| 摘要 |
PROBLEM TO BE SOLVED: To provide a wavelength selection switch with which it is possible to switch ports in a wavelength dispersion direction by discretizing a diffraction angle for each prescribed wavelength band.SOLUTION: An wavelength selection switch is configured from an input port 1001, a lens 1002, a short FSR diffraction grating 1003, a diffraction grating 1005, a lens 1006, a first MEMS mirror 1007, a concave mirror 1008, a second MEMS mirror 1009, a lens array 1010, and an output port array 1011. An inputted light passes through the input port 1001, the lens 1002, the short FSR diffraction grating 1003, the diffraction grating 1005, the lens 1006, the first MEMS mirror 1007, the concave mirror 1008, the second MEMS mirror 1009, and the lens array 1010 in the order stated, and is outputted to the output port array 1011. |
