Delayed Self-Heterodyne Test of a Dispersive Semiconductor Laser Field

Beat-note power spectral density (PSD) of a dispersive semiconductor laser field in the delayed self-heterodyne test is derived by combining the effect of fiber's chromatic dispersion with differential time delay, taking laser's intensity noise (IN) into account, and assuming standard single-mode fiber (SSMF) as an optical channel. This generalized PSD, as it is proven, has asymmetric spectrum due to the high correlation between the dispersive phase noise and the induced IN that is introduced due to channel response. This paper expands our knowledge of the interaction between laser fields with optical channel as well as improving penalty analyses in pilot-aided multicarrier systems such as optical OFDM.