If you continue, you will be taken to the alternate language home page. Editor's Picks Videos. Philippe Hertig. Contact Details. I have the most interesting profession: advising top leaders on critical people decisions, which leads to stronger and more competitive companies. My Areas of Focus. What We Do. Get in touch. Send Philippe a Message. Thought Leadership by Philippe Hertig. Combining Apache Madlib with the super powers of Postgres extensions allows such We look at data from human sleep monitoring devices and heart rate monitors to explore and exercise the capabilities of this powerful combination and see how we can set alarms and thresholds to warn of dangerous situations.
Predictive analytics and visualization are also made much simpler which we demonstrate using this health data. He is a founder and CTO of Numericc. I am developing a remote monitoring solution for IT infrastructure. I would like to share my experiences of migrating to IotDB.
Trevor is a seasoned geospatial professional. More recently he has developed a passion for timeseries databases! In this talk, we will introduce the new features that IoTDB brings in the past year, including the cluster module, the UDF, the trigger, multi-variable time-series support, etc.
We will also share some practice solutions like how to implement hot backup in this talk. The universe is full of standards which compete in multiple dimensions. Same truth applies to manufacturing industry. Space between standards is filled by various software libraries which are intended to let both - computers as well as micro controllers interact with end hardware.
During this presentation we will have a look on Open Systems Interconnection OSI model and see where typical fieldbus technology. We will briefly see major differences in usage of field buses compared to traditional TCP or UDP based communications. Finally we will compare how to interact with remaining two standards using APIs introduced earlier. Starting from he was involved in multiple projects involving middleware projects coming out of Apache Software Foundation. But creating drivers for "N" protocols in "M" languages is a maintenance nightmare.
Net and Python, but also explain how we manage to do this via code-generation. In the second part I'll take you on a journey through this toolset. Full blooded Apache and Open-Source enthusiast. Invests all of his work and private time in multiple Apache Projects. The splitting imbalance represented by the k factor results in the appearance of the extinction ratio. The Mach-Zehnder modulator is never completely off and we can in fact define the extinction ratio coefficient directly from the k factor as:.
Moreover, the imaginary j factor in front of the sine component represents a spurious phase shift that appears when the extinction ratio is not ideally infinite. There are now phase shift terms that depend on the average of the two electrical inputs, while the intensity modulation is controlled by the difference of the two electrical inputs. In the reference article [1], the chirp factor is defined as the ratio between the modulator output frequency modulation and amplitude modulation:.
In an ideal Mach-Zehnder modulator with perfect power split between arms and driven with opposite voltages, the chirp factor can be assumed equal to zero [3]. There might be other sources of chirp-like asymmetry of construction between the upper and lower arms [4]. The chirp factor as defined above is used in the industry to characterize spurious frequency modulation at the output of the modulator and can be measured directly, see for instance [5].
A modulator is one of the most expensive components in a high-speed transmitter. The bandwidth, footprint i. If the modulator design is sub-optimal, the rest of the system cost and complexity can dramatically increase, with only marginal gains in performance.
OptSim and OptSim Circuit fit the bill. If you are a supply chain to the transceiver designers, you want an optimal device-level design of the MZM to meet with the packaging, bandwidth and energy consumption specifications from your customers.
This example demonstrates the simulation of a 3D Mach-Zehnder Modulator implemented on silicon-on-insulator. To simulate behavior of an MZM, you need advanced tools to enhance and accelerate user-modeling capabilities and provide real field design scenarios using extensive industry specifications.
Koyama and K. Iga, Frequency chirping in external modulators, J. Lightwave Technol. Devaux, Y. Sorei, J. Kerdiles, Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter, J. RSoft Photonic Device Tools. Photonic System Tools.
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