| 摘要 |
A light-controlled light modulator can achieve high-speed, low-loss wavelength conversion. Continuous light with a wavelength lambdaj is launched into an MMI coupler via a port, and is split into two parts by the MMI coupler, which are led to a loop-type interferometer. In the loop-type interferometer, the two parts travel separately around the loop as clockwise traveling light and counterclockwise traveling light, are combined by the MMI coupler again via a filter-equipped phase modulator, thereby being emitted to the port. In this state, signal light lambdai(s) with a wavelength lambdai is launched into the filter-equipped phase modulator via a port. Even when the wavelength lambdai of the signal light lambdai(s) is equal to the wavelength lambdaj of the wavelength converted output light, the wavelength conversion can be achieved with preventing noise from being mixed into the output light emitted from a port.
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