This standard specifies the technical requirements, test methods, quality evaluation procedures, marking, packaging, storage, and other conditions for the "Fiber Broadband Coupler" and "Fiber Wavelength Division Multiplexing Coupler" series products of all fiber branching devices. This standard is applicable to the design, production, inspection, and use of single-mode fiber broadband couplers and fiber wavelength division multiplexing couplers. 2. The following standards contain provisions that, through reference in this standard, constitute provisions of this standard. At the time of publication of the standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 2828-1987 Batch inspection, counting, sampling procedures and tables (applicable to continuous batch inspection) GB 2421-1989 Basic environmental testing procedures for electrical and electronic products General requirements YDT 826-1996FC-PC type single mode fiber optic cable movable connectors Technical conditions YDT 893-1997 Fiber optic coupler Technical conditions YDT 895-1997sC/PC type single mode fiber optic cable movable connectors Technical requirements and testing methods YD/T 964-19981310nm/1550nm wavelength division multiplexer IEC 61300-3-2 (1999) Basic testing and measurement procedures for fiber optic interconnecting devices and passive components - Part 3-2 Inspection and measurement - Polarization related losses of single mode fiber optic devices - Definitions. This standard adopts the following definitions. 3.1 Port belongs to the optical signal input or output port of the optical passive device. 3.2 Fiber optic branching device is an optical passive device that couples and redistributes optical signals between two or more fibers
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China