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Proceedings Paper

Semiconductor lasers for high-bit-rate optical data transmission: investigations to increase the yield of laser arrays
Author(s): Hartmut Hillmer; Bernd Klepser
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Paper Abstract

Our studies on the thermal cross talk of laser arrays with integrated thin film heaters involve theoretical as well as experimental investigations. Comparing the effects of intentional geometrical variations of the device design, we found that the relative thermal crosstalk depends critically on the distance between the active area and the film heater. The most striking result is that a minimization of the thermal resistivity of the device does not always lead to a reduced thermal crosstalk. We demonstrate that an additional heat barrier close to the active region and/or an improved heat transfer between the submount and the heat sink may reduce the relative thermal crosstalk, a result completely unexpected from intuitive considerations. Model calculations showed that the device yield can be increased by 20 percent improving the heat transfer between the submount and the heat sink.

Paper Details

Date Published: 20 January 1999
PDF: 12 pages
Proc. SPIE 3688, 6th International Conference on Industrial Lasers and Laser Applications '98, (20 January 1999); doi: 10.1117/12.337528
Show Author Affiliations
Hartmut Hillmer, Deutsche Telekom (Germany)
Bernd Klepser, Deutsche Telekom (Germany)


Published in SPIE Proceedings Vol. 3688:
6th International Conference on Industrial Lasers and Laser Applications '98
Vladislav Ya. Panchenko; Vladimir S. Golubev, Editor(s)

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