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HomeFreeWhat are performance parameters on Transponders?

What are performance parameters on Transponders?

Last Updated: August 16, 2025
2 min read
85

Usually Transponders have following optical parameters to monitor:

Optical power receives.

Normalized optical power receive.

Optical power receive (minimum).

Optical power receive (maximum).

Optical power receive (average).

Optical power transmit.

Optical power transmit (minimum).

Optical power transmit (maximum).

Optical power transmit (average).

Optical power receive OTS.

Normalized optical power receive OTS.

Optical power receive OTS (minimum).

Optical power receive OTS (maximum).

Optical power receive OTS (average).

Differential group delay (average).

Differential group delay (maximum).

Code violations, OTU, near end receive.

Errored seconds, OTU, near end receive.

Severely errored seconds, OTU, near end receive.

Severely errored frame seconds, OTU, near end receive.

FEC corrections, OTU, near end receive.

High correction count seconds, OTU, near end receive.

Pre-FEC BER, OTU, near end receive.

Pre-FEC BER (maximum), OTU, near end receive.

Post-FEC BER estimates, OTU, near end receive.

Q min, OTU, near end receive.  This represents the Q low water mark.

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Q max, OTU, near end receive.  This represents the Q high water mark.

Q average, OTU, near end receive.  This represents the average Q during the measured interval.

Q standard deviation, OTU, near end receive. This represents the standard deviation of the Q during the measured interval.

Uncorrected FEC block, OTU, near end receive.

Code violations, ODU, near end receive.

Errored seconds, ODU, near end receive.

Severely errored seconds, ODU, near end receive.

Unavailable seconds, ODU, near end receive.

Failure count, ODU, near end receive.

Sanjay Yadav

Optical Communications & Network Automation Expert | Author of 3 Books for Optical Engineers | Founder, MapYourTech

Optical networking engineer with nearly two decades of experience across DWDM, OTN, coherent optics, submarine systems, and cloud infrastructure. Founder of MapYourTech.

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