CONTROL METHOD OF OPTICAL ELEMENT

摘要

A control method of an optical element, including light sources to emit lights having different wavelengths from each other, and ring modulators connected in cascade along a light waveguide, is disclosed. Each ring modulator includes a ring resonator, and a wavelength adjustment electrode to adjust a resonance wavelength in the ring resonator, wherein the lights from the light sources are multiplexed to enter the light waveguide. The method includes having a light source emit the light; adjusting power to the wavelength adjustment electrode in each ring modulator, to obtain a value of the power causing the resonance wavelength of the ring resonator, equivalent to the wavelength of the light emitted from the light source; obtaining a relationship between the light sources and the values of the power corresponding to the ring modulators; and selecting the ring modulators corresponding to the light sources based on the relationship.

主权项

1. A control method of an optical element including
a plurality of light sources configured to emit lights having different wavelengths from each other, and a plurality of ring modulators configured to be connected in cascade along a light waveguide, wherein each of the ring modulators includes
a ring resonator, and a wavelength adjustment electrode configured to adjust a resonance wavelength in the ring resonator, wherein the lights emitted from the light sources are multiplexed to be incident on the light waveguide, the method comprising: having one of the light sources emit the light; adjusting power to be supplied to the wavelength adjustment electrode in a corresponding one of the ring modulators, to obtain a value of the power causing the resonance wavelength of the ring resonator in the one of the ring modulators, to be equivalent to the wavelength of the light emitted from the one of the light sources; obtaining a relationship between the light sources and the values of the power corresponding to the ring modulators; and selecting the ring modulators corresponding to the light sources based on the relationship between the light sources and the values of the power.