SJ/T 11856.1-2022 specifies the technical requirements for Fabry-Perot and distributed feedback semiconductor laser chips used as light sources in optical fiber communication systems.

It covers terminology, abbreviations, classification, optoelectronic performance, chip material, surface quality, dimensions, reliability requirements, test methods, inspection rules, packaging, marking, product instructions and storage.

The standard applies to FP-LD and DFB-LD chips used in 10 Gbaud NRZ, 25 Gbaud NRZ and 25 Gbaud PAM4 optical communication systems, providing a practical basis for product design, manufacturing control, testing and delivery acceptance.

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