Performance analysis of DPSK direct detection optical systems in the presence of interferometric intensity noise

Nonlinearly broadened phase-modulated continuous-wave laser frequency combs characterized using DPSK decoding

“…Ref. [26] reports that 75 MHz laser linewidth results in ~1 dB power penalty at BER=10 -9 for a 10 GHz DPSK system. Since the upper bound for our linewidths are well below this 75 MHz figure, we attribute the degradation of the DDF comb under DPSK operation to other mechanisms.…”

<title>Photonic switch size limitations imposed by phase noise from semiconductor optical amplifiers</title>

“…It can be shown that those power densities can be given by To evaluate the bit error rate (BER) we assume that the distribution of the noise n(t) is approximately Gaussian. In this case, it can be shown 6 BER = (14) where p(A) is the probability density function of random variable L4 , which is Gaussian with variance .…”

Chromatic dispersion monitoring for next generation optical networks

“…where P 0 is the average optical power at the interferometer input, m is the modulation index of the RF tone, f RF is the frequency of the RF tone, ω c is the optical carrier angular frequency, and θ(t) is the modulating phase. Then the electrical fields at the output of the constructive and destructive arms of the DI can be written in the following matrix expression [113]:…”