Abstract: A wavelength conversion device includes an optical medium that converts a first wavelength-multiplexed light including a plurality of first wavelengths belonging to a first wavelength band to a second wavelength-multiplexed light including a plurality of second wavelengths belonging to a second wavelength band, a first monitor configured to monitor power of the plurality of second wavelengths belonging to the second wavelength band, a storage unit that holds control information for adjusting a conversion characteristic of the optical medium, and a control unit configured to perform control of adjusting the conversion characteristic of the optical medium based on the control information acquired from the storage unit according to a first monitoring result by the first monitor.

Abstract: A method of molding a molded article, the method employing a die provided with a die main body including a movable mold and a fixed mold, a first slide core that is disposable inside the die main body, and a second slide core that is disposable inside the die main body in a state intersecting with the first slide core, and the method including: a mold-closing step including closing the die main body, disposing the first slide core inside the die main body, and disposing the second slide core inside the die main body to intersect with the first slide core; and a charging step of charging a molding material into the inside of the die, an undercut portion of the molded article being molded by the first slide core and the second slide core.