Patent ID: 6674972
Filing Date: 2004-01-06
Classification: H04B

Abstract:
An optical device that compensates for polarization mode dispersion (PMD) of an optical signal, comprising:a first rotating device that rotates the polarization angle of the optical signal in a frequency-dependent manner; a first order PMD compensator that receives the rotated signal and compensates for first-order PMD; and a second rotating device that receives the compensated signal and rotates the polarization angle of the compensated signal in a frequency-dependent manner to compensate for higher order PMD, wherein passing the optical signal through the first rotation device in a forward direction causes a first transformation R(&ohgr;K) of the optical signal and passing the optical signal in a backward direction causes a second transformation Râˆ’1(&ohgr;K), wherein &ohgr; denotes the deviation from a central angular frequency of the optical signal and K relates to a variable delay.