Journal article
Hybrid III-V/SOI resonant cavity enhanced photodetector
Department of Photonics Engineering, Technical University of Denmark1
Quantum and Laser Photonics, Department of Photonics Engineering, Technical University of Denmark2
Metro-Access and Short Range Systems, Department of Photonics Engineering, Technical University of Denmark3
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark4
A hybrid III–V/SOI resonant-cavity-enhanced photodetector (RCE-PD) structure comprising a high-contrast grating (HCG) reflector, a hybrid grating (HG) reflector, and an air cavity between them, has been proposed and investigated. In the proposed structure, a light absorbing material is integrated as part of the HG reflector, enabling a very compact vertical cavity.
Numerical investigations show that a quantum efficiency close to 100 % and a detection linewidth of about 1 nm can be achieved, which are desirable for wavelength division multiplexing applications. Based on these results, a hybrid RCE-PD sample has been fabricated by heterogeneously integrating an InP-based material onto a silicon-on-insulator wafer and has been characterized, which shows a clear enhancement in photo-current at the designed wavelength.
This indicates that the HG reflector provides a field enhancement sufficient for RCE-PD operation. In addition, a capability of feasibly selecting the detection wavelength during fabrication as well as a possibility of realizing silicon-integrated bidirectional transceivers are discussed.
Language: | English |
---|---|
Year: | 2016 |
Pages: | 16512-16519 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.24.016512 |
ORCIDs: | Yvind, Kresten and Chung, Il-Sug |