標準製程下應用於整合型光通訊接收器之光偵測器元件與訊號放大電路設計

The Design of the Photodetectors and Analog Front-Ends for Integrated Optical Receiver in Standard Process

廖偉傑(Wei-Chieh Liao)

指導教授 ： 徐永珍

國立清華大學/電機資訊學院/電子工程研究所/碩士(2012年)

摘要

近年來隨著科技的進步，大眾對於高速資料傳輸逐漸重視且需要
，光纖通訊提供高頻寬介面性質而沒有電訊號傳輸介面的許多缺點，所以光纖通訊系統在資料傳輸上扮演著重要的角色。
本論文分為兩部分，第一部分為利用TSMC 0.18μm CMOS製程來實現3.125Gb/s光接收前端電路。在所設計的電路中，使用差動主動米勒電容(Differential Active Miller Capacitor，DAMC)電路來取代外接式電容可更有效率的使用晶片面積，而此全整合性之設計也可避免掉晶片外部的雜訊干擾，由量測結果可得到，在使用231-1的虛擬隨機位元序列(Pseudo-Random Binary Sequence，PRBS)以及誤碼率(Bit Error Rate，BER)為10-12的測試條件之下，可得到相當精確的交錯點以及最小化的直流偏移量。整體的轉阻增益、功率耗損及晶片面積分別為108.02dBΩ、43.2mW和0.53mm × 0.61mm，量測結果呈現出來的電路效能皆優於其它文獻。
第二部分為光偵測器(Photo Detector，PD)的設計，以TSMC 0.18μm SiGe BiCMOS製程實現高響應度(Responsivity)之光偵測器。利用SiGe異質接面材料特性及光電晶體放大特性，增加光偵測器響應度，量測結果在750nm光源下高達75A/W。

關鍵字

光纖通訊 ； 光接收器 ； 光偵測器

並列摘要

Along with the improvement of technology, people realized the importance and indispensability of high data rate in communications. The Optical Fiber Communication provides the good properties of high bandwidth interface without the problems seen in electrical interface, and therefore the Optical Fiber Communication System plays an important role in modern data transmission.
This thesis can be divided into two parts. One is the design of the analog front-end in a 3.125 Gb/s optical receiver, fabricated in TSMC 0.18μm CMOS technology. The designed optical receiver front-end circuit utilizes high performance differential active Miller capacitor (DAMC) circuits to replace the off-chip capacitors so as to achieve an area-efficient design. The fully integrated design can also avoid off-chip noise interference. The measured results show that it the circuit achieves high precise crossing points and minimal dc offset, at a bit error rate (BER) of 10-12 using the 231-1 pseudo-random bit sequence pattern. The achieved transimpedance gain, power consumption and chip area are 108.02dBΩ, 43.2mW and 0.53mm × 0.61mm, respectively. The results show superior performance when compared with the figures in other works.
The other part of the thesis is the design of high responsivity photodetector, implemented through TSMC 0.18μm SiGe BiCMOS process. The responsivity of photodetector is improved by the properties of SiGe heterojunction and phototransistor and which achieves a measured high value of 75 A/W under a 750nm wavelength light.

並列關鍵字

Optical Fiber Communication ； Optical Receiver ； Photo Detector

參考文獻

[2] 劉秉澄, “應用於10Gb/s之高效能矽鍺限幅放大器設計”, 國立清華大學, 電子工程研究所, 碩士論文, 中華民國九十六年七月.

[19] 林威成, “標準SiGe BiCMOS製程中光偵測器結構之研究”, 國立清華大學, 電子工程研究所, 碩士論文, 中華民國一百年六月.

[3] S.-H. Huang, W.-Z. Chen, Y.-W. Chang, and Y.-T. Huang, “A 10-Gb/s OEIC with meshed spatially-modulated photo detector in 0.18-μm CMOS technology,” IEEE J. Solid-State Circuits, vol. 46, no. 5, pp. 1158–1169, May 2011.

[4] E. Sackinger, Broadband Circuits for Optical Fiber Communication. John Wiley & Sons, Inc., 2005.

[5] B. Razavi, Design of Integrated Circuits for Optical Communication Systems. McGraw-Hill, 2003.