Optical terabit transmitter and receiver based on passive polymer and InP technology for high-speed optical connectivity between datacenters

We demonstrate the hybrid integration of a multi-format tunable transmitter and a coherent optical receiver based on optical polymers and InP electronics and photonics for next generation metro and core optical networks. The transmitter comprises an array of two InP Mach-Zehnder modulators (MZMs) with 42 GHz bandwidth and two passive PolyBoards at the back- and front-end of the device. The back-end PolyBoard integrates an InP gain chip, a Bragg grating and a phase section on the polymer substrate capable of 22 nm wavelength tunability inside the C-band and optical waveguides that guide the light to the inputs of the two InP MZMs. The front-end PolyBoard provides the optical waveguides for combing the In-phase and Quadrature-phase modulated signals via an integrated thermo-optic phase shifter for applying the pi/2 phase-shift at the lower arm and a 3-dB optical coupler at the output. Two InP-double heterojunction bipolar transistor (InP-DHBT) 3-bit power digital-to-analog converters (DACs) are hybridly integrated at either side of the MZM array chip in order to drive the IQ transmitter with QPSK, 16-QAM and 64-QAM encoded signals. The coherent receiver is based on the other side on a PolyBoard, which integrates an InP gain chip and a monolithic Bragg grating for the formation of the local oscillator laser, and a monolithic 90° optical hybrid. This PolyBoard is further integrated with a 4-fold InP photodiode array chip with more than 80 GHz bandwidth and two high-speed InP-DHBT transimpedance amplifiers (TIAs) with automatic gain control. The transmitter and the receiver have been experimentally evaluated at 25Gbaud over 100 km for mQAM modulation showing bit-error-rate (BER) performance performance below FEC limit

Experimental Investigation of the Validity Domain of the Gaussian Noise Model over Dispersion Managed Systems (Orale)

International audienceWe measure the span-to-span noise covariance as indicator of Gaussian noise model accuracy over dispersion-managed systems. We found that covariance shouldn’t exceed 1/3 of variance, which occurs once residual dispersion per span exceeds 60ps/nm

Measurement of Optical Nonlinear Distortions and Their Uncertainties in Coherent Systems

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Pitfalls of error estimation from measured non-Gaussian nonlinear noise statistics over dispersion-unmanaged systems (Orale)

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Pitfalls of error estimation from measured non-Gaussian nonlinear noise statistics over dispersion-unmanaged systems (Orale)

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Caractérisation expérimentale et extension du model de bruit gaussien pour les systèmes monocanal non gérés en dispersion (Orale)

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Monolithic integrated silicon-based slot-blocker for packet-switched networks

International audienceWe demonstrate a 16-channel, silicon-on-insulator, monolithic integrated slot-blocker. This silicon photonic circuit includes two arrayed waveguide gratings, 16 variable optical attenuators and two vertical fiber couplers. We successfully operate it with 56 Gb/s and 80 Gb/s QPSK optical packets