신소재공학과

Seminar

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Date 20181102


MSE Special Seminar

 

 ■ Title :  Silicon Photonics and Germanium 

 ■ Speaker : Dr. Sungbong Park (Intel Corporation)

 ■ Date and Time : 11/2 (Fri) 14:00~16:00 

 ■ Venue : Applied Engineering Building (W1-1) Seminar Room #4

 ■ Host : Prof. Kyung-Min Kim

 ■ Abstract :  “Silicon Photonics is a combination of two of the most important inventions of the 20th century; the silicon integrated circuit and the semiconductor laser” - Intel Silicon Photonics Product Division

Silicon is not viewed as a material for photonics or optoelectronics, compared to compound semiconductors because of lack of light emission or optical modulation which is attributed to its indirect band gap and very weak electro-optic effects. Therefore, “Silicon Photonics” would have sounded like an oxymoron before early 2000s, in which a group of researchers at Intel demonstrated the world-first GHz optical modulator and Raman laser based on silicon [1, 2]. Since then, there has been a tremendous amount of investigation and demonstration of silicon photonic components and integration targeting optical communication or sensing as well as offering lower cost and scalability with mature silicon CMOS technologies. To that end, photodetection at near-infrared (NIR, 1.3-1.6um) is a must. Now is Germanium to shine thanks to high absorption at NIR and integratability with CMOS fabrication lines. Although, achieving a good germanium epi quality is challenging due to 4.2% lattice mismatch between the two elements which inevitably produces dislocations and in turn increases dark current of photodetectors. That is where MATERIAL SCIENTISTS and ENGINEERS should come to the rescue. Nonetheless, many groups have demonstrated Ge photodiodes with acceptable dark current, responsivity close to the quantum limit and bandwidth of >50GHz.


List of Articles
No. Category Subject Author Date Views
Notice Regular 03/26 (Tue) Prof. Jae-Byum Chang (KAIST MSE) ADMINI 2019.03.22 9
Notice Regular 03/19 (Tue) Dr. YangKoo Cho (Korea Research Institute of Standard and Science) ADMINI 2019.03.18 95
Notice Regular 3/12 (Tue) Prof. Chang Dong Yoo (KAIST EE) ADMINI 2019.03.12 93
Notice Regular 2/26 (Tue) Dr. Hye-Young Kim (Senior Venture Association) ADMINI 2019.02.22 201
Notice Special 1/28 (Mon) Prof. Yongjin Lee (Shanghai Tech Univ.) ADMINI 2019.01.23 518
Notice Regular 12/4 (Tue) Prof. Doo Seok Jeong (Hanyang Univ., Department of MSE) ADMINI 2018.11.30 864
Notice Regular 11/27 (Tue) Prof. Seong-Jun Jeong (Soongsil Univ.) ADMINI 2018.11.26 709
282 Regular 11/20 (Tue) Prof. Youn Soo Kim (Department of MSE, POSTECH) ADMINI 2018.11.19 751
281 Special 11/14 (Wed) Prof. Hui-Ming Cheng (Director and Professor, Tsinghua University, IMR CAS) ADMINI 2018.11.13 446
280 Special 11/20 (Tue) Prof. Alfonso H. W. Ngan (Department of Mechanical Engineering, University of Hong Kong) file ADMINI 2018.11.13 710
279 Regular 11/13 (Tue) Dr. Kang-Wook Lee (SK Hynix) ADMINI 2018.11.13 270
278 Regular 11/6 (Tue) Prof. Dongchan Jang (KAIST NQE) ADMINI 2018.11.02 371
» Special 11/2 (Fri) Dr. Sungbong Park (Intel Corporation) ADMINI 2018.10.30 515
276 Regular 10/30 (Tue) Dr. Myung-Il Park (Korea Technology Finance Corporation) ADMINI 2018.10.26 278
275 Regular 10/23 (Tue) Dr. Sang-Soo Han (H&P International Patent & Law Office) ADMINI 2018.10.19 276
274 Regular 10/2 (Tue) Prof. Dohwan Kim (Hanyang Univ.) ADMINI 2018.10.01 435
273 Regular 9/18 (Tue) Prof. Seong Jun Kang (Kyung Hee Univ.) ADMINI 2018.09.17 514
272 Regular 9/11 (Tue) Dr. Byeongdu Lee (Argonne National Laboratory) ADMINI 2018.09.07 648
271 Regular 9/4 (Tue) Prof. Kibum Kang (Department of MSE, KAIST) ADMINI 2018.09.03 585
270 Regular 8/28 (Tue) Prof. Kyung-Min Kim (Department of MSE, KAIST) ADMINI 2018.08.24 942
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