| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 16, Number 1, 2020
|
|
|---|---|---|
| Article Number | 13 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1186/s41476-020-00135-6 | |
| Published online | 03 June 2020 | |
Research
Complimentary code keying of spectral amplitude coding signals in optical buffering with increased capacity
1
School of Electrical and Computer Engineering, Nanfang College of Sun Yat-Sen University, No. 882, Wenquan Ave., Conghua Dist., 510970, Guangzhou, Guangdong Province, China
2
College of Intelligence, National Taichung University of Science and Technology, No. 129, Sec. 3, Samin Rd., North Dist., 404, Taichung City, Taiwan
Received:
10
November
2019
Accepted:
21
May
2020
Signal buffering services such as contention resolution and congestion avoidance are essential in optical packet switching networks. In this paper, an optical memory scheme based on spectral amplitude coding (SAC) and complementary code keying (CCK) is proposed to increase the buffer capacity. CCK is applied to packet buffering by selecting an available code set and encoding the payload bits with either an SAC signal or its complementarity. The capacity constraint is effectively released, as the usable codes for queuing packets are twice those for the conventional code-domain buffers. To minimize system costs by reducing the codec number, a shared structure based on an arrayed waveguide grating (AWG), which is capable of processing both the typical and complimentary coded signals simultaneously, is also investigated.
Key words: Optical packet switching / Spectral amplitude coding (SAC) / Complementary code keying (CCK) / Optical buffering
© The Author(s) 2020
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