High-speed adjustable optical comb filter
An optical comb filter, high-speed technology, applied in the coupling of optical waveguide, wavelength division multiplexing system, electromagnetic wave transmission system, etc., can solve the problem of non-adjustable central wavelength of comb filter and limit application, and achieve flexibility And the effect of improving adaptability and quick adjustment
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[0016] Further illustrate the present invention below in conjunction with accompanying drawing:
[0017] Such as figure 1 and figure 2 As shown in the figure, a high-speed tunable optical comb filter consists of a single fiber collimator 1, a first polarization-shifting crystal 2, a first half-wave plate group 3, and a birefringent retardation crystal 4 placed in sequence in the same horizontal optical path direction. , second half-wave plate group 5, electro-optic retardation plate 6, third half-wave plate group 7, second polarization-shifted crystal 8, fourth half-wave plate group 9, roof prism 10, third polarization-shifted crystal 11 and dual optical fiber Collimator 12; the parallel light beam separated by the second polarization-shifting crystal is collimated and coupled to the double-fiber collimator by the roof prism and the third polarization-shifting crystal; the center of the optical comb filter is realized by controlling the applied voltage of the electro-optical...
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