ELEC3875 Bachelors Project
Optical receiver
Project Proposal Form
2022-23
Section 1: Project Description
Briefly, describe the basic background area, aims and objectives of your project (approx 600 words):
basic background area:
With the advent of the information age and the increasing demand for high bandwidth and high speed data transmission, fiber optic communication has become the main means of transmitting large amounts of data, especially in long distance communication and high speed internet applications. Especially in LIDAR (Light Detection and Ranging System), optical receivers are used to detect the reflected back light signals and thus calculate the information such as distance, shape and speed etc. LIDAR is widely used in autonomous driving, UAV navigation and robot vision, which requires optical receivers with high sensitivity, fast response and high dynamic range performance. With the development of technologies such as 5G, Internet of Things (IoT), and satellite Internet, the need for high-performance optical receivers is becoming more pressing. These technologies require receivers to be miniaturized, intelligent, and able to operate at lower power consumption for portable and embedded applications, and these optical receivers, not only require devices that can operate under low light intensity conditions, but also require good anti-interference capabilities in complex environments.
Aims and Objectives:
Underwater communications can encounter significant difficulties such as increased signal attenuation, reduced penetration, massive absorption and significant interference. Penetration, massive absorption and significant interference, all of which lead to degradation of signal quality. Together, these problems shrink the communication range and complicate the system architecture, thus degrading the performance of RF technology. So, in this research , i would like to study an optical receiver for the reason that optical communication for underwater applications can provide more advantages such as high bandwidth, low attenuation small, less interference, better directionality, more security, and resistance to electromagnetic interference. Firstly, by reading through the various texts, I wanted to first find the most suitable optical communication for underwater use by using LEDs with different wavelengths of the same light color; then I also needed to find a suitable photodetector and compare the responsiveness, bandwidth, noise, and so on in order to support me in designing a better quality optical receiver. In addition to this, with the development of technology nowadays, is it possible to add artificial intelligence to the receiver, so that it can be measured autonomously at any time, so that the optical receiver is always in the best operating condition. Signal amplifier and filter design, I need to convert the detected photoelectric signals into electrical signals, in this process I need filters to eliminate the noise. Of course, in optical communication, receivers are generally required to demodulate the received signals, so it is also necessary to study how to improve the performance of optical receivers by optimizing the demodulation technique, including improving the anti-interference ability and reducing the bit error rate.
The goal of this BEng project is to design and optimize a high-performance optical receiver that can meet the needs of application scenarios such as optical communication, sensing and detection. Through experiments and theoretical analysis, we investigate how to improve the sensitivity, bandwidth and anti-interference ability of the optical receiver. Optical receivers are made to perform. better in signal conversion and processing by exploring new materials, structures and algorithms.
Section 2: Gantt Charts
Your Gantt chart should have clear timescales and relate to your progress milestones:
Section 3: Preliminary Resources Estimate
Please supply as much information as you can (at this stage) about the resources you are likely to need.
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Will your project require the use of allocated bench space in a laboratory? Yes/No yes
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Is your project likely to need the help of the Faculty Mechanical Workshop? Yes/No (If ‘Yes’, describe briefly what this may involve)
no
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Is your project likely to need the help of the Faculty Electronics Workshop? Yes/No (Typically for printed circuit boards)
yes
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Will you need any special IT support? Yes/No no
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Are you likely to need to purchase any special electronic components? Yes/No no
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Section 4: Societal factors:
Before completing this section, please refer to the notes on " Societal impacts” part of the handbook.
Sustainability:
How will you consider Sustainability aspects in your project (if relevant)? Justify why if you think “Sustainability” is non-relevant to your project.
Environmental Sustainability
Environmentally friendly materials: When designing optical receivers, prioritize environmentally friendly materials, such as recyclable, low-toxicity or biodegradable materials, to reduce environmental impact.
Modularized design: Design maintainable and upgradable optical receiver modules to avoid scrapping the entire device and reduce e-waste.
Energy Sustainability
High-performance design
Reduce energy consumption: Optimize circuit and algorithm design to reduce the power consumption of optical receivers.
Social Sustainability
Affordability: Design affordable optical receivers so that more businesses or users can afford to use systems such as LIDAR, especially in areas with limited resources.
Global sharing of technology: Promote open-source technology or standardized designs to facilitate global sharing of optical receiver technology and promote the overall development of society.
Reduce social risks: Optimize the application of optical receivers in autonomous driving, drones and industrial control to enhance their reliability and reduce possible safety accidents.
Ethics:
Please select one of the options below. Please refer towww.leeds.ac.uk/ethics
Is the proposed project is believed to raise any ethical issues? Yes/No
If ‘Yes’, which one(s)? if “No” justify your answer?
No
Risk management:
Identify, evaluate and risks (the effects of uncertainty) associated with your project and explain how you will mitigate their impacts.
Since optical receiver design involves complex technologies such as high-precision components (e.g., photoelectric sensors and filtering circuits), signal processing algorithms, etc., it may result in a design solution that cannot be realized as expected or performs substandard.
Impact:
Project schedule is delayed.
Receiver fails to achieve desired sensitivity or accuracy.
Mitigation Measures:
Conduct a technical feasibility study at the beginning of the project to verify the feasibility of key technologies.
Use modular design to break down complex problems into manageable sub-problems.
Prepare alternatives in advance, such as using off-the-shelf commercial photovoltaic components in lieu of hard to-achieve self-developed parts.
Equality, diversity and inclusivity:
How will you consider equality, diversity and inclusivity aspects in your project (if relevant)? Justify why if you think these are not applicable to your project.
If the project involves presenting research, taking an inclusive approach can ensure that everyone has equal access to learning opportunities. I can use easy-to-understand language and format in project documentation and presentations.
The use of optical receivers in areas such as surveillance, facial recognition or monitoring may raise ethical issues related to inclusion and equality (e.g., misuse of the technology). Avoidance in design may have an unequal impact on certain groups.