Patent ID: 6836581
Filing Date: 2004-12-28
Classification: G02B

Abstract:
An optical device for processing wavelength divisional multiplexed optical signals between a first port communicating odd channels and even channels and second and third ports communicating odd and even channels, respectively, and the optical device comprising:a linear polarizer coupled to the first port for linearly polarizing the optical signals; a first filter with a first free spectral range substantially corresponding to a channel spacing between adjacent odd or even channels, the first filter being coupled with the linear polarizer for splitting and combining odd and even channel sets depending on a propagation direction; and a second filter optically coupled with the first filter and the second and third ports, the second filter having a second free spectral range substantially corresponding to the channel spacing between adjacent odd or even channels, the second filter being coupled with the first filter for optical processing of odd and even channels therewith.