大電流脈衝之雷射二極體驅動電路之研究

本論文在研究大電流雷射二極體驅動電路，其功用在於利用電路產生一極短之脈衝電流以驅動所提供之雷射二極體，並期望藉由使整體架構積體電路化，將來可應用於可攜式電子產品當中。此驅動電路之架構由史密特觸發器、相位不重疊時脈產生器及輸出驅動電路來感應並驅動外部離散電路。首先參考各式雷射二極體驅動電路主要架構，在比較其優劣之後建構一適當之架構當作驅動雷射二極體之外部離散電路，並以此一架構進行驅動此電路的內部晶片設計，且藉由相同概念之下發展出另一簡單有效之控制電路。在充分瞭解其電路工作原理後，將分別經過HSPICE軟體模擬、布局和實際晶片量測分析。

關鍵字

脈衝電流；雷射二極體

並列摘要

This thesis focuses on driver for laser diode with large current and which makes a short pulse current for driving laser diode. The driver will be applied to portable electronic products. The structure of the driver driving and sensing external discrete circuits is composed of Schmitt trigger structure, non-overlapping clock generator and output driver circuit. First, some laser diode driver circuits are reviewed. After comparing strengths and weaknesses of the circuits, a suitable driver circuit is chosen to design external discrete circuit. Second, a new control circuit is designed for driving this external discrete circuit. In addition, the control circuit is designed to re-develop a simple and effective driver. Finally, the circuit is simulated by HSPICE, the layout is designed, and the chip is tested.

並列關鍵字

pulse current ； laser diode

參考文獻

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[14] 姚長安, “Study on Monitoring and Automatic Warning System Assessment and Application,” 中原大學土木工程學系, Jul. 2005.

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[29] V. Katyal, R. L. Geiger and D. J. Chen, “Adjustable Hysteresis CMOS Schmitt Triggers,” Circuits and Systems. ISCAS 2008. IEEE International Symposium on, pp. 1938–1941, May 2008.

[11] W. Lauterborn, T. Kurz and M. Wiesenfeldt, Coherent Optics, Fundamentals and Applications. Springer Verlag, Berlin, 2003.

國際替代計量

大電流脈衝之雷射二極體驅動電路之研究

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