ATM switch

Details ATM switch ATM switch

1997-05-07

1999-04-06

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359117, 370395, H04J 1402

Patent

active

058926046

ABSTRACT:
An ATM switch includes a plurality of input line corresponding units, a plurality of output line corresponding units, and a wavelength shifting unit. The wavelength shifting unit is arranged between the input line corresponding units and the output line corresponding units to shift optical signals having different wavelengths in a plurality of wavelength-multiplexed optical signals arriving from the input line corresponding units and output the wavelength-multiplexed optical signals. Each input line corresponding unit includes an input-side basic switch for distributing N (N is a positive integer) cells respectively input to input ports to N lines, an electro-optic converter for converting the cells into optical signals having different wavelengths in units of N lines, and a multiplexer for multiplexing the optical signals into one wavelength-multiplexed optical signal. Each output line corresponding unit includes a demultiplexer for demultiplexing the wavelength-multiplexed optical signal in units of wavelengths, an opto-electric converter for converting outputs from the demultiplexer into electrical signals, respectively, and an output-side basic switch for distributing the cells converted into the electrical signals to a plurality of output ports.

REFERENCES:
patent: 5303078 (1994-04-01), Brackett et al.
patent: 5475679 (1995-12-01), Munter
patent: 5506714 (1996-04-01), Nishio
patent: 5604734 (1997-02-01), Buhrgard
"Polarization-insensitive arrayed-waveguide grating wavelength multiplexer on silicon", by H. Takahashi et al., Optics Letters, vol. 17, No. 7, Apr. 1, 1992, pp. 499-501.
"Nonblocking Networks for Fast Packet Switching", by R. Melen et al., IEEE, 1989, pp. 548-557.
"A High-Speed ATM Switch with Input and Cross-Point Buffers", by Y. Doi et al., IEICE Trans, Commun, vol. E76-8, No. 3, Mar. 1993, pp. 310-314.

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