Abstract
A novel orthogonal modulation scheme of polarization-shift-keying label over vestigial sideband payload is
proposed and experimentally demonstrated over a 43-Gb/s all-optical-label-switching transmission. With this scheme,
a high extinction ratio of the label is reached, while a spectral efficiency of 0.8 b/s/Hz is achieved by weakening
the imperfection of the high-speed pulse sequence in polarization modulation. Furthermore, this modulation scheme is
relatively irrelevant with payload bit rate. The payload and label penalties after 80-km NZDSF fiber transmission
and label erasure are 1.5 and 1 dB, respectively. The influence of filter center frequency offset is also
investigated. Besides, a label rewriting method is introduced to simplify label processing in intermedia nodes. All
these results show that this scheme can be a candidate technique for the next-generation optical network.
© 2007 IEEE
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