Differences between eSFP and SFP optical modules

SFP is a small form-factor pluggable module and eSFP is an enhanced small form-factor pluggable module. There is no difference between their major functions and services. They are interchangeable as long as they have the same optical power, sensitivity, and distance. The difference is that the eSFP optical module provides more extra functions than the SFP optical module. For example, the eSFP optical module supports optical power monitoring but the SFP optical module does not support optical power monitoring.

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