| DC 欄位 |
值 |
語言 |
| DC.contributor | 電機工程學系 | zh_TW |
| DC.creator | 蔡承佑 | zh_TW |
| DC.creator | CHENG-YOU CAI | en_US |
| dc.date.accessioned | 2012-7-25T07:39:07Z | |
| dc.date.available | 2012-7-25T07:39:07Z | |
| dc.date.issued | 2012 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=995201016 | |
| dc.contributor.department | 電機工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 我們提出了新型的GaAs/In0.5Ga0.5P高速雷射功率轉換器(LPC)，不僅可以偵測高速的光訊號還有直流電功率的轉換。有兩個很嚴重的問題，會導致我們元件無法高速操作:其一是在光（830nm）激發所產生的電洞移動率很慢，另一為傳導帶偏移引起的電子阻斷效應，故我們分別利用漸變性參雜的P型GaAs作為吸收層和N型In0.5Ga0.5P為集極層來避免。此外，在順偏下會產生極大的接面電容，所以我們利用內切（undercut）In0.5Ga0.5P層來減少電容值，進而達到從0V～+0.8V皆可高速操作（~9 GHz），而在0.8V時是我們元件最高轉換效率的工作點(~15％)。
| zh_TW |
| dc.description.abstract | We demonstrate novel GaAs/In0.5Ga0.5P high-speed laser power converters (LPCs), which not only can detect the envelope of incoming high-speed optical data but also can efficiently convert its optical dc component to dc electrical power. By utilizing the graded p-type GaAs and n-type In0.5Ga0.5P layers as photoabsorption (P) and collector (C) layers, respectively, the problem of slow-motion holes under 830-nm-optical-wavelength excitation and the conduction-band-offset- induced electron blocking effect between the P/C layers, which seriously limit the high-speed performance of LPC, can both be eliminated. Furthermore, by using the undercut mesa structure of the In0.5Ga0.5
C layer to further reduce the large junction capacitance under forward operation, we can achieve invariable high-speed performance (~9 GHz) from zero to near turn-on voltage (+0.8 V), which corresponds to the operation point of our LPC with the maximum power conversion efficiency (~15%).
| en_US |
| DC.subject | 雷射功率轉換器 | zh_TW |
| DC.subject | laser power converter | en_US |
| DC.title | 具有同時高速資料傳輸及產生直流電功率的
砷化鎵/磷化銦鎵的雷射功率轉換器 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | GaAs/In0.5Ga0.5P Laser Power Converter WithUndercut Mesa for Simultaneous High-Speed DataDetection and DC Electrical Power Generation
| en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |