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, Yimeng Wang, Wei Li, Rong Hu, Zhixue He, Ming Luo, Qi Yang, 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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