Title :
Experimental demonstration of crosstalk compensation for super high-density multi-carrier PDM-QPSK signal by MIMO processing
Author :
Hamaoka, Fukutaro ; Saito, Kazuyuki ; Yamamoto, Seiichi ; Matsuda, Tadamitsu ; Naka, Akira
Author_Institution :
NTT Network Service Syst. Labs., Nippon Telegraph & Telephone Corp., Musashino, Japan
Abstract :
It has been experimentally demonstrated that the proposed multiple-input and multiple-output (MIMO) processing compensated for the crosstalk of a super high-density multi-carrier signal consisting of two optical polarisation division multiplexing (PDM) quadrature phase shift keying (QPSK) sub-carriers. Precise frequency spacing of synthesised optical local oscillators has been applied to the proposed MIMO processing. The experimental results show that the sub-carrier spacing can be reduced to 78% of the baud rate of the PDM-QPSK sub-carriers.
Keywords :
optical crosstalk; oscillators; quadrature phase shift keying; MIMO processing; cross-talk compensation; multiple-input and multiple-output processing; optical polarisation division multiplexing quadrature phase shift keying sub-carriers; precise frequency spacing; super high-density multicarrier PDM-QPSK signal; synthesised optical local oscillators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.2296
