15 May 2015 Demonstration of a spectrum efficient 8×1.25  Gb/s electrical code-division multiplexing passive optical network based on wavelet packet transform coding
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Abstract
An electrical code-division multiplexing passive optical network (ECDM-PON) method is proposed in which a spectrum-efficient orthogonal coding based on wavelet packet is used. Comparing to the normal Walsh or Gold code which had been used widely in ECDM-PON systems, the proposed coding can reduce bandwidth by about 40% at 8×1.25  Gb/s, which can reduce the optical devices’ bandwidth of the whole system. The principle of the coding is shown. Through experiments, a 1.25  Gb/s per channel by 8-channels downstream transmission of a 10  Gb/s ECDM-PON demonstrates the efficiency of our proposed system. Only 6-GHz bandwidth is enough for transmitting the 8×1.25  Gb/s signal using our proposed method which, achieves a spectrum efficiency of about 1.67  bit/s/Hz. Error free transmission is achieved using 8-chip electrical codes over 20-km standard single mode fiber (SSMF).
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jilong Han, Jilong Han, Yimeng Wang, Yimeng Wang, Wei Li, Wei Li, Rong Hu, Rong Hu, Zhixue He, Zhixue He, Ming Luo, Ming Luo, Qi Yang, Qi Yang, Shaohua Yu, Shaohua Yu, "Demonstration of a spectrum efficient 8×1.25  Gb/s electrical code-division multiplexing passive optical network based on wavelet packet transform coding," Optical Engineering 54(5), 056104 (15 May 2015). https://doi.org/10.1117/1.OE.54.5.056104 . Submission:
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