This standard specifies the terms and definitions, classifications, technical requirements, test methods, inspection rules, and requirements for Encasement, transportation and storage of optical Power Meters. It is suitable for photoelectric type optical Power Meters used in optical communication for measurement of optical Power, and can also be referred to for Miscellaneous field. The standard describes the performance requirements and test methods of optical Power Meters in detail to ensure the accuracy and Reliability of the instrument in optical Power measurement.