The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A low-frequency electrical spectrum analysis method is researched for evaluating broadband characteristics of high-speed dual-parallel Mach-Zehnder modulators (DPMZMs) based on dual-frequency modulation and fixed-frequency bias. The method enables the broadband and high-resolution evaluation for the modulation depth and half-wave voltage of a high-speed DPMZM by using a low-frequency photodetector...
An on-wafer and self-calibrated scheme is proposed and demonstrated for self-referenced microwave characterization of a silicon integrated optical transceiver. The proposed self-calibration method enables on-wafer selective extraction of microwave characteristic parameters of high-speed modulators and photodiodes in the integrated optical transceiver, without the need for extra electrical-to-optical...
Cosmic rays are high energy particles travelling at near the speed of light. Unlike electromagnetic waves, they are subjected to the influence of magnetic field. Being small in size, some of these particles can penetrate through certain low-density metals with no ionization at all. Some of the cosmic particles will bombard with the atoms in the metal, forming positive ions. Aluminum and silver are...
This paper describes the fabrication and high speed characterization for uni-traveling-carrier photodetectors (UTC-PD) with dipole-doping layers. The dipole-doping InGaAs/InP layer has been introduced at the InGaAs (absorption layer) and InP (collection layer) interface to prevent current blocking in our UTC-PD devices. These UTC-PDs have achieved high photocurrent of 52 mA, high responsivity of 0...
Interarea oscillatory modes pose a threat to power system stability. An algorithm is presented for the identification and analysis of such modes from high resolution phasor measurement data. The process outlined includes data collection, conditioning, extraction of the primary oscillatory frequency, and determination of participating areas of the system. Additionally a visualization methodology is...
A detailed study of Through-Silicon-Vias (TSV) electrical properties is presented. A basic test structure is a dual-TSV made of tungsten TSVs based on hybrid copper-adhesive wafer bonding. Three measurement techniques are utilized: low frequency TSV capacitance characterization using an LCR meter; inductance extraction from the reflection coefficient of TSV chains; TSV frequency dependent capacitance...
We propose and demonstrate measurement of the frequency response of an electroabsorption (EA) modulator using an extended small-signal power measuring technique. In this technique, the modulator is driven by a microwave carrier amplitude modulated by a low-frequency signal, and the modulator frequency response is obtained without the need of a high-speed photodetector. Based upon the nonlinear characteristics...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.