530 APPENDIX E. SOFTWARE PACKAGE
Optical Time Domain Visualizer 1.0Optical Spectrum Analyzer 1.0 Optical Spectrum Analyzer 1.0Nonlinear Dispersive Fiber 1.0
Length = 10 kmOptical Time Domain Visualizer 1.0User Defined Bit Sequence Generator 1.0RZ Pulse Generator 1.0Laser Rate Equations 1.0
Frequency = 193.1 THz
Power = 0 dBmFigure E.1: An example of the layout for studying the propagation of optical pulses inside
optical fibers. All the components are available in the standard component library supplied with
the OptiSystem Lite software.
output of the laser or the modulator is connected to an “optical time-domain visualizer”
and an “optical spectrum analyzer” so that the input pulse shape and spectrum can be
observed graphically. The optical bit stream is transmitted through a fixed length of
optical fiber whose output is again connected to the two visualizers to record the pulse
shape and its spectrum. If the nonlinear effects are turned off, the spectrum should not
change but the pulse would exhibit considerable broadening. For Gaussian pulse, the
results would then agree with the theory of Section 2.4.
There are a large number of prepared samples that the user can use to understand
how the program functions. On most computers, they will be stored in the directory
“C:/Program Files/Optiwave/OptiSystem Lite 1.0/Book.” Folders in this directory are
named “Samples” and “Technical Descriptions.” There are subfolders within the “Sam-
ples” folder for individual chapters which contain problems that can be solved by using
the software. Most users of this book will benefit by solving these problems and ana-
lyzing the graphical output. A portable-data format (PDF) file is also included for each
chapter within the folder “Technical Descriptions”; it can be consulted to find more
details about each problem.