Patent ID: 6643064
Filing Date: 2003-11-04
Classification: G02B

Abstract:
An optical signal interleaver to separate an incident beam with all wavelengths into an Even-wavelength ray and an Odd-wavelength ray for output, which comprises:a first polarization beam splitter/combiner, which splits the incident beam into two separate beams with orthogonal polarizations; a first polarization rotator, which rotates the polarization of one of the separate beams so as to get two beams with the same polarization; an optical signal interleaving mechanism, which interleaves the two beams with the same polarization to form two light signals, each having the Even-wavelength ray and the Odd-wavelength ray orthogonal in their polarizations; a polarization beam displacer, which displaces and separates each of the two light signals with the Even-wavelength ray and the Odd-wavelength ray orthogonal in their polarizations into an E-polarized signal and an O-polarized signal; a second polarization rotator, which rotates the polarizations of one of the Even-wavelength ray signals and the adjacent Odd-wavelength ray signals to be orthogonal to those of the other Even-wavelength ray signal and the other Odd-wavelength ray signal; a third polarization rotator, which rotates the polarizations of the two Even-wavelength ray signals or the two Odd-wavelength ray signals to be orthogonal to their original type; a second polarization beam splitter/combiner, which combines the Even-wavelength ray signals with orthogonal polarizations and the Odd-wavelength ray signals with orthogonal polarizations into the Even-wavelength ray and the Odd-wavelength ray, respectively, for output; and a beam angle deflector, which is disposed between the polarization beam displacer and the output position of the Even-wavelength ray and the Odd-wavelength ray to deflect the traveling direction of the optical signals passing through so that the Even-wavelength ray and the Odd-wavelength ray can enter a double optical fiber collimator.