H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/1.8
H04J 14/02 (2006.01) H04B 10/24 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2026232
ABSTRACT OF THE DISCLOSURE In a bidirectional light waveguide telecommunication system having a passive light waveguide bus network extending between a switching center and a plurality of subscriber locations, only the switching center is designed for a normal bidirectional wavelength division multiplex operation and is provided for this purpose with an electro-optical transmission element, an opto-electrical receiving element and an optical filter, whereas only a combined opto-electrical receiving/electro-optical transmitting module that respectively works only in the time separation mode and is designed for emitting light having a wavelength for reception by the opto-electrical receiving element of the switching center is provided in the subscriber locations. In this combined receiving/transmitting module, the transmitting diode can be used, in alternation, as a receiving diode; alternatively thereto, the combined receiving/transmitting module can be formed with a laser module provided with a laser diode transmitted and with a monitor photodiode which is used, in alternation, as a receiving diode.
Neuhaus Thomas
Panzer Klaus
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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