研究目的
To reduce the wavelength resources required for intra-rack communication in the data center by proposing a wavelength-reused scheme.
研究成果
The proposed wavelength-reused scheme reduces the required wavelengths by half, saving wavelength resource and relaxing the requirements for the tunable transmits and receivers in each server, achieving error-free operation for both signals.
研究不足
The scheme's feasibility is limited by the total link loss and the maximum coupler ports, which could be further increased with FEC or optical amplifier.
1：Experimental Design and Method Selection:
The study proposes a wavelength-reused scheme where two signals of different modulations are carried by the same optical carrier.
2：Sample Selection and Data Sources:
The scheme is simulated using Optisystem for 62 servers' inter-connection, divided into 31 pairs.
3：List of Experimental Equipment and Materials:
A 64*64 coupler, tunable delay line, and tunable filter are used.
4：Experimental Procedures and Operational Workflow:
The optical carrier is DPSK modulated in the first server and then OOK modulated again in the second server. The signals are broadcast to all servers via a coupler, and each server tunes the tunable filter to pick out the wanted wavelength.
5：Data Analysis Methods:
The performance is evaluated based on bit error rate (BER) and eye diagrams.
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