The temperature sensitivity of asymmetric Fabry-Perot modulators (using GaAs-AlGaAs MQW)

The authors have investigated the temperature sensitivity of AFPMs over a temperature range of 21 degrees, and have shown that the contrast of the device remains over 10 dB for a fixed bias, while that figure can be further improved by voltage tracking and/or wavelength tracking. The results are very encouraging since they indicate that the structure is sufficiently temperature insensitive to be suitable for a practical system. The efficient design of the structure, using a low finesse cavity, ensures a considerable enhancement of the electroabsorptive effects, maintaining at the same time tolerance to fabrication and environmental factors.<
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