Patent ID: 6728041
Filing Date: 2004-04-27
Classification: G02B

Abstract:
An optical device comprising:a first input port for receiving multiwavelength optical signals; a first output port; a second output port; a filter for receiving the multiwavelength optical signals from the first input port, and selectively transmitting an optical signal having a specific wavelength; a first reflection unit for reflecting the optical signal having the specific wavelength back to the filter, so that the optical signal having the specific wavelength passes through the filter to be output from the first output port; a reflector for reflecting the multiwavelength optical signal from the filter except for the optical signal having the specific wavelength; and a second reflection unit for reflecting the multiwavelength optical signals except for the optical signal having the specific wavelength back to the reflector, so that the multiwavelength optical signals except for the optical signal having the specific wavelength are output from the second output port after being reflected by the reflector and the filter.