Sagnac interferometer all-optical logic logic based on erbium-doped fiber coupler
An erbium-doped fiber and coupler technology, which is applied in the field of optical information to achieve the effects of reducing pump optical power, low pump power, and fast switching response speed
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[0017] The embodiments of the present invention will be described in detail below in conjunction with the drawings.
[0018] Such as figure 1 As shown, the Sagnac interferometer all-optical logic device based on the erbium-doped fiber coupler in this embodiment includes a signal source 1-1, a signal source 1-2, a circulator 2-1, a circulator 2-2, and a multiplexer 3. , Erbium-doped fiber coupler 4, pump source 5, optical isolator 6, splitter 7, filter 8-1, filter 8-2, the wavelength range of the pump wave generated by the pump source 5 is 900nm- 980nm, the power range is 0~1W. The signal source 1-1, 1-2 produces the signal wavelength range 1500nm-1550nm, the power is 1mW. The cross-coupling coefficient of the erbium-doped fiber coupler 4 when no pump light is applied is 0.5. The passband wavelength range of the first filter 8-1 and the second filter 8-2 is 1500 nm-1550 nm. The first port of the multiplexer 3 is a 50% port, and the second port is a 50% port.
[0019] The signal ...
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