الفهرس 
General Introduction and Background on Optical Communication SystemsOnly 14 pages are availabe for public view
 |  | from | 140 |  |  |
| | | from | 140 | | |
Abstract
This thesis is in the region of, high speed telecommunication systems where all
optical technologies are being acquainted with satisfy regularly expanding need for data
transfer capacity, by replacing the costly electro-optical conversion modules. In such
systems, all-optical routers are the key advances equipped for supporting networks with
high capacity/bandwidth just as offering lower power consuming. One of the essential
building blocks in all-optical routers/networks is the semiconductor optical amplifier (SOA),
which is utilize in for clock extraction, wavelength conversion, all-optical gates and all-optical
processing .
The SOAs are ideal for optical amplification and optical switching at an extremely fast.
This is due to their small size, a low switching energy, non-linear characteristics and the
seamless integration with other optical gadgets. Therefore، characterization of the SOA
operational functionalities and optimization of its performance for amplification and signal
processing are primary and challenging task.
This thesis is ultimately and entirely concerned with nonlinear effects of semiconductor
optical amplifiers. In present photonic networks, the semiconductor optical amplifiers are
utilized in a lot of application such as wavelength conversion. Wavelength conversion based
for nonlinearity effects of semiconductor optical amplifiers. The important three nonlinearity
effects are, Cross Gain Modulation (XGM). Cross Phase Modulation (XPM) and Four Wave
Mixing (FWM).
This theory presents various unique commitments to the information that are summarized as
follows:
Proposing a new wavelength conversion modal based to XGM, the new modal generate,
inverted and noninverted wavelength conversion signal, by using single traveling wave
semiconductor optical amplifier.
Suggest a new method of how to perform a wavelength conversion process. It is useful
to make wavelength conversion process into serious of different nonlinear effects rather
than single nonlinear effect, the outcome from new modal Outperform traditional
methods.
Study the FWM effect, and channel separation affected by FWM.