Экономика и менеджмент \ Управление сетями связи

Main Indices of the OptiX OSN 950. Permitted Frequency Deviation of Optical Input Interface. Output Frequency Precision of Internal Oscillator in Free-Run Mode, страница 5

Item		Unit	Value
Nominal bit rate		kbit/s	STM-64 9953280
Classification code			I-64.1	S-64.2b	Le-64.2	L-64.2b	V-64.2b
Operating wavelength range		nm	1290- 1330	1530- 1565	1530- 1563	1530- 1565	1530- 1565
Transmitter at reference point S	Maximum mean launched power	dBm	–1	2	4	13	15
	Minimum mean launched power	dBm	–6	–1	2	10	12
	Maximum -20dB spectral width	nm	1	ffs	0.3	ffs	ffs
	Optical source chirp	-	ffs	ffs	ffs	ffs	ffs
	Maximum spectral power density	mW/MHz	ffs	ffs	ffs	ffs	ffs
	Minimum side mode suppression ratio	dB	NA	30	30	ffs	ffs
	Minimum extinction ratio	dB	6	8.2	10	8.2	8.2
	Minimum signal-to-noise	NA	NA	NA	26	ffs	ffs
Optical path between MPI-S and MPI-R	Maximum attenuation range	dB	4	11	NA	22	33
	Minimum attenuation range	dB	0	3	NA	16	22
	Maximum chromatic dispersion	ps/nm	3.8	800	1200	1600	2400
	Minimum chromatic dispersion	ps/nm	NA	NA	NA	ffs	ffs
	Maximum passive dispersion compensation	ps/nm	NA	NA	NA	NA	ffs
	Minimum passive dispersion compensation	ps/nm	NA	NA	NA	NA	ffs
	Total mean polarization modulation dispersion (order 1)	ps	30	10	NA	10	30
	Minimum return loss of optical cable at S, including any connectors	dB	14	24	NA	24	24
	Maximum discrete reflectance between S and R	dB	-27	-27	-27	-27	-27
Receiver at reference point R	Minimum sensitivity	dBm	–11	–14	–22.5	–14	–23
	Maximum overload	dBm	–1	–1	–9	–3	–7
	Maximum optical path penalty	dB	1	2	NA	2	2
	Maximum reflectance of receiver, measured at R	dB	–14	–27	NA	–27	–27
Note: N/A: not applicable. Such parameters are not required. ffs: for further study. Currently such parameters are not specified by international standards. They are now given by the equipment supplier but subject to further specification of international standards. V-64.2a uses PDC for dispersion accommodation, while L-64.2b uses SPM for dispersion accommodation.

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