Signal quality

Showing 1 - 8 of 8 results

Noise Concatenation in Optical Amplifier Chains

Optical networks are the backbone of the internet, carrying vast amounts of data over great distances at the speed of...

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March 26, 2025

Q and dBQ : A Walkthrough

Q is the quality of a communication signal and is related to BER. A lower BER gives a higher Q and thus...

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March 26, 2025

Method to Resolve the Adjacent-Channel Interference in 100G Transmission.

In a non-coherent WDM system, each optical channel on the line side uses only one binary channel to carry service information. The service transmission...

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March 26, 2025

Measuring Coherent System OSNR using integral method

For coherent signals with wide optical spectrum, the traditional scanning method using an OSA or inband polarization method (EXFO) cannot...

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March 26, 2025

What are main advantages and drawbacks of EDFAs?

The main advantages and drawbacks of EDFAs are as follows. Advantages Commercially available in C band (1,530 to 1,565 nm)...

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March 26, 2025

What is Optical Power Requirement and margin for a optics module’s power?

Optical power tolerance: It refers to the tolerable limit of input optical power, which is the range from sensitivity to...

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March 26, 2025

How to know if errors are due to linear or non-linear issue in an optical link?

When the bit error occurs to the system, generally the OSNR at the transmit end is well and the fault...

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March 26, 2025

HD-FEC & SD-FEC differences

Items HD-FEC SD-FEC Definition Decoding based on hard-bits(the output is quantized only to two levels) is called the “HD(hard-decision) decoding”,...

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March 26, 2025

Signal quality

Noise Concatenation in Optical Amplifier Chains

Q and dBQ : A Walkthrough

Method to Resolve the Adjacent-Channel Interference in 100G Transmission.

Measuring Coherent System OSNR using integral method

What are main advantages and drawbacks of EDFAs?

What is Optical Power Requirement and margin for a optics module’s power?

How to know if errors are due to linear or non-linear issue in an optical link?

HD-FEC & SD-FEC differences

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