Abstract
The transverse junction stripe (TJS) laser has a unique structure and exhibits significantly simple mode properties. This paper reports the relation between transient behavior and spectral characteristics. The discrepancy of the experimental pulse response of TJS lasers from the solution by conventionally simple treatment of rate equation is discussed, and it was found that by taking the effective pump rate into consideration in the rate equation a fairly good but qualitative explanation can be given for the experimental fact that the TJS lasers hardly tend to show relaxation oscillation. Effective pump rate is deduced on the basis of the transient gain-peak shift due to junction temperature rise during the application of modulation current and is deeply concerned with single-mode operation mechanism in TJS lasers. It becomes evident from the experiment that TJS lasers show a good response waveform without relaxation and with very little PCM pattern effect in excess of a bit rate of 100 Mbits/s.
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