DS DS/EN 61280-2-9
DS DSEN 61280-2-9 2009-JUN-12 Fbre optc communcaton subsystem test procedures - Part 2-9 Dgtal systems - Optcal sgnal-to-nose rato measurement for dense wavelength-dvson multplexed systems
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This part of IEC 61280 provides a parameter definition and a test method for obtaining optical signal-to-noise ratio (OSNR) using apparatus that measures the optical spectrum at a multichannel interface. Because noise measurement is made on an optical spectrum analyzer, the measured noise does not include source relative intensity noise (RIN) or receiver noise.