Publications of the Chair of Integrated Photonics

High-Q inverted silica microtoroid resonators monolithically integrated into a silicon photonics platform

      Abstract: We report on the monolithic integration of a new class of reflown silica microtoroid resonators with silicon nanowaveguides fabricated on top of the silica film. Connectivity with other silicon photonics devices is enabled by inversion of

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Reconfigurable Microring Resonator-Based Optical Transmitter for Elastic Optical Networks

    Abstract: The increasing data traffic and shrinking profit margins force network operators to look for intelligent methods of increasing the effective capacity of transmission systems. By employing advanced multicarrier transmission techniques, such as Nyquist wavelength division multiplexing, coherent

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8-channel WDM silicon photonics transceiver with SOA and semiconductor mode-locked laser

    Abstract: We demonstrate an integrated 8 by 14 Gbps dense wavelength division multiplexed silicon photonics transceiver that makes use of an external mode-locked laser as a light source and a single semiconductor optical amplifier for post-modulation signal amplification.

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PIX4life: photonic integrated circuits for bio-photonics

    Abstract: As key enabling technology, photonics has become critical in many fields. Advances in fabrication technologies have realized photonic integrated circuits not only for telecommunication wavelengths but also in the mid-infrared, and very importantly, in the visible. The

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Air-clad suspended nanocrystalline diamond ridge waveguides

Abstract: A hybrid group IV ridge waveguide platform is demonstrated, with potential application across the optical spectrum from ultraviolet to the far infrared wavelengths. The waveguides are fabricated by partial etching of sub-micron ridges in a nanocrystalline diamond thin film

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Integrated bio-photonics to revolutionize health care enabled through PIX4life and PIXAPP

    Abstract: Photonics has become critical to life sciences. However, the field is far from benefiting fully from photonics’ capabilities. Today, bulky and expensive optical systems dominate biomedical photonics, even though robust optical functionality can be realized cost-effectively on

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Wideband multi-stage CROW filters with relaxed fabrication tolerances

    Abstract: We present wideband and large free spectral range optical filters with steep passband edges for the selection of adjacent WDM communication channels that can be reliably fabricated with mainstream silicon photonics technology. The devices are based on

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Modification of Level Dependent ASE-Signal Beat Noise by Optical and Electrical Filtering in Optically Preamplified Direct Detection Receivers

  Abstract: We derive compact equations describing the modification of amplified spontaneous emission signal beat noise arising from optical and electrical filtering in optically preamplified direct detection receivers. In particular, we show that this modification typically results in a further

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Quantum confinement effects in GeSn/SiGeSn heterostructure lasers

  Abstract: The development of a light source on Si, which can be integrated in photonic circuits together with CMOS electronics, is an outstanding goal in the field of Silicon photonics. This could e.g. help to overcome bandwidth limitations and

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Calibrated Link Budget of a Silicon Photonics WDM Transceiver with SOA and Semiconductor Mode-Locked Laser

  Abstract: Based on the single channel characterization of a Silicon Photonics (SiP) transceiver with Semiconductor Optical Amplifier (SOA) and semiconductor Mode-Locked Laser (MLL), we evaluate the optical power budget of a corresponding Wavelength Division Multiplexed (WDM) link in which

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