Optical waveguides – With optical coupler – Movable coupler
Patent
1997-03-27
2000-02-29
Lee, John D.
Optical waveguides
With optical coupler
Movable coupler
G02B 626
Patent
active
060319496
ABSTRACT:
An optical slip ring system (1) has a rotor interface (2) which can bolt on to a high speed rotor in a modular manner. The rotor interface (2) has circular circuit boards (7) containing the necessary drive circuits and power supply circuits for transducers mounted on the rotor. The drive circuit on the boards (7) drive three rings of emitter LEDs (9). The drive is frequency modulated and there are a number of transducers associated with each ring of emitter LEDs (9). These signals are frequency division multiplexed to ensure real time processing takes place. A fixed support (3) has a single receiver LED (15) associated with each ring of emitter LEDs (9). Contactless power is provided by an inductive power supply having a primary winding (16) on the fixed support bracket (3) and a secondary winding (10) on the rotor interface (2).
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Esser et al., "Contactless High Speed Signal Transmission Integrated in a Compact Rotatable Power Transformer", Eurpoean Power Electronics Association. Sep. 1993 pp. 409-414.
Tsao et al., "Design of a Self-Routing Frequency Divison Multiple Access(SR-FDMA) Network Using an Optical Ring Filter with or without Gain as a Router", Journal of Lightwave Technology, vol. 13, No. 11, Nov. 1995, pp. 2168-2182.
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Forfas
Hao Victoria D.
Lee John D.
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