研究目的
Evaluating the frequency response of a coaxial packaged photodiode for use in microwave photonics experiments and verifying its application in an optoelectronic oscillator.
研究成果
A low-cost PIN photodiode was successfully used at 10.5 GHz, proving that a coaxial can package, not originally designed for this application, is still usable at frequencies above 3 GHz. The ability to use more affordable photodetectors opens up new possibilities for experiments previously limited by the high cost of devices.
研究不足
The study focuses on a specific type of photodiode and its application in microwave photonics experiments. The scalability and applicability of the findings to other types of photodiodes or systems are not explored.
1：Experimental Design and Method Selection:
The study evaluates the frequency response of a coaxial packaged photodiode and its application in an optoelectronic oscillator. The design of an electric circuit for the photodiode is presented.
2：Sample Selection and Data Sources:
An InGaAs PIN photodiode in a coaxial can package is used. The response is measured using a Rohde&Schwarz ZVA67 vector network analyzer (VNA).
3：List of Experimental Equipment and Materials:
InGaAs PIN photodiode, Rohde&Schwarz ZVA67 VNA, LP2985 low-noise low-dropout voltage regulator, Rogers RO4350B PCB, SMA, FC/APC, BNC connectors.
4：Experimental Procedures and Operational Workflow:
The photodiode's frequency response is measured relative to a reference photodiode. The photodiode is then used in an optoelectronic oscillator to verify its application.
5：Data Analysis Methods:
The response is analyzed using the VNA, and the results are compared to a reference photodiode.
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