Patent ID: 7366209

Claim:
An orthogonal polarization multiplexing transmission apparatus in wavelength division multiplexing, comprising: a plurality of orthogonal polarization multiplexing means for orthogonal-polarization-multiplexing odd-numbered array waves and even-numbered array waves in each of wavelength bands divided into a plurality; a plurality of dispersion compensating means for dispersion-compensating a signal orthogonal-polarization-multiplexed by each orthogonal polarization multiplexing means; and multiplexing means for multiplexing each signal dispersion-compensated by each dispersion compensating means, wherein a band rendered wider than a wavelength spacing on orthogonal polarization multiplexing is provided between said wavelength bands divided into a plurality, and wherein, in two adjacent wavelength bands, either a signal of the longest wavelength of a short wavelength band or a signal of the shortest wavelength of a long wavelength band is uninserted.