Overview:
In this project, I led the design and development of a 4.25G optical fiber module, specifically a Small Form-factor Pluggable (SFP) module. The project involved creating detailed schematic diagrams and a 4-layer printed circuit board (PCB) layout using the industry-standard Altium Designer software.
Following the design phase, a prototype of the optical fiber module was manufactured and assembled. The prototype underwent rigorous electrical and optical testing to evaluate its functionality and performance, ensuring it met the required specifications.
While mass production of the module in Iran was deemed impractical due to the extensive manufacturing capabilities of Chinese factories in this domain, the project provided invaluable practical experience in the design and evaluation processes of optical fiber modules.
The optical fiber module incorporated various critical components, including:
- ROSA (Receiver Optical Sub-Assembly): Responsible for receiving and converting the optical signal into an electrical signal.
- TOSA (Transmitter Optical Sub-Assembly): Responsible for converting the electrical signal into an optical signal for transmission.
- Limiting Amplifier: A specialized amplifier circuit that amplifies the received electrical signal while limiting its amplitude within a specified range.
- Laser Driver: A circuit
The PCB circuit design for the project, which integrated these components and other necessary circuitry, is shown in the provided image. Through this project, I gained hands-on experience in the end-to-end process of designing, prototyping, and evaluating a high-speed optical fiber module. Despite the limitations in mass production capabilities, the project served as a valuable learning opportunity, enhancing my skills in PCB design, optical fiber technology, and the integration of various components required for optical communication systems.
Scope:
- Design analog/digital hardware and Optical
- Design PCB(Altium Designer)
- Signal Integrity
- Mechanical Design
- Create a low power, high efficiency, compact design
- Debugging and Testing
