Passive optical telecommunication system

Details Passive optical telecommunication system Passive optical telecommunication system

H - Electricity

04

B

H04B 10/20 (2006.01) H04B 10/207 (2006.01) H04J 14/02 (2006.01) H04L 5/14 (2006.01)

Patent

CA 2120116

ABSTRACT OF THE DISCLOSURE In a passive optical telecommunication system having a central station communicating via respective optical waveguides with a number of decentralized stations, an electrical carrier signal is DPSK-modulated in the upstream transmission, after which the electrical signal modulated in this way effects the intensity modulation of the emitted light; in the downstream signal transmission, the emitted light is intensity-modulated by a preferably scrambled NRZ baseband signal. The carrier signal is derived by frequency multiplication from the regenerated reception clock signal of the decentralized station.

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