Theoretical analysis of photoparametric amplifier
A fundamental requirement in the design of an optical receiver is the achievement of high sensitivity and broad bandwidth. These two features are very important in getting reliable system. In this project a receiver circuit based on Photo parametric Amplifier (PPA), which is one of the alternat...
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| 格式: | Thesis |
| 语言: | English English English |
| 出版: |
2010
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| 主题: | |
| 在线阅读: | http://eprints.uthm.edu.my/3592/1/24p%20MAJDI%20FARAG%20MOHAMMED%20ELBIREKI.pdf http://eprints.uthm.edu.my/3592/2/MAJDI%20FARAG%20MOHAMMED%20ELBIREKI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/3592/3/MAJDI%20FARAG%20MOHAMMED%20ELBIREKI%20WATERMARK.pdf |
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| 总结: | A fundamental requirement in the design of an optical receiver is the achievement of
high sensitivity and broad bandwidth. These two features are very important in getting
reliable system.
In this project a receiver circuit based on Photo parametric Amplifier (PPA),
which is one of the alternative for receiver detection and amplification techniques is
fully described. The PPA mode of operation involves optical detection and amplification
within a single device. It is able to provide selectivity and sensitivity at the same time, as
required for wireless optical communications.
The most common problem that any communication system might face is the
noise which must be eliminated or at least reduce it. In order to reduce the noise, filters
have been implemented before the signal is passing into an amplifier. In this project Up
converter has been placed at the transmitter circuit in order to obtain high frequency,
while at the receiver side, filters has been placed with Down converter to obtain the
desired frequency.
The first method is to use Matlab software in implement is the Up and Down
converters circuits at the receiver. The second method is to use Optiwave software in
implement is the photo parametric amplifier circuit. Photo diode PIN type has been used
to detect any coming signal at the receiver circuit. Results showed that the output signal
has been improved; with more strength power and noise reduction which showe that
photo parametric amplifier is more reliable and suitable to be used in wireless optical
communication system. |
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