Please use this identifier to cite or link to this item: https://doi.org/10.1109/LED.2008.920277
Title: Evanescent-coupled Ge p-i-n photodetectors on Si-waveguide with SEG-Ge and comparative study of lateral and vertical p-i-n configurations
Authors: Wang, J. 
Loh, W.Y.
Chua, K.T.
Zang, H.
Xiong, Y.Z.
Loh, T.H.
Yu, M.B.
Lee, S.J. 
Lo, G.-Q.
Kwong, D.-L.
Keywords: Evanescent-coupled
Lateral p-i-n
Vertical p-i-n
Waveguide Ge-photodetector
Issue Date: May-2008
Citation: Wang, J., Loh, W.Y., Chua, K.T., Zang, H., Xiong, Y.Z., Loh, T.H., Yu, M.B., Lee, S.J., Lo, G.-Q., Kwong, D.-L. (2008-05). Evanescent-coupled Ge p-i-n photodetectors on Si-waveguide with SEG-Ge and comparative study of lateral and vertical p-i-n configurations. IEEE Electron Device Letters 29 (5) : 445-448. ScholarBank@NUS Repository. https://doi.org/10.1109/LED.2008.920277
Abstract: Si-waveguide-integrated lateral Ge p-i-n photodetectors using novel Si/ SiGe buffer and two-step Ge-process are demonstrated for the first time. Comparative analysis between lateral Ge p-i-n and vertical p-Si/i-Ge/ n-Ge p-i-n is made. Light is evanescently coupled from Si waveguide to the overlaying Ge-detector, achieving high responsivity of 1.16 A/W at 1550 nm with f3db bandwidth of 3.4 GHz for lateral Ge p-i-n detector at 5 V reverse bias. In contrast, vertical p-Si/i-Ge/n-Ge p-i-n has lower responsivity of 0.29 A/W but higher bandwidth of 5.5 GHz at 5 V bias. The higher responsivity of lateral p-i-n detectors is attributed to smaller optical mode overlap with highly doped Ge region as in vertical p-i-n configuration. © 2008 IEEE.
Source Title: IEEE Electron Device Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/82302
ISSN: 07413106
DOI: 10.1109/LED.2008.920277
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

34
checked on Dec 5, 2018

WEB OF SCIENCETM
Citations

29
checked on Dec 5, 2018

Page view(s)

44
checked on Sep 21, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.