Patent ID: 6876793
Filing Date: 2005-04-05
Classification: G02B

Abstract:
1. A wavelength-selective optical transmission system comprising: a first waveguide for transmitting a multiplexed optical signal therethrough; a second waveguide coupled to said first waveguide wherein a least one of said first and second waveguides having a set of wavelength-selective Bragg gratings disposed near a coupling section between said first and second waveguides to reflect a reflecting optical signal back to said first waveguide and for transmitting a contra-directional optical signal and a co-directional optical signal having respectively a contra-directional selected wavelength and a co-directional selected wavelength corresponding to said Bragg gratings wherein one of said contra-directional and co-directional wavelengths is chosen as a designated wavelength, and said reflecting optical signal and one of said contra-directional or co-directional optical signals are outside of a predefined range surrounding said designated wavelength.