| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a 1×2 wavelength selective switch having AWGs which have conventionally been needed three, but are integrated into two or one, and including no cross waveguides. <P>SOLUTION: A 1x2 wavelength selective switch which receives an N-wavelength-division multiplexed signal as an input signal, comprises: a first arrayed-waveguide grating for dividing a wavelength of the input signal to output the divided signals to N number of output waveguides; an optical switch array having N number of 1x2 optical switches into which N number of output light beams are input in parallel; a wavelength coupler array having N-1 number of 2x1 wavelength couplers to which output light beams from two optical switches are input in parallel; and a second arrayed-waveguide grating which outputs the input light beams from at least one of two output ports thereof. In the second arrayed-waveguide grating, output from a first optical switch is input to a first input port, output from a k-th wavelength coupler is input to a k+1-th input port, and output from an N-th optical switch is input to an N+1-th input port. <P>COPYRIGHT: (C)2013,JPO&INPIT |
