Jj. Lepley et al., Excess penalty impairments of polarisation shift keying transmission format in presence of polarisation mode dispersion, ELECTR LETT, 36(8), 2000, pp. 736-737
Experimental results are presented which show that in a fibre link with pol
arisation mode dispersion (PMD) the polarisation shift keying (PolSK) trans
mission format suffers from an excess sensitivity penalty due to signal dep
olarisation when compared with the intensity modulated format. The excess p
enalty is 3dB when the PMD is 30% of the bit period.