International Core Journal of Engineering 2020-26 | Page 121

Foundation of China (NSFC) (61671306) and Fundamental
Research Project of Shenzhen (JCYJ) (20160328145357990).
bitwise XOR between the XOR encoded trace of Fig.5 (c).
Fig.5 (g) exhibits time trace after photoelectric conversion.
As can be seen from the results, the trace of Data B can also
be successfully retrieved at synchronous and asynchronous.
Fig.5 (h) illustrates eye diagrams after the decoding proccess
happening on the second XOR gate at synchronous and
asynchronous. It can be inferred that the retrieved time trace
of the sub-bit times-offsets of 0.5bit is better than 0.25bit. It
is the same as the previous conclusion.
R EFERENCES
[1]
[2]
[3]
V. C ONCLUSIONS
A new all-optical physical layer network coding scheme
applied to ToR passive optical interconnect is presented in
this article. Two OOK signals with same wavelength
modulate onto 100 Gb/s subcarriers and operate in 20Gb/s
transmission rate. Through the Saganac-based all-optical
XOR gate to perform codec operations at the ToR and the
receiving end, the codec operations are all realised in the
optical domain. It decreases half of the wavelength resources
occupancy and reduces the delay caused by complex signal
processing in the electrical domain.
[4]
[5]
[6]
[7]
A CKNOWLEDGMENT
This work was supported by the National Natural Science
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