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Tunable Resonant-Cavity-Enhanced Photodetector with Double High-Index-Contrast Grating Mirrors

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Authors:
  • Learkthanakhachon, Supannee ;
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    Department of Photonics Engineering, Technical University of Denmark
  • Yvind, Kresten ;
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    Orcid logo0000-0001-8013-1606
    Department of Photonics Engineering, Technical University of Denmark
  • Chung, Il-Sug
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    Orcid logo0000-0002-6382-2795
    Department of Photonics Engineering, Technical University of Denmark
DOI:
10.1117/12.2004047
Abstract:
In this paper, we propose a broadband-tunable resonant-cavity-enhanced photodetector (RCE-PD) structure with double high-index-contrast grating (HCG) mirrors and numerically investigate its characteristics. The detector is designed to operate at 1550-nm wavelength. The detector structure consists of a top InP HCG mirror, a p-i-n photodiode embedding multiple quantum wells, and a Si HCG mirror formed in the Si layer of a silicon-on-insulator wafer. The detection wavelength can be changed by moving the top InP HCG mirror suspended in the air. High reflectivity and small penetration length of HCGs lead to a narrow absorption linewidth of 0.38 nm and a broad tuning range of 111 nm. The peak absorption efficiency is 76-84% within the tuning range. This broadband-tunable and narrow-absorption-linewidth RCE-PD is desirable for applications where selective wavelength demultiplexing is required. Furthermore, the fact that it can be fabricated on a silicon platform offers us a possibility of integration with electronics.
Type:
Conference paper
Language:
English
Published in:
Proceedings of Spie, the International Society for Optical Engineering, 2013, Vol 8633
Keywords:
Wavelength division multiplexing; Photodiode; HCG; WDM
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Conference:
SPIE Photonics West : High Contrast Metastructures II, 2013
Submission year:
2013
Scientific Level:
Scientific
ID:
242564143

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