Ultra-compact integrated silicon photonics balanced coherent photodetector
Affiliation
Univ Arizona, Coll Opt SciIssue Date
2016-02-13Keywords
Silicon photonicsbalanced coherent photodetectors
metal-semiconductor-metal (MSM) photodetectors
multimode interference (MMI) coupler
germanium photodetectors
homodyne
integrated optics
Metadata
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SPIE-INT SOC OPTICAL ENGINEERINGCitation
Jason T. Meyer and Mahmoud Fallahi " Ultra-compact integrated silicon photonics balanced coherent photodetector ", Proc. SPIE 9774, Next-Generation Optical Communication: Components, Sub-Systems, and Systems V, 97740H (February 13, 2016); doi:10.1117/12.2213359; http://dx.doi.org/10.1117/12.2213359Rights
© 2016 SPIE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
In this paper, the performance simulations of a novel ultra-compact balanced coherent photodetector for operation at a wavelength of 1.5 mu m are presented and design proposals for future fabrication processes are provided. It consists of a compact 2x2 MMI that is evanescently coupled into a germanium MSM photodetection layer. The simulations demonstrate dark current less than 10 nA, capacitance less than 20 fF, and optical bandwidth in the 10-30 GHz range. We propose utilizing the simplicity of direct wafer bonding to bond the detection layer to the output waveguides to avoid complicated epitaxial growth issues. This ultra-compact device shows promise as a high-speed, low-cost integrated silicon photonics solution for the telecommunications infrastructure.ISSN
0277-786XVersion
Final published versionae974a485f413a2113503eed53cd6c53
10.1117/12.2213359