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Furukawa Review No.23

Series FOL0903m Mini-Pump Coolerless Laser Modules for Optical Amplifiers

Masayuki Minamino, Yuji Yamagata, Tomoya Kato, Takashi Koseki and Toru Fukushima


A more compact 980-nm laser module with low power consumption has been developed as a pumping source for optical amplifiers in metropolitan networks. To cope with miniaturization and low power consumption, a coolerless structure has been newly employed. To ensure high-temperature operation we have adopted a new diode chip structure and fiber Bragg grating (FBG) parameters. The resulting device has one-fourth the package size and one-third the power consumption of the conventional butterfly type. Wavelength stability is achieved over the entire operating temperature range.

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