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Journals and Conferences
We propose space-time codes to mitigate mode dependent loss in spatial division multiplexed optical transmission systems using multi-mode fibers. The codes can replace or complement mode scrambling used to reduce loss disparities between the modes. OCIS codes: 060.2330 Fiber optics communications, 060.4230 Multiplexing.
In mode-division multiplexed (MDM) transmission systems, mode coupling is responsible for inter-modal crosstalk. We consider the transmission of modulated signals over a few-mode fiber (FMF) having low mode coupling and large differential mode group delay in the presence of a non-ideal fiber connection responsible for extra mode coupling. In this context,… (More)
We experimentally demonstrate the joint use of OFDM and channel flattening effect provided by a Fabry-Perot filter to allow higher than 25 Gbit/s direct intensity modulated, directly detected transmission over up to 75 km SSMF. OCIS codes: (060.4510) Optical communications; (130.2035) Dispersion compensation devices.
High spectral efficiency in wavelength-division multiplexing (WDM) coherent optical communications can be achieved by lowering the channel spacing to a value close to the baud rate. As a result, such communication systems are subject to a high level of two-dimensional (2D) interference, originating from both chromatic dispersion (CD) within WDM channels and… (More)
We numerically investigate the multi-channel transmission performance of Polarization Switched Quadrature Phase Shift Keying (PS-QPSK) and we compare it to the performance of Polarization-Division-Multiplexed QPSK (PDM-QPSK), using Root Raised Cosine (RRC) spectral shaping, in the context of a flexible channel grid. We point out the impact of the roll-off… (More)
This paper refers to the generation and analysis of data sequences called pseudo-random binary sequences witch show very interesting properties. To emulate a real traffic data transmission using DPSK modulation format with four levels of phase, we are moving towards pseudo-random binary sequence. In particular, we will focus on the autocorrelation function… (More)
This paper treats the performances of an optical telecommunication system functioning with the 40 Gbit/s flow by a numerical analysis of the physical effects limiting the light guided propagation. The format studied here is a DQPSK modulation format (Differential Quaternary Keying Phase-Shift). It allows a transmission of information on four different… (More)