Fiber alignment shifts of fiber-solder-ferrule joints in butterfly laser packaging: measurement and finite-element-method analysis

Maw-Tyan Sheen; Chia-Ming Chang; Wood-Hi Cheng

doi:10.1117/12.527886

15 July 2004 Fiber alignment shifts of fiber-solder-ferrule joints in butterfly laser packaging: measurement and finite-element-method analysis

Maw-Tyan Sheen, Chia-Ming Chang, Wood-Hi Cheng

Author Affiliations +

Proceedings Volume 5339, Photon Processing in Microelectronics and Photonics III; (2004) https://doi.org/10.1117/12.527886
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

The fiber alignment shifts of fiber-solder-ferrule (FSF) joints in butterfly laser module packaging under temperature cycle testing are studied experimentally and numerically. Using a novel image capture camera system as a monitor probe and the Sn-based solders as bonding materials, we have achieved the minimum fiber eccentric offsets of 8 and 20mm in FSF joints with the PbSn and AuSn solders, respectively. The measured results showed that the fiber alignment shifts of FSF joints with the hard AuSn solder exhibited shifts two times less than that with the soft PbSn solder. The experimental measurements of fiber alignment shifts were in good agreement with the numerical calculations of the finite-element method (FEM) analysis. The major fiber shift formation mechanisms of FSF joints in temperature cycling may come from the localized plastic solder yielding introduced by the local thermal stress variation, the redistribution of the residual stresses, and the stress relaxation of the creep deformation within the solder.

Citation Download Citation

Maw-Tyan Sheen, Chia-Ming Chang, and Wood-Hi Cheng "Fiber alignment shifts of fiber-solder-ferrule joints in butterfly laser packaging: measurement and finite-element-method analysis", Proc. SPIE 5339, Photon Processing in Microelectronics and Photonics III, (15 July 2004); https://doi.org/10.1117/12.527886

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KEYWORDS

Finite element methods

Laser welding

Fiber lasers

Optical alignment

Packaging

Laser packaging

Cameras

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