Technique for interchanging wavelengths in a multi-wavelength system
AssigneeNortel Networks Limited
InventorsAbel C. Dasylva, Delfin Y. Montuno, Guo-Qiang Wang
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Abstract
A technique for interchanging wavelengths in a multi-wavelength system having W wavelength channels is disclosed. In one embodiment, the technique is realized by selectively directing a pair of adjacent frequency channels corresponding to a respective pair of adjacent wavelength channels based upon a routing algorithm. The frequencies of the selectively directed pair of adjacent frequency channels are then interchanged. The interchanged frequencies of the selectively directed pair of adjacent frequency channels are then selectively shifted based upon a binary representation of each interchanged frequency.
Claims20
A method for interchanging wavelengths in a multi-wavelength system having W wavelength channels, the method comprising the steps of:
- selectively directing a pair of adjacent frequency channels corresponding to a respective pair of adjacent wavelength channels based upon a routing algorithm;
- interchanging the frequencies of the selectively directed pair of adjacent frequency channels;
- and
- selectively shifting the interchanged frequencies of the selectively directed pair of adjacent frequency channels based upon a binary representation of each interchanged frequency.
An apparatus for interchanging wavelengths in a multi-wavelength system having W wavelength channels, the apparatus comprising:
- a switching element for selectively directing a pair of adjacent frequency channels corresponding to a respective pair of adjacent wavelength channels based upon a routing algorithm;
- a state changer for interchanging the frequencies of the selectively directed pair of adjacent frequency channels;
- and
- a connection module for selectively shifting the interchanged frequencies of the selectively directed pair of adjacent frequency channels based upon a binary representation of each interchanged frequency.
A method for interchanging wavelengths in a multi-wavelength system having W wavelength channels, the method comprising the steps of:
- selectively switching a pair of adjacent optical frequency signals corresponding to a respective pair of adjacent wavelength channels to one of two output signal pairs;
- interchanging the frequencies of the selectively switched pair of adjacent optical frequency signals from one of the two output signal pairs;
- and
- selectively shifting the interchanged frequencies of the selectively switched pair of adjacent optical frequency signals based upon a value of a binary representation of each interchanged frequency.
An apparatus for interchanging wavelengths in a multi-wavelength system having W wavelength channels, the apparatus comprising:
- a switching element for selectively switching a pair of adjacent optical frequency signals corresponding to a respective pair of adjacent wavelength channels to one of two output signal pairs;
- a state changer for interchanging the frequencies of the selectively switched pair of adjacent optical frequency signals from one of the two output signal pairs;
- and
- a connection module for selectively shifting the interchanged frequencies of the selectively switched pair of adjacent optical frequency signals based upon a value of a binary representation of each interchanged frequency.
Dependencies are inferred from the claim text.