Cisco Optical Network Planner Configuration Guide, Releases 26.x.x

Modify fiber couple properties

Updated: March 9, 2026

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Overview

General properties of a fiber couple
Physical and factors properties of a fiber couple
Totals properties of a fiber couple

Overview

Teaches you how to modify fiber couple properties. Follow these detailed step-by-step instructions carefully to ensure the specific configuration is applied correctly and securely within your network.

Use this procedure to modify the properties of a fiber couple.

Before you begin

Procedure

	1.	Open the network where you want to modify the fiber couple properties.
	2.	Choose Network > Entity Editor.
	3.	Click the Fiber tab in the Entity Editor window.
	4.	Choose the fiber and drill down to the fiber couple, and modify the required properties. For the property descriptions, refer to: General properties of a fiber couple Physical and factors properties of a fiber couple Totals properties of a fiber couple
	5.	Click Update.

General properties of a fiber couple

This table describes various general properties of an optical fiber couple.

Table 1. General fiber couple properties
Property	Platform	Description	Available options	Default
General			â€”	â€”
Name	NCS 2000 NCS 1010 NCS 1001	By default, fiber couple is named based on the fiber name followed by COUPLE-AZ or COUPLE-ZA. The sides that are connected by the fiber couple are indicated inside brackets. The name is noneditable.	â€”	â€”
Source Side	NCS 2000 NCS 1010 NCS 1001	Displays the source side name. This field is noneditable.	â€”	â€”
Destination Side	NCS 2000 NCS 1010 NCS 1001	Displays the destination side name. This field is noneditable.	â€”	â€”
Length	NCS 2000 NCS 1010 NCS 1001	Automatically displays the span length of the fiber connecting a source and destination side. Change the span length manually, if necessary. You can enter the different span length and loss values for the individual fibers in a fiber couple.	â€”	â€”

Physical and factors properties of a fiber couple

This table describes various physical and factors properties of an optical fiber couple.


Property	Platform	Description
Physical
Tot SOL Loss w/o connectors	NCS 2000 NCS 1010 NCS 1001	Enter the start of life fiber loss value for each span, excluding the connector concentrated loss.
Connector Loss A	NCS 2000 NCS 1010	Connector Loss at Source Site [dB]
Connector Loss B	NCS 2000 NCS 1010	Connector Loss at Destination Site [dB]
Factors
PMD coefficient	NCS 2000 NCS 1010 NCS 1001	Displays the PMD coefficient.
Loss coefficient [dB]	NCS 2000 NCS 1010 NCS 1001	Enter the value of the SOL fiber loss per kilometer used to calculate the loss of each span in the network.

Totals properties of a fiber couple

This table describes various Totals properties of an optical fiber couple. The properties under Totals are noneditable

Table 2. Totals properties
Property	Platform	Description	Available options	Default
Loss EOL	NCS 2000 NCS 1010 NCS 1001	Displays the total loss EOL calculation.	â€”	â€”
Loss SOL	NCS 2000 NCS 1010 NCS 1001	Displays the total loss SOL calculation.	â€”	â€”
CD C-Band	NCS 2000 NCS 1010 NCS 1001	Displays the total chromatic dispersion for the C-band.	â€”	â€”
QD C-Band	NCS 2000 NCS 1010 NCS 1001	Displays the secondary order dispersion for C-band.	â€”	â€”
RD	NCS 2000 NCS 1010 NCS 1001	Displays the random dispersion value.	â€”	â€”
PMD	NCS 2000 NCS 1010 NCS 1001	Displays the Polarization Mode Dispersion (PMD) value.	â€”	â€”

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