Optical Memory with Store/Forward Using All-Optical Triode Based on Tandem Wavelength Converter in Reflective Semiconductor Optical Amplifiers

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  • Maeda Yoshinobu
    Advanced Science and Technology Department, Toyota Technological Institute

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  • Optical Memory with Store/Foward Using All-Optical Triode Based on Tandem Wavelength Converter in Reflective Semiconductor Optical Amplifiers

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An all-optical triode based on a tandem wavelength converter was realized using cross-gain modulation in two reflective InGaAsP/InP semiconductor optical amplifiers. The reflective semiconductor optical amplifiers were utilized to improve output extinction ratio as well as logic operation output performance. The output signal power and extinction ratio from the first stage wavelength conversion were critical to the achievement of all-optical logic AND operation. The optical output power at the 1555 nm wavelength could be varied from 0.1 to 3.3 mW by a control beam which had the same wavelength. The output-input gain parameter can be changed from 0 to 1.6 when the average control power is altered from 0 to 48 μW. An optical memory with store/forward functions was demonstrated using the optical triode and a feedback system of the fiber.

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