to minimize the impact of IFWM [100, 126–128] and significant improvements in
transmission have been predicted. One should point out, however, that constrained
coding generally requires an increase in symbol rate, which may offset the
advantages brought by the code because of a higher required optical signal-
to-noise ratio (OSNR) or, at high SEs, because of a broader signal spectrum.
2.3 ELECTRO-OPTIC MODULATOR TECHNOLOGIES
As data rates in optical communication systems have traditionally been limited by
the speed of available opto-electronic components, it is of utmost importance to
always consider practical aspects of modulation and detection hardware when
designing optical modulation formats. Finding the most cost-effective modulation
technique ...