Enhancement effect of high-frequency noise of injection lasers with reflected waves due to direct modulation
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.
- Publication:
-
Optics Communications
- Pub Date:
- May 1980
- DOI:
- 10.1016/0030-4018(80)90179-0
- Bibcode:
- 1980OptCo..33..136H
- Keywords:
-
- Injection Lasers;
- Light Modulation;
- Noise Spectra;
- Shot Noise;
- Wave Reflection;
- Laser Outputs;
- Optical Reflection;
- Semiconductor Lasers;
- Signal To Noise Ratios;
- Spectral Bands;
- Lasers and Masers