Please Note that the Question one parts C and D you need to draw graphs
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Answer all the questions below and present your answers in a clear and concise technical report.
An optical power of 150µW is launched in an optical fibre. The optical fibre has an attenuation of 0.52dB/km. Determine the maximum possible length of the optical link without having the signal amplified. The minimum optical power which can be detected by an optical detector on the receiver side is 2µW. Every 10km an optical fibre joint (optical fibres interconnect) is required with an attenuation of 1.5dB.
Use excel to make the link budget of the system
Show a clear diagram of your system
Plot variation in power with distance from transmitter to receiver
Repeat the design of the link if an inline amplifier with gain of 10 is available.
The material dispersion parameter for a glass fibre is 20 ps/(nm-km) at a wavelength of 1.5µm. An injection laser source with a peak wavelength of 1.5 µm and an rms spectral width of 2 nm couples light into a 30 km length of the fibre.
Estimate the pulse broadening due to material dispersion.
Make the rise-time budget for the system
What is the maximum allowable bit-rate for RZ ?
Calculate the required rise time for the receiver
Answer all the questions below and present your answers in a clear and concise technical report.
An optical power of 150µW is launched in an optical fibre. The optical fibre has an attenuation of 0.52dB/km. Determine the maximum possible length of the optical link without having the signal amplified. The minimum optical power which can be detected by an optical detector on the receiver side is 2µW. Every 10km an optical fibre joint (optical fibres interconnect) is required with an attenuation of 1.5dB.
Use excel to make the link budget of the system
Show a clear diagram of your system
Plot variation in power with distance from transmitter to receiver
Repeat the design of the link if an inline amplifier with gain of 10 is available.
The material dispersion parameter for a glass fibre is 20 ps/(nm-km) at a wavelength of 1.5µm. An injection laser source with a peak wavelength of 1.5 µm and an rms spectral width of 2 nm couples light into a 30 km length of the fibre.
Estimate the pulse broadening due to material dispersion.
Make the rise-time budget for the system
What is the maximum allowable bit-rate for RZ ?
Calculate the required rise time for the receiver
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