Cisco Systems ONS 15200 manual Optical Performance, Optical Frequencies

Chapter 6 Engineering Specifications

Optical

Table 6-1 System Parameters (continued)

Parameter	Condition	Maximum	Unit
Number of unprotected channels	No optical protection (16 A-side	32	Channels
	channels and 16 B-side
	channels)
Number of mixed fiber-protected and	Sum of 2 * # (fiber-protected	32	Channels
unprotected	channels) + # (unprotected
	channels)

6.2 Optical

This section describes optical performance, frequencies, and signal loss.

6.2.1 Optical Performance

Table 6-2provides information about ONS 15200 optical performance.

Table 6-2 System Performance

Parameter	Condition	Minimum	Unit
Maximum optical dispersion tolerance	At 2.0 dB optical penalty	3000	ps/nm
(very long-range transmitter)
Maximum optical dispersion tolerance	At 2.5 dB optical penalty	1800	ps/nm
(long-range transmitter)
Maximum optical dispersion tolerance	At 2.0 dB optical penalty	1800	ps/nm
(medium-range transmitter)

6.2.2 Optical Frequencies

Table 6-3shows how the sixteen optical channels are spaced.

Table 6-3 Channel Spacing

				Frequency	Wavelength
			ITU Channel	(THz)	(nm)
23				192.3	1558.98
25				192.5	1557.36
27				192.7	1555.75
29				192.9	1554.13
31				193.1	1552.52
33				193.3	1550.92
35				193.5	1549.32
37				193.7	1547.72
		Cisco ONS 15200 Product Description
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