Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1984-05-07
1986-05-20
Orsino, Jr., Joseph A.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
350 9615, 455607, H04B 900
Patent
active
045906190
ABSTRACT:
A star coupler for an optical data bus system in a star configuration or other local networks comprises a passive optical star coupler in the form of a transit mixer which distributes the optical signals, transmitted by subscriber transmitters and supplied to the passive optical star coupler by incoming optical waveguides and output via outgoing optical waveguides. The star coupler exhibits an additional optical transmitter whose optical signals are likewise capable of being input coupled in the passive optical star coupler, as well as a listening device for listening to the optical signals supplied to the passive optical star coupler in the incoming optical waveguides. The listening device emits signals which are related to the detected signals. Embodiments of a star coupler with a passive optical reflection star coupler are also described.
REFERENCES:
patent: 4446515 (1984-05-01), Sauer et al.
Finley, Jr., "Optical Fibers in Local Area Networks", IFOC, vol. V, pp. 47-55.
Winzer, "Single-Mode and Multimode All-Fiber Directional Couplers for WDM", Applied Optics, vol. 20, No. 18, Sep. 15, 1981, pp. 3128-3135.
Orsino Jr. Joseph A.
Siemens Aktiengesellschaft
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