Reference no: EM133143822
CIS049-2 Microwave and Optical Communications - University of Bedfordshire
Optical communications
Learning outcome 1: Understand and contrast fundamental concepts, terminology and techniques in modern microwave and optical communications
Learning outcome 2: Use appropriate tools to design and analyse microwave and optical communication systems based on real-world problems.
TASK
Answer all the questions below and present your answers in a clear and concise technical report.
1. A Design an optical communication system operating at a minimum of 50Mb/s. Choose from the following components to design the network.
i. GaAlAs laser diode operating at 50nm and capable of coupling 1mW into a fiber.
ii. Ten sections of optical cable each of which is 500m long and has a 4-dB/km attenuation.
iii. Connector loss of 2dB/connector.
iv. Splice loss of 1dB/splice
v. A pin photodiode receiver with a sensitivity of -45dBm.
vi. An avalanche photodiode receiver with a sensitivity of -56dBm.
a) Show a block diagram of your designed system, justify your selection.
b) Analyse your system using excel to demonstrate that the link budget of the designed system meets the requirements.
c) Plot variation in power with distance from transmitter to receiver.
d) Repeat the optical link design if an inline amplifier with gain of 10 is available. Use link budget to calculate the maximum distance possible.
2. Implement your system designed in Problem 1 using Optisim simulation tools. Discuss necessary assumptions.
a) Explain all the blocks in your system setup, justify your selection.
b) Analyse your system performance using Optisim to demonstrate that system is working satisfactorily.
c) Compare the performance of simulated system with the system designed in Problem 1, analyse the differences.