We give an analytical expression to evaluate the optical eye diagram due to polarization-mode dispersion (PMD), polarization-dependent loss (PDL), and chromatic dispersion (CD) for a system of highly mode coupled fiber with lumped section at any given optical pulse sequence. We found that with considering PDL and the polarization direction correlation between PMD and PDL, a system with highly mode coupled fiber and lumped section can have either higher or lower Q-factor than a highly mode coupled system with same root mean square PDL/PMD values. Also we noticed that a system of two highly mode coupled fibers connected together is not equivalent to a system of highly mode coupled fiber when fluctuation is considered.
An analytic model is reported to evaluate the electric output signals and their variance (Eye Diagram) for multi channel high-speed DPSK fiber optical system in presence of polarization mode dispersion (PMD), polarization dependent loss (PDL) and chromatic dispersion (CD). It is also found that even under linear cross talks, the balanced receiver output show a strong asymmetric phenomenon if adjacent channels are non synchronous.
We present an analytical method to evaluate the effect of EDFA amplifier noise on the optical eye diagram for the system having PMD, PDL and CD in dynamic fiber links for any given optical pulse sequence. The method considers a single EDFA amplifier at the end of a fiber and considers all orders of PMD and PDL of the fiber. It gives the time dependent average output light intensity as well as its corresponding variations as a function of the amplifier noise, PMD, PDL and CD. Also the performance of the system is discussed for various parameters as well as the effect of OSNR on the system's Q-factor.
The effect of input pulse chirp on the optical eye diagram
for communication systems having highly mode coupled PMD, PDL and
CD is reported via analytical evaluation. It is shown zero chirped
input pulse is not always the best choice. As well, we study the effect of duty cycle of the input pulse on the optical eye diagram for communication systems.
KEYWORDS: Polarization, Dispersion, Optical fibers, Single mode fibers, Signal attenuation, Birefringence, Solids, Monte Carlo methods, Telecommunications, Lawrencium
We report the autocorrelation function (ACF) of polarization dependent loss (PDL) in optical systems having polarization mode dispersion (PMD). A characteristic PDL ACF is derived. It is shown that the PDL autocorrelation bandwidth is proportional to the inverse of the mean PMD and the proportionality constant is a function of mean PDL. Monte Carlo simulations of the autocorrelation functions confirm the analytical results.
A new generalized Poincare sphere method is proposed to measure the complex principal states of polarization vector for a system with polarization dependent loss or gain. The spectral resolved measurements with our propsoed test-set agree with the well known Jones eigenvalue analysis method.
We present an analytical study of the output intensity fluctuations caused by the polarization mode dispersion (PMD) and the polarization dependent loss (PDL). An analytical expression for the Jones matrix autocorrelation function (ACF) in presence of the PMD and PDL is derived. The analytical ACF can be applied to different modulation formats leading to the analytical evaluation of the eye diagram.
The autocorrelation function (ACF) for the direction of the principal state of polarization (PSP) vector is reported. The analytical results are compared with the simulation results. It is shown that the magnitude and the directional ACF of the PSP vector are not independent. The directional correlation bandwidth for the PSP vector is verified to be narrower than that of the PSP magnitude.
A combination of polarization mode dispersion (PMD) and polarization dependent loss (PDL) in a fiber optic system will lead to a complex principal state vector. We report the autocorrelation function (ACF) for such a complex principal state vector. It is shown that the correlation bandwidth decreases with the increasing PDL.
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