This testing program primarily adheres to a series of authoritative domestic and international standards for optical modules and components. These include international standards such as the IEEE 802.3 series-which specifies requirements for optical interfaces at specific data rates-and ITU-T recommendations (e.g., ITU-T G.957) regarding the characteristics of optical components.
Industry-standard Multi-Source Agreement (MSA) specifications, such as SFP+ MSA and QSFP28 MSA, also explicitly define the test conditions and requirements for transmitter optical return loss tolerance. Regarding domestic standards, the YD/T series issued by the Ministry of Industry and Information Technology of the People's Republic of China (e.g., YD/T 1352-2021, "Test Methods for Optical Modules") provides detailed operational guidelines. These standards and specifications serve as the foundational documents guiding the testing process, ensuring the uniformity of test methods and the impartiality and comparability of results.
