Tunable microwave photonic filter based on photoinjection semiconductor laser system
A microwave photon and laser technology, applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problems of high cost, high light source cost, complexity, etc., and achieve the effect of tunability, cost reduction, and continuous tunability.
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0029] Such as figure 1 as shown, figure 1 It is a schematic diagram of a tunable microwave photonic filter based on light injection semiconductor laser system provided by the present invention, the tunable microwave photonic filter includes a master laser 1, a first polarization controller 3, an adjustable optical attenuator 5, and an optical circulator 7. From laser 11, second polarization controller 9, third polarization controller 12, phase modulator 16, fourth polarization controller 18, optical isolator 20, 3dB optical coupler 23, Sagnac loop filter 26, single Mode dispersion fiber 27, optical amplifier 29 and photodetector 31.
[0030] Wherein, the output end of the main laser 1 is connected to the first end 2 of...
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