Tài liệu Fibre optic communication systems P3 pptx
Tài liệu Fibre optic communication systems P3 pptx
... commu-
nication channel. The major component of optical transmitters is an optical source.
Fiber -optic communication systems often use semiconductor optical sources such as
light-emitting diodes ... 45
◦
with
Chapter 3
Optical Transmitters
The role of the optical transmitter is to convert an electrical input signal into the cor-
responding optical signal and then launch it into the opti...
Tài liệu Fibre optic communication systems P1 doc
... of the resulting optical signal. Most digital lightwave systems employ OOK in
combination with PCM.
1.3 Optical Communication Systems
As mentioned earlier, optical communication systems differ ... communication systems currently use optical
fibers, the commonly used term for them is fiber -optic communication systems. The
term lightwave system is also sometimes used for fiber -...
Tài liệu Fibre optic communication systems P2 pdf
... an optical pulse would broaden on propagation
inside the fiber.
In some optical communication systems, the frequency spread ∆
ω
is determined
by the range of wavelengths ∆
λ
emitted by the optical ... guiding
23
Fiber -Optic Communications Systems, Third Edition. Govind P. Agrawal
Copyright
2002 John Wiley & Sons, Inc.
ISBNs: 0-471-21571-6 (Hardback); 0-471-22114-7 (Electronic)
68
C...
Tài liệu Fibre optic communication systems P4 doc
... nonetheless useful for optical communication
systems simply because of their higher sensitivity. Receiver sensitivity is an important
issue in the design of lightwave systems and is discussed ... fluctuations in all optical receivers even when the incident optical power
P
in
is constant. Of course, additional noise is generated if P
in
is itself fluctuating be-
cause of noise produced by...
Tài liệu Fibre optic communication systems P5 doc
... progress
Chapter 5
Lightwave Systems
The preceding three chapters focused on the three main components of a fiber -optic
communication system—optical fibers, optical transmitters, and optical receivers. In
this ... constitute a basic element of all communication systems,
including LANs, MANS, and other distribution networks.
5.2 Design Guidelines
The design of fiber -optic communicati...
Tài liệu Fibre optic communication systems P6 ppt
... numbers.
Chapter 6
Optical Amplifiers
As seen in Chapter 5, the transmission distance of any fiber -optic communication sys-
tem is eventually limited by fiber losses. For long-haul systems, the loss ... Several kinds of optical amplifiers were
developed during the 1980s, and the use of optical amplifiers for long-haul lightwave
systems became widespread during the 1990s. By 1996, optical am...
Tài liệu Fibre optic communication systems P7 ppt
... Chapter 6 that with the advent of optical amplifiers, fiber losses
are no longer a major limiting factor for optical communication systems. Indeed, mod-
ern lightwave systems are often limited by the ... are unsuitable for long-haul systems for which GVD
must be compensated along the transmission line in a periodic fashion. What one needs
for such systems is an all-optical, fiber-based,...
Tài liệu Fibre optic communication systems P8 docx
... Channel selection through a tunable optical filter.
8.2 WDM Components
The implementation of WDM technology for fiber -optic communication systems re-
quires several new optical components. Among them ... a device acts as an “optical tap”
as it leaves the contents of the WDM signal intact.
Chapter 8
Multichannel Systems
In principle, the capacity of optical communication systems can...
Tài liệu Fibre optic communication systems P9 pdf
... optical solitons
into a practical candidate for modern lightwave systems [5]–[9]. In this chapter we fo-
cus on soliton communication systems with emphasis on the physics and design of such
systems. ... of
solitons in optical fibers and their use for optical communications were suggested in
1973 [2], and by 1980 solitons had been observed experimentally [3]. The potential
of solitons fo...
Tài liệu Fibre optic communication systems P10 ppt
... aspects of coherent lightwave systems
are reviewed in Section 10.6 where we also discuss the status of such systems at the
end of 2001.
478
Fiber -Optic Communications Systems, Third Edition. Govind ... phase coherence of the optical carrier plays
an important role in the implementation of such schemes, such optical communica-
tion systems are called coherent lightwave systems. Coher...
Từ khóa:
- tài liệu active american idioms p 1 pptx
- tài liệu bài giảng luật dân sự pptx
- tài liệu kỹ thuật nuôi đuông dừa pptx
- đáp án tai liêu trắ nhiệm khí cụ điện pptx
- tài liệu windows communication
- tài liệu autonomous systems
- tài liệu hướng dẫn sử dụng word 2010 part 16 pptx
- tài liệu hướng dẫn sử dụng word 2010 part 20 pptx
- tài liệu hướng dẫn sử dụng word 2010 part 25 pptx