الفهرس 
HYBRID BISTABLE OPTICAL DEVICESOnly 14 pages are availabe for public view
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Abstract
The aim beyond this thesis is a two fold: first to
present a unified study of the integrated bistable optical
devices and second to extend the study of the stability
analysis of these devices.
chapter one
presents different types of bistable
optical
devices.
It briefs the
of hybrid
devices.
advantages
of using
It shows the benefits
technology devices.in manufacturing these
eXAmples of using bistable optical devices in building
optical components.
Chapter two reviews hybrid bistable optical devices.
Steady state characteristics are explained in detail.
Dynamic characteristics of mirrorless hybrid devices are
explained in brief. The proposed configuration of two
parallel feedback signals is considered. Stability analysis
and transient response- of this configuration are given.
Hybrid devices with delayed feedback are presented.
Stability analysis of this type shows that it can operate
as optical regenerative oscillator.
normal bistable optical device.
ChApter three presents a unified
dynamic performance of bistable hybrid
integration
It givws
It can also work -as a
approach to the
optical device. A
nonlinear optical transmission element and a feedback loop consisting of a detector, amplifier, and a filter can be
u••d to represent most of the proposed configurations of
hybrid bistable devices. The values of the parameters of
the filter
transfer function can correspond to the
following configurations:
• a. A detector followed by an R-C circuit.
• b. A detector followed by two amplifiers in parallel.
• c. Two detectors with two R-C circuits followed by an
amplifier.
• d. A detector followed by a delay element and an
amplifier.
Stability analysis of small signal deviation from a
steady state operation point provides information about :
• a. The possible modes of operation.
• b. Estimation of the pulsation frequency.
• c. Estimation of the switching time.
a.The modes of operation are controlled by :
• The relative time constant ( Tl/T2 ).
• The optical input power ( Pi ).
• The effective overall gain of the feedback circuit
(Z).
b.Th. pulsation frequency is a function of :
• The relative time constant ( Tl/T2
• The optical input power ( Pi )
• The characteristics of the nonlinear optical device.
c.The switching time of the device is improved by :
• Decreasing ( Tl/T2 ).
.• Increasing ( Z ).