This part of the SJ/T 11856 series applies to VCSEL chips used in 10 Gbaud NRZ, 25 Gbaud NRZ and 25 Gbaud PAM4 optical communication applications.

It provides practical requirements for product qualification and delivery inspection, including optical-electrical performance measurement, bandwidth testing, relative intensity noise testing, environmental adaptability tests and rules for screening, factory inspection and type inspection.

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