Photonic time-division multiplexer and demultiplexer

Details Photonic time-division multiplexer and demultiplexer Photonic time-division multiplexer and demultiplexer

1992-01-28

1994-06-07

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359117, 359139, 370 50, H04J 1400

Patent

active

053194845

ABSTRACT:
A multiplexer and a demultiplexer time-division multiplex and demultiplex binary data in the form of cells having a fixed number of bits. For example, to time-division multiplex cells comprising 424 bits the original bit rate of a block of 16 bits of a cell is multiplied by four, each cell being divided into a series of 27 blocks. The blocks constituting each cell are concatenated after their bit rate has been multiplied. Similarly, the demultiplexer divides the bit rate by dividing each cell into blocks, separating consecutive blocks by a gap and dividing the bit rate successively in each block. The multiplexer and demultiplexer have applications in time-division multiplex telecommunication networks.

REFERENCES:
Patent Abstracts of Japan, vol. 10, No. 228 (E-426)[2284], Aug. 8, 1986; & JP-A-61 61 956 (NTT) Mar. 29, 1986.
Patent Abstracts of Japan, vol. 10, No. 221 (E-424)[2277], Aug. 2, 1986; & JP-A-61 56 594 (NTT) Mar. 22, 1986.
Conference Record, IEEE Globa Telecommunications Conference & Exhibition, Hollywood, Fla., Nov. 28-Dec. 1, 1988, vol. 2, pp. 933-937; S. Suzuki et al.: "Photonic wavelength-division and time-division hybrid switching networks for large line-capacity broadband switching systems."
Proceedings of the National Communications Forum, Rosemont, Ill., Sep. 28-30, 1987, vol. XXXXI, Book II, pp. 1282-1295; T. Yasui: "Overview of photonic switching systems technology."

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