10 research outputs found
Die Zerstörung der organischen Substanz nach der Methode von Fresenius-Babo, bei vorheriger Behandlung mit Antiformin und die Bestimmung kleinster Bleimengen in den so behandelten Organen.
Photon detection and emission of epitaxial Ge on Si with potential applications in microwave photonic filters
Microwave photonic filter requires high-speed Radio frequency(RF)-optical and optical-RF signal conversion. Light sources and photo-detectors(PDs) are indispensible for such conversions. Monolithic integration of functions of photon emission and detection is demonstrated using epitaxial Ge on Si. The fabricated waveguided PD shows a high bandwidth of10 GHz with the responsivity of0.8 A/W and dark current of150 nA at-1V. The photoluminescence(PL) properties of P-implanted Ge are studied, and an improved annealing process is demonstrated to enhance the light emission by1 order. Electroluminescence(EL) is obtained from the waveguided n+-Ge light-emitting diode(LED), and the emitted power has been studied as a function of injected current. The successful demonstration of both waveguided PD and LED on single Si chip would be attractive for fabricating a compact size microwave photonic filter with low cost and high integrity.?2011 IEEE