Definición |
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| Sector : Normalización (UIT-T) |
| Abreviatura : Ninguna |
| Término : [optical signal-to-noise ratio penalty due to differential group delay] |
| Definición : [An optical signal that has been subject to a differential group delay (DGD) requires a larger optical signal-to-noise ratio (OSNR) at the receiver to achieve BER = 10–12 than an optical signal which has not been affected by DGD, assuming the same receiver input power in both cases. This OSNR difference is called the OSNR penalty due to DGD. In this case no second order polarization mode dispersion (SOPMD) is considered. NOTE – For applications where FEC bytes are required to be transmitted, the BER of 10–12 is required to be met only after the error correction (if used) has been applied. The BER at the input of the FEC decoder for these cases can therefore be significantly higher than 10–12.] |
| Publicaciones : UIT-T G.666 (02/2011) |
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