Chromatic Dispersion Tolerance of the SSB-Modulated Signals

Analysis of signed chromatic dispersion monitoring by waveform asymmetry for differentially-coherent phase-modulated systems.

We analytically study received waveform asymmetries induced by chromatic dispersion (CD) for signed CD monitoring in differential quadrature phase-shift keying (DQPSK) systems and show that the asymmetries are results of differential detection and the ±π/4 phase shifters used in conventional DQPSK receivers. The theoretical insights developed help explain various published results on signed CD ...

Chromatic Dispersion Monitoring of Optical OFDM Signals in Flexible Optical Networks

A chromatic dispersion monitoring scheme for flexible optical OFDM networks is presented. Coded label subcarriers are added to the signal spectrum and dispersion monitoring is performed via direct detection, followed by electronic correlation procedures. OCIS codes: (060.0060) Fiber optics and optical communications

Review of Chromatic Dispersion Measurements Techniques

Chromatic dispersion measurements require experimental conditions which meet with particular difficulties, that is, a wide spectral coverage and a picosecond time resolution over a kilometer-length fiber. This paper shows what makes of these measurements an experimental challenge and the main solutions found since the tate seventies are reviewed. Pulse propagation, interferometric and phase-shi...

Multiple access interference elimination with enhanced chromatic dispersion tolerance in SAC OCDMA

The modulated dispersion hypothesis confirmed in humans.

Conventional teaching suggests that the initiation of arrhythmias requires an initiating “trigger” and a suitable “substrate.” Moreover, the hallmark of electro-anatomic substrates for reentrant arrhythmias is spatially heterogeneous structural or electrophysiological properties. The fundamental requirement of heterogeneous refractory properties is not a new concept and was recognized by the ea...