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Work item:
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G.707/Y.1322
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Subject/title:
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Network node interface for the synchronous digital hierarchy (SDH)
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Status:
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Approved on 2007-01-09
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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Rev.
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Equivalent number:
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-
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Timing:
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-
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Liaison:
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-
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Supporting members:
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-
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Summary:
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This Recommendation describes the geometrical, mechanical, and transmission attributes of a single-mode optical fibre and cable with zero-dispersion wavelength shifted into the 1550 nm wavelength region. This is the latest revision of the Recommendation that was first created in 1988. This revision creates a new category of the fibre having a reduced PMD link design value of 0.20 ps/Ökm, in order to accommodate systems with higher bit rate/distance products than had been possible with prior revisions. This revision is intended to maintain the continuing commercial success of this fibre in the evolving world of high-performance optical transmission systems.
This revision clarifies chromatic dispersion characteristics in Table 2 (G.653.B). This category limits the chromatic dispersion coefficient by a pair of bounding curves vs. wavelength for the range of 1460 nm to 1625 nm. The extension to these wavelengths is intended to provide information to support coarse wavelength division multiplexing applications which do not have significant nonlinear impairments.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
Unknown
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Last update:
2007-01-04 14:19:50
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