西门子可靠性培训资料.pptVIP

hiT 7500 Multi-Haul DWDM system Product Reliability Update Processes, Status, and Measures Siemens Reliability Process Overview Product Reliability Assurance Process Reliability Control and Improvement Cross-functional team established to install focused program Close interaction with the supplier for design, technology and process Early failure monitoring and feedback in development phase Extended testing including temperature cycling in production Detailed failure monitoring in production for early corrective action Predicted FIT rates vs. field return FIT rates Functional Partition of OLI Optical amplification via EDFA gain block Pump diodes Monitor diodes EDF-Heater Internal Gain Switch OSC splitting functions as Add / Drop of the OSC channel using wavelength selective couplers Splitting of monitor signals at the input and output port and at intermediate measurement points Spectral shaping of the signal using a VOA for setting the EDFA to an optimized operating point GTC for tilt compensation Optical monitor ports at input and output for signal supervision APSD circuitry Gain Control and Supervision (DSP, on-board processor) Electrical components for control and power supply Mechanics including PCB Siemens Reliability Process Overview Estimation of FIT Rates for Optical Components Example of FIT Rate Adaption: EDFA w/ 5 pumps Example of FIT Rate Calculation for an Optical Amplifier Provided by the EDFA Supplier (1) Example of FIT Rate Calculation for an Optical Amplifier Provided by the EDFA Supplier (2) Siemens Reliability Process Overview Reliability of Basic Booster (OLISTBNC):Contribution of Component Group Reliability of Standard Booster (OLITBNC):Contribution of Component Group Siemens Reliability Process Overview Siemens Reliability Process Overview Reliability Calculation of OLI FIT Rates - Improvements Information and Communication Networks 9,82 5,46 1,08 7,64 10,91 6,00 0,00 8,00 9,82 5,46 1,08 7,64 10,91 6,00 0,00 8,00 M. Chbat, S. Eberlin, M. Toc