IEC\/TR 62627-03-03, which is a technical report, describes the investigation results of high-power reliability for metal-doped optical fibre plug-style attenuators.<\/p>\n
This report contains the high-power test results for metal-doped optical fibre SC plug-style optical attenuators, the thermal simulation results and the analysis of degradation modes, long-term reliability test results under high-power conditions and the derivation of maximum limit of optical power for guaranteeing long-term operation.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Outline of high-power test for optical attenuators in IEC\/TR 62627-03-02 <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4 Accuracy of the internal temperature estimated by the thermal simulation Figures Figure 1 \u2013 Split-sleeve surface temperature measurement system on high-power input condition for the SC plug style attenuators by Yamaguchi et al. <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Figure 2 \u2013 Split sleeve out-surface temperature measurement results on high-power input condition for the SC plug style attenuators by Yamaguchi et al. <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5 Return loss decreasing test for plug-style optical attenuators 5.1 Test samples Figure 3 \u2013 Input-power dependency of split sleeve outer surface temperatureof the SC plug style optical attenuator without housing <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.2 Test set-up and test conditions Figure 4 \u2013 Sample of design \u2013 Worst-case endface conditions Figure 5 \u2013 Test set-up of return loss monitor at high-power inputinto the optical attenuator <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.3 Test results and the analysis 5.3.1 The degradation on high-power condition Figure 6 \u2013 High-power input test results of optical attenuator Figure 7 \u2013 Result of high-power input test of the optical attenuator Tables Table 1 \u2013 Test conditions of optical attenuators <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.3.2 The result of permanent fibre withdrawals before and after the test Figure 8 \u2013 Relationship between the gap and the return loss <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figure 9 \u2013 Distribution diagram of the optical fibre withdrawal of both the optical attenuator and the optical connector Figure 10 \u2013 Temperature distribution along the central axis derivedfrom thermal simulation (10\u00a0dB optical attenuator) <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.3.3 Stabilization time of return loss decreasing 5.3.4 Relation of optical input power, test temperature and stabilized return loss Figure 11 \u2013 Time dependence of the maximum temperaturein thermal simulation of the optical attenuator <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure 12 \u2013 Return loss decreasing curve in the tests with various test temperatures and input powers (sample no. ATT44\/JC35) Figure 13 \u2013 Relationship between the maximum internal temperature and return loss stabilization point of the sample tested with various test temperatures and input powers (sample no. ATT44\/JC35) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 6 Mechanism of fibre withdrawal on high-power condition 6.1 Estimate of the mechanism of fibre withdrawal Figure 14 \u2013 Relationship between the maximum internal temperature and the gap at stabilization of return loss of the sample tested with various test temperature and input powers (sample no. ATT44\/JC35) Figure 15 \u2013 Thermal stress simulation model for three layers of zirconia,epoxy and silica <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 6.2 Fibre withdrawal after application of high-power test three times Figure 16 \u2013 Result of thermal distortion simulation and relationship between the sample maximum internal temperature and the gap <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Figure 17 \u2013 Optical fibre withdrawal alternation under repeated power input to the optical fixed attenuation (70 \u00b0C, 1 W, 30 min, repeated inputs) <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 7.2 Test results 7.2.1 Return loss changing during the test 7.2.2 The performance deviation after the test 7.3 Analysis of long-term, high-power reliability test 8 Conclusion Figure 18 \u2013 High-power, long-term test results of the optical attenuator <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic interconecting devices and passive components – Reliability. Report on high-power reliability for metal-doped optical fibre plug-style optical attenuators<\/b><\/p>\n |