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High-intensity fiber-coupled diode laser array

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For many applications such as the use of star-coupled local area networks, optical surgery, pyrotechnic ignition, OTDRs, and remote optical powering of sensors, it is desirable to obtain the highest possible optical power level and power density in a small core diameter multimode fiber. In this paper, we describe the excitation of a 50-μm core diam optical fiber with a GaAIAs diode laser array. Previously, 140 mW cw of optical power was reported to be transmitted through a 100-μm core 0.3-N.A. optical fiber by using a laser diode array.1 The coupling efficiency in this case was ~50%. In this paper, the excitation of a special 50-μm core 0.3-N.A. optical fiber with a similar butt-coupled laser diode array is described.

© 1986 Optical Society of America

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