IEC 62572 pdf download.Fibre optic active components and devices – Reliability standards – Part 3: Laser modules used for telecommunication
1 Scope
This part of IEC 62572 deals with reliability assessment of laser modules used for telecommunication. The aim of this standard is – to establish a standard method of assessing the reliability of laser modules in order to minimize risks and to promote product development and reliability; – to establish means by which the distribution of failures with time can be determined. This should enable the determination of equipment failure rates for specified end of life criteria. In addition, guidance is given in IEC TR 62572-2.
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions For the purposes of this document the following definitions apply. 3.1 .1 laser module packaged assembly containing a laser diode with/without photodiode Note 1 to entry: The module may also include a cooler and temperature sensor to enable laser temperature to be controlled and monitored. The optical output is normally via an optical fibre pigtail. 3.1 .2 submount substrate upon which a laser diode or photodiode may be mounted for assembly into the laser module Note 1 to entry: Components on submounts are also subject to qualification testing. 3.1 .3 laser module manufacturer LMM manufacturer of laser modules who provides devices meeting the requirements of the relevant detail specification (DS) and the customer’s reliability requirements 3.1 .4 network operator NO organization which operates a telecommunications network 3.1 .5 system supplier SS manufacturer of telecommunications/data transmission equipment containing optoelectronic semiconductor lasers Note 1 to entry: The system supplier can be a laser module customer. 3.1 .6 system operator SO network operator of telecommunications/data transmission equipment containing opto- electronic semiconductor lasers in the transmission path Note 1 to entry: The system may also be part of other more extensive systems, for example telecommunications, rail, road vehicles, aerospace or weapons. 3.1 .7 capability qualifying components CQC components selected to represent critical stages of the process and limiting or boundary characteristics of mechanical and electro-optic design
4 Laser reliability and quality assurance procedure
4.1 Demonstration of product quality This standard (where required by the specification) gives the minimum mandatory requirements and is part of a total laser reliability and quality assurance procedure adopted by the laser module manufacturer. It also provides guidance on the activities of system suppliers and system operators and provides feedback on field performance to laser module manufacturers and system suppliers. The laser module manufacturer shall be capable of demonstrating, by means of qualification approval of devices, technology approval or capability approval of the manufacturing process, the following: a) a documented and audited manufacturing process including the qualification of purchased components in accordance with an internationally recognized quality management system; b) a performance qualification programme, including for example, accelerated life testing, burn-in and screening of components and modules; c) a qualification maintenance programme to ensure continuity of reliability performance;d) a procedure to provide feedback on reliability issues to development and production. 4.2 Testing responsibilities 4.2.1 General The testing detailed in Table 1 and Table 2 is to be performed by the laser module manufacturer and component suppliers (where applicable). Additional testing may be specified in the specification. 4.2.2 Recommendation applicable to laser customer/system supplier The system supplier is recommended to have a programme to analyse and verify the results including failure analysis. This programme includes an independent life test of fully packaged laser modules (see Table 2, test 1 and/or test 2 and 3 and/or test 5 (sample size >1 0 per test)). 4.2.3 Recommendation applicable to system operator The system operator is recommended to have a programme to monitor and report field failure rates in sufficient detail to enable the system supplier and laser module manufacturer to initiate any necessary corrective actions at an early stage in the lifetime of a product. Suppliers may have different approaches (i.e. to reliability concepts) during the development of product maturity, and resource limitations may dictate testing strategies. Alternative tests and activities to those specified are permitted, provided the LMM/SS/SO can show intent to remove end-product failures and the associated failure mechanisms. However, this will require significant data to substantiate compliance.
IEC 62572 pdf download
