This part of the SJ/T 11856 series applies to EML chips for 10 Gbaud NRZ, 25 Gbaud NRZ/PAM4 and 50 Gbaud NRZ/PAM4 optical communication applications.

It gives requirements for key parameters such as wavelength, side-mode suppression ratio, spectral width, bandwidth, extinction ratio and output power, while also defining screening, factory inspection and type inspection procedures for production and delivery control.

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