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36 GHz submicron silicon waveguide germanium photodetector

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TLDR
By optimizing Ge thickness and offsetting the contact window, it is demonstrated that the responsivity of high speed waveguide-based Ge photodetectors integrated on a 0.25 μm silicon-on-insulator (SOI) platform can be improved from 0.6A/W to 0.95 A/W.
Abstract
We present two effective approaches to improve the responsivity of high speed waveguide-based Ge photodetectors integrated on a 0.25μm silicon-on-insulator (SOI) platform. The main cause of poor responsivity is identified as metal absorption from the top contact to Ge. By optimizing Ge thickness and offsetting the contact window, we have demonstrated that the responsivity can be improved from 0.6A/W to 0.95A/W at 1550nm with 36GHz 3dB bandwidth. We also demonstrate that a wider device with double offset contacts can achieve 1.05A/W responsivity at 1550nm and 20GHz 3dB bandwidth.

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Journal ArticleDOI

Zero-bias 40Gbit/s germanium waveguide photodetector on silicon.

TL;DR: A very high optical bandwidth, estimated up to 120GHz, was evidenced in 10 µm long Ge photodetectors selectively grown at the end of silicon waveguides using three kinds of experimental set-ups.
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Silicon Photonics Design: From Devices to Systems

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Review of Silicon Photonics Technology and Platform Development

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References
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Journal ArticleDOI

Silicon-based optoelectronics

TL;DR: In this article, a review of Si-based photonic components and optoelectronic integration techniques, both hybrid and monolithic, is presented, with a focus on column IV materials (Si, Ge, C and Sn).
Journal ArticleDOI

Computer Systems Based on Silicon Photonic Interconnects

TL;DR: The power dissipation of a photonic link is explored, a roadmap to lower the energy-per-bit of silicon photonic interconnects is suggested, and the challenges that will be faced by device and circuit designers towards this goal are identified.
Journal ArticleDOI

High performance, waveguide integrated Ge photodetectors

TL;DR: A Ge p-i-n photodetector that is monolithically integrated with silicon oxynitride and silicon nitride waveguides, which facilitates the integration with CMOS circuits.
Journal ArticleDOI

42 GHz p.i.n Germanium photodetector integrated in a silicon-on-insulator waveguide

TL;DR: A compact pin Ge photodetector is integrated in submicron SOI rib waveguide using butt coupling configuration which is sufficient to totally absorb light at the wavelength of 1.55 microm.
Journal ArticleDOI

31 GHz Ge n-i-p waveguide photodetectors on Silicon-on-Insulator substrate.

TL;DR: Evanescently coupled Ge waveguide photodetectors that are grown on top of Si rib waveguides that have an optical bandwidth of 31.3 GHz at -2V for 1550nm are reported on.
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