Patent ID: 6766084
Filing Date: 2004-07-20
Classification: G02B

Abstract:
An optical device comprising:a first I/O waveguide carrying an optical signal with a plurality of wavelengths; a second I/O waveguide carrying a first wavelength of the plurality of wavelengths; a third I/O waveguide carrying a second wavelength of the plurality of wavelengths; a first single-side-pass filter optically coupled to the first I/O waveguide, wherein the first single-side-pass filter reflects the first wavelength between the first I/O waveguide and the second I/O waveguide, and the first single-side-pass filter passes the second wavelength between the first I/O waveguide and the third I/O waveguide; and a housing, and wherein the first I/O waveguide extends outwardly from the housing, and wherein the first single-side-pass filter is mounted in the housing, and wherein the first single-side-pass filter is a short-pass filter, and wherein the first single-side-pass filter includes a transparent substrate on which several thin layers of different types of metal have been deposited by a sputtering technique.