High-Frequency Electrical and Optical Characterization of Semiconductor Lasers
| Autor: | Shao-Fang Wang, 王卲芳 |
|---|---|
| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 Diode laser have become an important commercial component. They are used in a wide variety of applications ranging from the readout sources in compact disk players to the transmitters in optical fiber communication systems. There are various measurement techniques to explore different properties of laser diodes. One of them is the high-frequency electrical characterization which can provide us lots of useful information. For example, we can measure the relaxation oscillation frequency of laser diodes through impedance characterization. This technique is elegant and proves to be an easier way than direct measurement of optical modulation bandwidth. We can also investigate laser modulation bandwidth from the transient analysis, but again the experimental setup is more complicated. In this paper, we investigate the properties laser diodes throught electrical characterization and build up their equivalent circuit models. We also discuss the limit of impedance measurement and try further the direct optical measurement of modulation bandwidth. These results will be compared with those of laser transient experiments. Furthermore, we discuss various important diode parameters, such as differential diode resistance, ideality factor, and the carrier time constants, and their corresponding meaning in the circuit model. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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