Photodiode UTC et oscillateur différentiel commandé en tension à base de TBdH InP pour récupération d'horloge dans un réseau de transmission optique à très haut débit

Abstract : Optoelectronic integration of a receiver in an optical transmission system involves three main functions : photodetection, clock and data recovery. This thesis contributes to the development of such a concept by : first, the study of the uni-travelling carrier photodiode (UTC-PD) compatible with the double heterojunction bipolar transistor (DHBT), and secondly, the development of a voltage-controlled oscillator (VCO) using the same technology for clock and data recovery at 40 and 43 Gbit/s. Due to a higher 3dB bandwidth and higher saturation output than the conventional PIN-PD, the UTC-PD is a promising photonic device for high speed and high output power applications. The first part of this work describes the UTC-PD characteristics as well as its integration with DHBTs on InP substrate. The compatibility of both structures has been demonstrated including some specifications. In particular, the doping concentration and the thickness of the absorption layer are important trade-offs between the responsivity and the high speed response of the device. With an integration in a phase-locked loop (PLL), the differential VCO will create a stable signal in order to supply two complementary clock phases to digital circuits such as the decision circuit used for data recovery. The VCO architecture with “internal varactor” is well suited to the realisation of very high frequency VCOs. The VCO built for this work has achieved a good tuning-range performance (10%) around the oscillation frequency of 45 GHz. The precision of this frequency depends not only on the transistor and coplanar waveguide line models used in the simulation, but also on the reproducibility of the technological process. These results allow the taking of an important and necessary step towards the development of the InP DHBT-based monolithically integrated receiver for high bit rate applications.
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Contributor : Suwimol Withitsoonthorn <>
Submitted on : Thursday, July 29, 2004 - 12:40:00 PM
Last modification on : Thursday, February 7, 2019 - 1:33:40 AM
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  • HAL Id : tel-00006403, version 2

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Suwimol Withitsoonthorn. Photodiode UTC et oscillateur différentiel commandé en tension à base de TBdH InP pour récupération d'horloge dans un réseau de transmission optique à très haut débit. Micro et nanotechnologies/Microélectronique. Université Pierre et Marie Curie - Paris VI, 2004. Français. ⟨tel-00006403v2⟩

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