Optical device having switching function

Details Optical device having switching function Optical device having switching function

G - Physics

02

F

G02F 1/19 (2006.01) G02B 6/34 (2006.01) G02F 1/313 (2006.01) H04B 10/213 (2006.01) H04J 14/02 (2006.01) H04Q 3/52 (2006.01) G02B 6/12 (2006.01) G02F 1/01 (2006.01)

Patent

CA 2177789

An optical device having a switching function has a waveguide filter for switching an input signal light including at least one specific wavelength to be either transmitted or reflected. The input signal lights of wavelengths .lambda.1 to .lambda.n are transmitted to the input waveguide. When the waveguide filter is off, the signal lights of all wavelengths are transmitted to the output port. when the waveguide filter is on, the signal lights of wavelengths .lambda.2 to .lambda.n are transmitted, but the signal light of wavelength .lambda.1 is reversed and output to the drop port. If the thin film heaters are off, a signal light of wavelength .lambda.1 is output (dropped) from the drop port. If the thin film heaters are on, it is reversed and transmitted to the output port.

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