Laser weld process improvements for optical isolator assembly
Optical isolators are used in lightwave systems to reduce feedback that could be propagated in the signal fiber. Several methods can be used to assemble and join the various components which comprise the completed device. Since the single mode fiber core is 8 microns in diameter, it is desirable to...
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| Published in: | 1995 Proceedings. 45th Electronic Components and Technology Conference pp. 1116 - 1121 |
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| Main Authors: | , , , |
| Format: | Conference Proceeding Journal Article |
| Language: | English |
| Published: |
IEEE
1995
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Optical isolators are used in lightwave systems to reduce feedback that could be propagated in the signal fiber. Several methods can be used to assemble and join the various components which comprise the completed device. Since the single mode fiber core is 8 microns in diameter, it is desirable to utilize a robust assembly technique which will produce a minimum of distortion during the assembly process. Process induced distortion could randomly change the device coupling which may have an adverse effect on operation yield. With the development of laser welding systems, devices can be manufactured with localized welds providing small amounts of thermal distortion. This paper compares two isolator assembly techniques: resistance welding and laser welding. A comparison of device power losses after the weld sequence and thermal cycling data shows that laser welding is a more robust and stable technique for isolator manufacture. |
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| Bibliography: | SourceType-Scholarly Journals-2 ObjectType-Feature-2 ObjectType-Conference Paper-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Article-3 |
| ISBN: | 0780327365 9780780327368 |
| ISSN: | 0569-5503 |
| DOI: | 10.1109/ECTC.1995.517832 |