Photonic concentrator

Details Photonic concentrator Photonic concentrator

1992-01-28

1994-06-28

Pascal, Weslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359140, 359158, 370 50, H04J 1400

Patent

active

053252225

ABSTRACT:
A photonic concentrator is used to connect to a telecommunication network subscriber terminals sending and receiving data in the form of fixed length cells using asynchronous time-division multiplexing, in particular on an optical fiber. The concentrator comprises, for processing cells from a subscriber terminal, a time-division and non-synchronous statistical spectral multiplexing stage, a synchronization to a local clock stage, a spectral multiplexing and bit rate converter stage, and a periodic time-division multiplexing stage. To process cells addressed to subscriber terminals it comprises a periodic time-division demultiplexing, spectral multiplexing and bit rate adjuster stage, a bit rate converter stage and a spectral demultiplexing stage. The concentrator has applications in telecommunication networks.

REFERENCES:
patent: 5105292 (1992-04-01), Le Roy
IEEE Journal on Selected Areas in Communications, vol. 6, No. 7, Aug. 1988, pp. 1096-1106, New York, US; R. A. Thompson: "Architectures with improved signal-to-noise ratio in photonic systems with fiber-loop delay lines".
Patent Abstracts of Japan, vol. 10, No. 228 (E-426)[2284], Aug. 8, 1986; & JP-A-61 61 596 (NTT) Mar. 29, 1986.

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