Patent ID: 6236480
Filing Date: 2001-05-22
Classification: H04B,H04J

Abstract:
A method for launching a plurality of optical signals having different wavelengths into an optical fiber for transport through a communications system, comprising the steps of:launching a first optical signal having a first wavelength .lambda..sub.1 into the fiber, wherein said first optical signal has a first polarization;launching a second optical signal having a second wavelength .lambda..sub.2 into the fiber, wherein said second wavelength .lambda..sub.2 is adjacent to said first wavelength .lambda..sub.1, wherein said second optical signal has a first polarization;launching a third optical signal having a third wavelength .lambda..sub.3 into the fiber, wherein said third wavelength .lambda..sub.3 is adjacent to said second wavelength .lambda..sub.2, wherein said third optical signal has a second polarization orthogonal to said first polarization; andlaunching a fourth optical signal having a fourth wavelength .lambda..sub.4 into the fiber, wherein said fourth wavelength .lambda..sub.4 is adjacent to said third wavelength .lambda..sub.3, wherein said fourth optical signal has a second polarization orthogonal to said first polarization.