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In directly modulated VCSEL (DM-VCSEL)-based, end-to-end real-time, 11.25Gb/s optical OFDM (OOFDM) systems utilizing legacy OM1/OM2 multimode fibres (MMFs) as well as simple intensity-modulation and direct-detection (IMDD), detailed experimental explorations are undertaken, for the first time, of the effectiveness of various optical launching conditions including centre launching and conventional...
We present a 10-Gb/s, 1×4 optical link based on a DRAM-integration-ready bulk-silicon modulator for multi-drop CPU-DRAM interconnects. The bulk-silicon modulator operated at 10 Gb/s on a die, and at 5 Gb/s in a QFP package. The 1×4 optical link was limited not by signal integrity but by optical power budget, demonstrating its scalable capacity for the future multi-drop memory bus.
Recent real-time optical OFDM (OOFDM) research progress is reviewed extensively in terms of adaptive transceiver design, intensity modulators, synchronisation techniques and network architectures. Results indicate that OOFDM is feasible for mass deployment in PONs.
Low-cost, narrow modulation bandwidth, un-cooled VCSELs can be utilized to directly modulate 64-QAM-encoded 11.25Gb/s signals for end-to-end real-time optical OFDM transmission over 25km SSMF IMDD systems with excellent performance robustness.
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