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Chin. Opt. Lett.
 Home  List of Issues    Issue 05 , Vol. 16 , 2018    10.3788/COL201816.051301

Research on photodiode integrated with wide spectrum focusing reflector using nonperiodic subwavelength gratings
Tao Liu, Yongqing Huang, Jiarui Fei, Gang Wu, Xiaokai Ma, Xiaofeng Duan, Kai Liu, and Xiaomin Ren
Institute of Information Photonics and Optical Communications, [Beijing University of Posts and Telecommunications], Beijing 100876, China

Chin. Opt. Lett., 2018, 16(05): pp.051301

Topic:Integrated optics
Keywords(OCIS Code): 130.3120  230.5170  250.0040  

The fabrication and characterization of p-i-n photodiodes integrated with wide spectrum focusing reflectors using nonperiodic strip and concentric-circular subwavelength gratings are presented. The experimental results show that the gratings can reflect and focus the incident light on the absorber of the photodiode, and thus can simultaneously achieve high speed and high efficiency. For the gratings’ integrated photodiodes, the responsivity is improved over a wide spectral range, and when the absorber was 600 nm and the mesa diameter was 40 μm, a responsivity of 0.46 A/W at a wavelength of 1.55 μm and a 3 dB bandwidth of 21.6 GHz under a reverse bias of 3 V were simultaneously obtained.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2018/4/27

Get Citation: Tao Liu, Yongqing Huang, Jiarui Fei, Gang Wu, Xiaokai Ma, Xiaofeng Duan, Kai Liu, and Xiaomin Ren, "Research on photodiode integrated with wide spectrum focusing reflector using nonperiodic subwavelength gratings," Chin. Opt. Lett. 16(05), 051301(2018)

Note: The authors would like to thank Wenjing Fang for helpful discussions and data exchange. This work was supported by the Joint Laboratory of Quantum Optoelectronics and the Theory of Bivergentum and Beijing International Scientific and Technological Cooperation Base of Information Optoelectronics and Nano-heterogeneous Structure.This work was funded by the National Natural Science Foundation of China (NSFC) (Nos. 61574019, 61674020, and 61274044), the 111 Project (No. B07005), the Beijing Municipality Natural Science Foundation (No. 4132069), and the Program for Changjiang Scholars and Innovative Research Team in University through the Ministry of Education of China (No. IRT0609).


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