Stable 100-Gb/s POLMUX-DQPSK Transmission With Automatic Polarization Stabilization

Boffi, Pierpaolo; Ferrario, Maddalena; Marazzi, L.; Martelli, Paolo; Parolari, P.; Righetti, A.; Siano, R.; Martinelli, Mario

doi:10.1109/lpt.2009.2016758

Cited by 20 publications

(6 citation statements)

References 7 publications

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“…At the end facets of the chip, the waveguide was directly coupled with a lensed fiber with no on-chip mode adaptor. Transmission performance was evaluated by means of bit-error-rate (BER) measurements on two orthogonally polarized channels with a 2 7 À 1 pseudorandom bit sequence (PRBS) in a system test bed [18], [19]. After propagation in the device, TE-and TM-polarized signals where polarization demultiplexed and each one was detected by a pair of integrated unbalanced Mach-Zehnder interferometers [20] to recover the DQPSK symbol constellation.…”

Section: Pulse Synchronization In Poldm-dqpsk Formatmentioning

confidence: 99%

Tunable Delay Lines in Silicon Photonics: Coupled Resonators and Photonic Crystals, a Comparison

et al. 2010

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In this paper, we report a direct comparison between coupled resonator optical waveguides (CROWs) and photonic crystal waveguides (PhCWs), which have both been exploited as tunable delay lines. The two structures were fabricated on the same silicon-on-insulator (SOI) technological platform, with the same fabrication facilities and evaluated under the same signal bit-rate conditions. We compare the frequency- and time-domain response of the two structures; the physical mechanism underlying the tuning of the delay; the main limits induced by loss, dispersion, and structural disorder; and the impact of CROW and PhCW tunable delay lines on the transmission of data stream intensity and phase modulated up to 100 Gb/s. The main result of this study is that, in the considered domain of applications, CROWs and PhCWs behave much more similarly than one would expect. At data rates around 100 Gb/s, CROWs and PhCWs can be placed in competition. Lower data rates, where longer absolute delays are required and propagation loss becomes a critical issue, are the preferred domain of CROWs fabricated with large ring resonators, while at data rates in the terabit range, PhCWs remain the leading technology

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Section: Pulse Synchronization In Poldm-dqpsk Formatmentioning

confidence: 99%

Tunable Delay Lines in Silicon Photonics: Coupled Resonators and Photonic Crystals, a Comparison

et al. 2010

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“…At the CO coherent homodyne detection is implemented by means of the seed exploited as local oscillator. Single polarization detection is experimented either by exploiting an active polarization controller [11,12] or by using a 90° polarization rotation due to the employment of a Faraday rotator at the input of a low-polarization dependent gain RSOA in order to achieve a retracing path for the polarization [10]. To reduce the optical beat noise between ONUs sharing the same wavelength seed it would be possible to exploit a balanced coherent detection [13] or a notch optical filter (NOF) combined to single-ended coherent detection.…”

Section: Passive Optical Networkmentioning

confidence: 99%

FDM exploitation for next access and data networks

Gatto

Parolari

Boffi

2017

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

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“…Simultaneous transmission of modulated signals over the horizontal and vertical polarizations of the electrical field is a well established technique [1][2][3] that allows to improve spectral efficiency by using the same frequency twice. In its essence, this technique relies upon the principle of MIMO (Multiple Input Multiple Output) systems, that have become popular after the seminal paper [4].…”

Section: Introductionmentioning

confidence: 99%

Upper and lower bounds to the information rate transferred through the Pol-Mux channel

Spalvieri¹,

Reggiani²,

Dossi³

2018

Opt. Express

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Pol-Mux transmission is a well established technique that enhances spectral efficiency by simultaneously transmitting over horizontal and vertical polarizations of the electrical field. However, cross-coupling of the two polarizations impairs transmission. Under the assumption that the cross-coupling matrix is a Markov process with free-running state, we propose upper and lower bounds to the information rate that can be transferred through the channel. Simulation results show that the two bounds are tight for values of the cross-coupling power of practical interest and modulation formats up to 16-QAM (quadrature amplitude modulation).

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Stable 100-Gb/s POLMUX-DQPSK Transmission With Automatic Polarization Stabilization

Cited by 20 publications

References 7 publications

Tunable Delay Lines in Silicon Photonics: Coupled Resonators and Photonic Crystals, a Comparison

Tunable Delay Lines in Silicon Photonics: Coupled Resonators and Photonic Crystals, a Comparison

FDM exploitation for next access and data networks

Upper and lower bounds to the information rate transferred through the Pol-Mux channel

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