Universiti Teknologi Malaysia Institutional Repository

Active alignment and reliable pigtailing of laser diode transmitter

Fadhali, Mohammed and Toto, Saktioto and Zainal, J. and Munajat, Y. and Ali, J. and Rahman, R. (2008) Active alignment and reliable pigtailing of laser diode transmitter. In: Proceedings of SPIE - The International Society for Optical Engineering.

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Official URL: http://dx.doi.org/10.1117/12.814574


In this paper we present theoretical and experimental analysis on Nd:YAG laser microwelding for pigtailing laser diode transmitter through two ball lenses that are employed for effectively matching the elliptical mode field of the laser diode with the circular on of the single mode fiber. The fiber attachment and the fixing of various coupling components have been performed in what is so called active alignment process. The system continues measuring the coupled power during the processes of alignment and attachment of various coupling components as well as the working distance and misalignment tolerances optimizations. Results of theoretical modeling of laser weld penetration depth agree with the experimentally measured results in the low laser pulse energy range. Moreover the laser pulse parameters such as, duration, energy, number of pulse shoots as well as the focusing position over the workpiece and angle of laser pulse incidence are found to have very significant effects on the weld yields and greatly affect the laser weld depth to width ratio. Optimization of all the mentioned parameters found to be necessary for achieving strong laser microwelds with more penetration and less width in the attachments of the sensitive optical components inside the packaged photoni devices modules.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Ball lenses, laser microwelding, laser weld aspect ratio, penetration depth, photonic devices pigtailing
Subjects:Q Science > Q Science (General)
ID Code:7802
Deposited By: Nur Amal Zakiah Shamsudin
Deposited On:22 Jan 2009 07:23
Last Modified:22 Jan 2009 07:40

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