I've read paper describing using different post processing method to minimize the impact of polarization mode dispersion (PMD) in a polarization sensitive optical coherence tomography (PSOCT) system. Some of them describe that the system has a PMD of 85 fs. I wonder how could people measure the PMD in a PSOCT (in the form of SSOCT).

On the other hand, I read something in optical communication describing that for 10 Gbps speed system, a few ps PMD is tolerable (below 7ish). A PSOCT in the form of SSOCT, the data transformation speed usually is 1 Gbps. In this case, why a few tens - 100 fs PMD will be a great matter? How should I value if the PMD in my system is a critical issue that impacts the retardance quality?

Thanks!

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