e/Carrier-Suppressed Return-to-Zero

Information
has gloss	eng: Carrier-Suppressed Return-to-Zero (CSRZ) is an optical signal format. In CSRZ the field intensity drops to zero between consecutive bits (RZ), and the field phase alternates by π between neighbouring bits, so that if the phase of the signal is e.g. 0 in even bits (bit number 2n), the phase in odd bit slots (bit number 2n+1) will be π, the phase alternation amplitude. In its standard form CSRZ is generated by a single Mach–Zehnder modulator (MZM), driven by two sinusoidal waves at half the bit rate BR, and in phase opposition. This gives rise to characteristically broad pulses (duty cycle 67%).
lexicalization	eng: Carrier-suppressed return-to-zero
instance of	e/Fiberoptic communication