In the numerical simulation, some effects were considered such as the walk-off effect,
phase modulation, amplitude modulation of the pump beam, and pump beam quality.
Lin, 2008), complex modulation and multiplexing formats, and optical
phase modulation (Reis et al., 2011; Kim, 2010).
Investigation of FOPA Pump
Phase Modulation Impact on the Idler Spectral Components
In this article devoted to a special issue commemorating 150 years of Maxwell equations, we have singled out Maxwell Stress induced flow-reorientation effect in transparent liquid crystals as a mechanism to produce laser intensity-dependent refractive index changes, and discuss some aspects of the resulting nonlinear
phase modulation and propagation processes.
Non-linear effects have been considered as being generally destructive for long haul fiber optic transmission system [1].Fiber nonlinearities such as self
phase modulation (SPM) and cross
phase modulation (XPM) have drawn significant consideration [2].Dispersion effects can be minimized by utilizing periodic dispersion compensation (DCF) along with standard single mode fiber(SSMF) [3].By doing this bandwidth-length product of optical transmission system link is no more limited by chromatic dispersion(CD)leaving nonlinear effects as main concern.
In this study, the multicarrier chaotic phase coded pulse train signal is designed using the chaotic biphase code for
phase modulation on MCPC pulse train by different modes.
The scheme for two-pulse
phase modulation (TPPM) [12] consists of two pulses of equal length [tau] with phases [phi] and -[phi].
QAM can be viewed as combined amplitude and
phase modulation. When the requirement of data transfer rate exceeds the upper limit 8-PSK can provide, QAM is generally used.
As an efficient constant envelope modulation scheme, continuous
phase modulation (CPM) has gained extensive attention since it was developed in 1980s [1] and has been proven to have outstanding performance in single user [2-5] and multiuser systems [6-9].