Patent ID: 7116860
Filing Date: 2006-10-03
Classification: H01S,H04J

Abstract:
1. An optical network comprising: an optical fiber carrying light signals of a plurality of wavelengths, each wavelength defining a communication channel for said optical network; a plurality of add couplers connected to said optical fiber, each add coupler inserting light signals of at least one wavelength into said optical fiber; a plurality of drop couplers connected to said optical fiber, each drop coupler splitting said light signals of said plurality of wavelengths from said optical fiber; and a plurality of wavelength blocker units connected to said optical fiber, each wavelength blocker unit filtering out optical signals at selected wavelengths on said optical fiber and distributed among groups of said pluralities of add and drop couplers so that each segment of said optical fiber between pairs of neighboring wavelength blocker units has at least three add and drop couplers.