Patent ID: 6292599
Filing Date: 2001-09-18
Classification: G02B,G02F,H04Q

Abstract:
A wavelength selective switch system for switching optical wavelengths comprising:two multi-mode waveguides;a first wavelength selective cross-connection structure;two phase control elements;four connection waveguides;said first wavelength selective cross-connection structure arranged between said two multi-mode waveguides,the first multi-mode waveguide having one access waveguide on a first side and two access waveguides on a second side,the second multi-mode waveguide having two access waveguides on a first side and one access waveguide on a second side,said first wavelength selective cross-connection structure having two access waveguides on a first side and two access waveguides on a second side,the first connection waveguide connecting the first access waveguide on the second side of the first multi-mode waveguide and the first access waveguide on the first side of the first wavelength selective cross-connection structure,the second connection waveguide connecting the second access waveguide on the second side of the first multi-mode waveguide and the first access waveguide on the second side of the first wavelength selective cross-connection structure,the third connection waveguide connecting the second access waveguide on the first side of the first wavelength selective cross-connection structure and the first access waveguide on the first side of the second multi-mode waveguide,the fourth connection waveguide connecting the second access waveguide on the second side of the first wavelength selective cross-connection structure and the second access waveguide on the first side of the second multi-mode waveguide,wherein the first phase control element is arranged in the first connection waveguide and the second phase control element is arranged in the third connection waveguide.