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Soliton-To-Level Converter

IP.com Disclosure Number: IPCOM000042194D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Zappe, HH: AUTHOR

Abstract

Soliton shooters arranged in a feedback loop, as input to an inductor, operate to convert a soliton input to a level output usable by other types of devices. The logic inputs to presently known soliton devices are levels (long pulses), whereas the output of a soliton device is a short pulse (2-3 ps long). This does not allow soliton outputs to control soliton device inputs. A circuit which produces large long pulses with soliton devices is shown in Fig. 1. It is composed of three shooters l-3, which connect to an inductance L (a control line). If a soliton is produced at the input, it will inject a soliton into inductance L. This soliton, through the feedback circuit, through shooter 3 and injector shooter 2, causes a train of solitons all of which are injected into inductance L.

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Soliton-To-Level Converter

Soliton shooters arranged in a feedback loop, as input to an inductor, operate to convert a soliton input to a level output usable by other types of devices. The logic inputs to presently known soliton devices are levels (long pulses), whereas the output of a soliton device is a short pulse (2-3 ps long). This does not allow soliton outputs to control soliton device inputs. A circuit which produces large long pulses with soliton devices is shown in Fig. 1. It is composed of three shooters l-3, which connect to an inductance L (a control line). If a soliton is produced at the input, it will inject a soliton into inductance L. This soliton, through the feedback circuit, through shooter 3 and injector shooter 2, causes a train of solitons all of which are injected into inductance L. As the current in inductance L increases, since it flows through the injector shooter 2, it will counter-bias the output and ultimately prevent soliton propagation. This stops the action of the feedback circuit through shooter 3. Note that the injector could be a fully powered soliton device instead of a shooter. A resistance Rb is inserted in series with inductance L so that the current slowly decays (Fig. 2). If the resistance Rb should be eliminated, the current remains in inductor L and it can be reset with a similar circuit which is biased in the opposite direction. As shown in Figs. 3 and 4, such a pulse is able to switch a low gain high margin three-junc...