Solutions to Mitigate Cross-Phase Modulation Impairment in Coherent Fiber-Optic Communications
Abstract
In this thesis, methods of exploiting and consequently, mitigating the nonlinearities in
Cross-Phase Modulation (XPM) dominated ber-optic communication is suggested using
the model provided by Ciena Corporation. An enhanced Bit Error Rate (BER) per Signal
to Noise Ratio (SNR) is obtained using the solutions provided in this work compared
to the state of the art methods used in Ciena Corporation. Solutions include exploiting
the properties of XPM in order to devise methods to detect the received data with less
probability of error in optical communication and also to come up with new constellation
designs, suitable for XPM-dominated optical channels.
Coherent optical communication and specifically, phase-modulated optical communication
has received much attention due to its higher spectral efficiency and also better
receiver sensitivity. However, due to the optical Kerr effect, two major phase nonlinearities
are added to the phase of the received signal at the end of an optical ber link called
Self-Phase Modulation (SPM) and XPM.
This thesis is focused on XPM dominated ber-optic links and tries to exploit the
properties of XPM in order to obtain a better performance compared to the methods in
which the cancellation of XPM noise is the main objective. Finally, a constellation design
is discussed, considering the model we use in this thesis. Constellation design suitable for
optical communication and in particular, XPM-dominated fiber-optic channels, has already
been a topic of vast research, but the outcome of such efforts is highly dependant on the
model used to produce XPM values. Thus, our work is unique in its own way.
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Cite this version of the work
Nima Abbasi Firoozjah
(2020).
Solutions to Mitigate Cross-Phase Modulation Impairment in Coherent Fiber-Optic Communications. UWSpace.
http://hdl.handle.net/10012/15590
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