAs Reflective Amplified Electroabsorption Modulator

Abstract: AlGalnAs large spectral range EAM has been integrated with SOA using Single Active Layer technology. The device operates as a 1OGbit/s drop & continue colorless element in a 50nm spectral range up 60°C

Cited by 13 publications

References 0 publications

Dual-Operability and Bandwidth Partitioning Enabled by an ONU With Tandem-Modulator

Dual-Operability and Bandwidth Partitioning Enabled by an ONU With Tandem-Modulator

Semiconductor Optical Amplifier for Next Generation of High Data Rate Optical Packet-Switched Networks

A Next-Generation Optical Packet-Switching Node Based on Hybrid III-V/Silicon Optical Gates

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