Title :
Small-signal analysis of amplitude-, phase-, and polarization-to-intensity conversion in general optical linear systems with application to PMD compensation
Author :
Bononi, Alberto ; Orlandini, Alessandra
Author_Institution :
Dipt. di Ingegneria dell´´Informazione, Univ. di Parma, Italy
fDate :
3/1/2005 12:00:00 AM
Abstract :
A general small-signal model for amplitude-, phase-, and polarization-to-intensity conversion in optical systems affected by chromatic dispersion, polarization-mode dispersion (PMD), and polarization-dependent loss (PDL) is presented, which extends a previous scalar model by Wang and Petermann . The model leads to simple intensity filters, which can be expressed as a linear combination of the components of the Stokes´ vector of the signal input state of polarization (ISOP), and facilitates the prediction of the ISOPs, which minimize/maximize the intensity modulation on the output signal. The model is first used to study the output intensity in a first-order PMD-compensated single-channel system with either input amplitude, or phase, or polarization modulation. The small-signal model provides a good prediction of the received intensity up to modulation indexes of about 20%-30%, according to the modulation type. The model is then successfully used in a semianalytical bit-error rate (BER) evaluation method to estimate the system penalty induced by cross-phase modulation (XPM) in a two-channel wavelength-division-multiplexed (WDM) dispersion-managed system with PMD compensation.
Keywords :
error statistics; intensity modulation; optical fibre communication; optical fibre dispersion; optical fibre filters; optical fibre losses; optical fibre polarisation; optical modulation; phase modulation; wavelength division multiplexing; PMD compensation; Stokes vector; amplitude modulation; amplitude-to-intensity conversion; chromatic dispersion; cross-phase modulation; dispersion-managed system; general optical linear systems; input polarization state; intensity filters; intensity modulation; modulation index; phase modulation; phase-to-intensity conversion; polarization modulation; polarization-dependent loss; polarization-mode dispersion; polarization-to-intensity conversion; scalar model; semianalytical bit error rate evaluation; single-channel system; small-signal analysis; system penalty; two-channel wavelength-division multiplexed system; Bit error rate; Chromatic dispersion; Intensity modulation; Linear systems; Nonlinear optics; Optical filters; Optical losses; Optical polarization; Polarization mode dispersion; Predictive models; Nonlinearity; optical fibers; polarization; polarization-mode dispersion (PMD); polarization-mode dispersion (PMD) compensation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.839976