Engineering Specifications; Optical Signal-To-Noise Ratio Specifications - Fujitsu 1FINITY L100 User Manual

System Description and Engineering

Engineering Specifications

1.8
Engineering Specifications
In this section:
1.8.1

Optical Signal-to-Noise Ratio Specifications

1.8.2 L100 Specifications
1.8.3 L110 Specifications
1.8.4 L160 Specifications
1.8.5 4x16 Splitter/Coupler Specifications
1.8.1
Optical Signal-to-Noise Ratio Specifications
From Release 2.6, L100 Blade introduces an enhanced Optical Signal-to-Noise Ratio (OSNR) performance feature.
This feature provides improved levels of optical power for both flexible grid and fixed 50-GHz applications with
the following benefits:
■ Reachability is enhanced especially for signals greater than standard 50 GHz.
■ Signal quality is improved. The signal quality improves the Pre-FEC BER and provides enhanced network
resiliency to network transients.
The OSNR enhancement setting is at the NE level and is mainly for a new build network. System alarms against
any span level interface if the OSNR setting is different between spans (adjacent nodes). By default, OSNR
enhancement setting is disabled. In some cases, changing the OSNR setting on a running system may impact the
signal traffic.
Note: Fujitsu recommends any change to the OSNR setting on a running system be performed during a
maintenance window.
Note: OSNR setting must be enabled in L100 Blade to support interoperability with L130 Blade.
Table 2
Example of OSNR Enhancement at 200 Gb/s Signal
Signal Type and Modulation
75 GHz, 2A8PSK
50 GHz, 16QAM
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Release 19.1.1 Issue 1.1, May 2021
1.8.6 Pluggable Transceiver Modules
1.8.7 Power Specifications
1.8.8 1FINITY Housing
1.8.9 C-Band Fequencies and Wavelengths
Reach
OSNR Setting OFF (Default)
■ Maximum reach: 1368 km
■ At 19-dB spans: 1368 km
■ Maximum reach: 770 km
■ At 19-dB spans: 760 km
OSNR Setting ON
■ Maximum reach: 1850 km
■ At 19-dB spans: 1824 km
■ Maximum reach: 840 km
■ At 19-dB spans: 836 km
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