Title:
WAVELENGTH SELECTOR SWITCH
Document Type and Number:
WIPO Patent Application WO/2023/136359
Kind Code:
A1
Abstract:
Provided is a wavelength selector switch with reduced crosstalk and a more compact size. The wavelength selector switch includes: one or more input ports; one or more output ports; a polarization adjustment device that adjusts the polarization state of light incident from the input port; a dispersing element that splits wavelength-multiplexed light incident from the input port; and a deflector element that controls the deflection of the split light. The dispersing element is a liquid crystal diffractive element having a liquid crystal alignment pattern in which the orientation of the optical axis derived from the liquid crystal compound is continuously rotating and changing along at least one direction in a plane.
More Like This:
| JP2561464 | INDUSTRIAL APPLICABILITY! |
| JPH01233429 | OPTICAL TAPPING DEVICE |
Inventors:
HISANAGA KAZUYA (JP)
SAITOH YUKITO (JP)
YANAI YUJIRO (JP)
SAITOH YUKITO (JP)
YANAI YUJIRO (JP)
Application Number:
PCT/JP2023/001181
Publication Date:
July 20, 2023
Filing Date:
January 17, 2023
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02F1/31; G02B5/18; G02B5/30; G02F1/13
Domestic Patent References:
| WO2019203357A1 | 2019-10-24 | |||
| WO2019189675A1 | 2019-10-03 |
Foreign References:
| JP2008122856A | 2008-05-29 | |||
| US20050276537A1 | 2005-12-15 | |||
| JP2017054004A | 2017-03-16 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
Download PDF: