Title :
Measurement of OSNR in the presence of partially polarized ASE
Author_Institution :
AT&T Labs. Res., Middletown, NJ, USA
Abstract :
We investigate the effect of partially polarized amplified spontaneous emission (ASE) on the measurement and interpretation of the optical signal-to-noise ratio (OSNR) using the polarization-nulling method. OSNR measurement is widely used to estimate bit-error rate (BER) in transparent photonic networks, but we find that significant errors in OSNR and in estimated BER could occur if the degree of ASE polarization becomes high.
Keywords :
error statistics; optical fibre networks; optical fibre polarisation; optical noise; superradiance; BER; OSNR; amplified spontaneous emission; bit-error rate; optical signal-to-noise ratio; partially polarized ASE; polarization nulling; transparent photonic networks; Bit error rate; Monitoring; Optical fiber networks; Optical filters; Optical noise; Optical polarization; Power measurement; Signal to noise ratio; Stimulated emission; Wavelength measurement; Optical performance monitor; optical signal-to-noise ratio (OSNR); photonic networks; polarization-dependent loss (PDL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.839392
