Title :
In-band interferometric estimation of OSNR for PolMux QPSK signals with unknown filter history
Author :
Chitrik, N. ; Oh, J.M. ; Nelson, L.E. ; Brodsky, M.
Author_Institution :
AT&T Labs., Middletown, NJ
Abstract :
We find a large range of interferogram delay for which OSNR estimation is correct to within 1.5 dB for 46 Gbps PolMux QPSK. This permits accurate OSNR measurement without a priori knowledge of the filter shape.
Keywords :
light interferometry; multiplexing; optical fibre communication; optical fibre filters; optical fibre polarisation; optical modulation; quadrature phase shift keying; OSNR measurement; PolMux QPSK signals; bit rate 46 Gbit/s; in-band interferometric estimation; optical filter; optical signal-to-noise ratio; Autocorrelation; Delay; History; Multi-stage noise shaping; Noise shaping; Optical filters; Optical interferometry; Optical noise; Quadrature phase shift keying; Signal to noise ratio;
Conference_Titel :
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the
Conference_Location :
Acapulco
Print_ISBN :
978-1-4244-1931-9
Electronic_ISBN :
978-1-4244-1932-6
DOI :
10.1109/LEOS.2008.4688729
