Active Demultiplexer-enabled Directly Modulated DMT Transmission Using Optical Frequency Combs for Data Center Interconnects
نویسندگان
چکیده
In this paper, we experimentally demonstrate an optical frequency comb (OFC) based transmitter, employing directly modulated active demultiplexers, for data center interconnects. The results validate that the proposed transmitter has potential to achieve aggregate rates of 100 Gb/s (8 × 12.5 Gb/s) and 200 25 systems 4- 16- quadrature amplitude (QAM) discrete multi-tone (DMT) modulation. An OFC on externally injected gain switched laser (EI-GSL) is used, providing excellent stability flexibility in free spectral range (FSR). followed by injection locked demultiplexer, which not only filters, but also amplifies individual tones, thus alleviating need external amplifier boost low powered tones. Using configuration, a successful transmission Gb/s/λ 4-QAM DMT 16-QAM signals over 40 km SSMF, respectively. addition, show it possible filter modulate lines are 20 dB below peak, whilst achieving BER hard decision (HD-) FEC limit 3.8e-3. This flattening or expansion feature leads significant increase channel count, turn provides reduction energy consumption footprint transmitter.
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ژورنال
عنوان ژورنال: Journal of Lightwave Technology
سال: 2021
ISSN: ['0733-8724', '1558-2213']
DOI: https://doi.org/10.1109/jlt.2021.3091959