Publications of the Integrated Photonics Laboratory

Time Resolved Electro-Optic Measurements in Strained Silicon Racetrack Resonators

  Abstract: In this paper, we report on time resolved electro-optic measurements in strained silicon resonators. Strain is induced by applying a mechanical deformation to the device. It is demonstrated that the linear electro-optic effect vanishes when the applied voltage

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Optically Pumped GeSn Microdisk Lasers on Si

  Abstract: The strong correlation between advancing the performance of Si microelectronics and their demand of low power consumption requires new ways of data communication. Photonic circuits on Si are already highly developed except for an eligible on-chip laser source integrated monolithically. The recent demonstration

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Silicon Photonics WDM Transceiver with SOA and Semiconductor Mode-Locked Laser

Abstract: We demonstrate a complete Silicon Photonics WDM link relying on a single section semiconductor mode-locked laser and a single SOA to support up to 12 multiplexed channels with a bit error rate of 1e-12 at serial data rates of 14 Gbps without channel

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Effect of Electrical Filtering on Level Dependent ASE Noise

Abstract: We derive an analytical model describing the effect of filtering on amplified spontaneous emission noise during or after opto-electronic conversion. In particular, we show that electrical filtering results in a further reduction of the signal quality factor associated with an effective

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Packaged MZIs passively balanced by means of Multimode Grating Couplers

Abstract: We present a novel Mach-Zehnder Interferometer configuration that can be passively balanced by adjusting the position of the input fiber over a multimode input coupler, thus correcting phase deviations typically arising from fabrication asymmetries. Characterization after permanent fiber array

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High frequency electro-optic measurement of strained silicon racetrack resonators

Abstract: The observation of the electro-optic effect in strained silicon waveguides has been considered as a direct manifestation of an induced χ(2) non-linearity in the material. In this work, we perform high frequency measurements on strained silicon racetrack resonators. Strain is controlled by a mechanical

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Monolithically integrated waveguide-coupled silica microtoroids

Abstract: We report on the design and fabrication of a new type of microtoroid high-Q silica resonators monolithically coupled to on-chip silicon nanowire waveguides. In order to enable monolithic waveguide coupling, the microtoroid geometry is inverted such that the resonator

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GeSn lasers for monolithic integration on Si

Abstract: Lasing under optical pumping is shown in suspended GeSn microdisks fabricated on a Ge virtual substrate with a lasing threshold below 1 mW at 20K. Intensive research has been carried out in the last years on novel materials for

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High Speed WDM Interconnect Using Silicon Photonics Ring Modulators and Mode-Locked Laser

Abstract: We demonstrate an 8 by 14 Gbps compatible WDM link based on a single-section semiconductor mode-locked laser, silicon photonics resonant ring modulators and joint channel reamplification with a semiconductor optical amplifier operated in the linear regime. Individual channels reach

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Low Vπ Silicon photonics modulators with highly linear epitaxially grown phase shifters

Abstract: We report on the design of Silicon Mach-Zehnder carrier depletion modulators relying on epitaxially grown vertical junction diodes. Unprecedented spatial control over doping profiles resulting from combining local ion implantation with epitaxial overgrowth enables highly linear phase shifters with

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