Enhancement effect of high-frequency noise of injection lasers with reflected waves due to direct modulation |
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| Authors: | Osamu Hirota Yasuharu Suematsu Kin-Sing Kwok |
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| Affiliation: | Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152, Japan |
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| Abstract: | ![]()
It is found experimentally that the high-frequency noise of an injection laser associated with wave injection due to external reflection is significantly increased when the direct modulation is applied. It is clarified that the noise enhancement effect is caused by the increasing of the quantum shot noise of the injection laser due to the current modulation. The high- frequency noise of the narrow stripe laser is smaller than that of the wide stripe laser. |
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