Wavelength-selective optical cross-connect

Details Wavelength-selective optical cross-connect Wavelength-selective optical cross-connect

1998-07-27

2000-05-23

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Switch

385 24, 385 37, 385 46, G02B 626

Patent

active

060673893

ABSTRACT:
An optical switch includes an optical router portion for distributing multi-wavelength optical signals received at input ports of the switch, an optical combiner portion for supplying multi-wavelength signals at the output ports of the switch, and optical fibers for interconnecting the optical router portion and optical combiner portion. Selected ones of the interconnecting optical fibers include wavelength-selective elements, such as fiber gratings, which are capable of transmitting or reflecting individual channels within the multi-wavelength optical signal so that a selected channel of a particular wavelength can be routed from any of the input ports to any of the output ports of the switch. In one exemplary embodiment, the optical router portion includes a plurality of input optical couplers, wherein each input optical coupler is associated with a corresponding input port of the optical switch. Similarly, the optical combiner portion includes a plurality of output optical couplers, wherein each output optical coupler is associated with a corresponding output port of the optical switch. Each input optical coupler together with its associated fiber gratings on the interconnecting optical fibers is used for distributing the signals received via the input ports while each output optical coupler together with its associated fiber gratings is used for combining the signals to be supplied at the output ports of the switch.

REFERENCES:
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patent: 5712932 (1998-01-01), Alexander et al.
Jorg Hubner et al., "Strong Bragg Gratings in Non Sensitized Low Loss Planar Waveguides as Building Blocks for WDM Network Components", SPIE, vol. 2998, No. 12, Photonics West 97, San Jose, CA 1997, pp. 1-11.

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