A straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering
A technology of band-stop filtering and resonant system, which is applied in the field of optics, can solve the problems affecting the filtering effect and achieve good filtering effect
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specific Embodiment approach 1
[0020] Specific implementation mode one: combine figure 1 Describe this embodiment, a straight waveguide-loop-feedback waveguide-straight waveguide resonant system for band-stop filtering described in this embodiment, it includes a first resonant structure 1 and a second resonant structure 2, the first resonant structure The output end of 1 is connected to the input end of the second resonant structure 2;
[0021] The first resonant structure 1 includes a first coupler C 1 , the second coupler C 2 , the third coupler C3 and the fourth coupler C 4 , the second resonant structure 2 includes a fifth coupler C 5 , the sixth coupler C 6 , the seventh coupler C 7 and the eighth coupler C 8 , the first coupler C 1 , the second coupler C 2 and the fourth coupler C 4 constitutes the ring resonator of the first resonant structure 1, the second coupler C 2 , the third coupler C 3 and the fourth coupler C 4 constitutes the feedback waveguide of the first resonant structure 1, ...
specific Embodiment approach 2
[0026] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation of a straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering described in Embodiment 1. All optical fibers are single SMF-28 models. mode fiber.
specific Embodiment approach 3
[0027] Specific implementation mode three: combination figure 1 Describe this embodiment. This embodiment is a further definition of the straight waveguide-ring-feedback waveguide-straight waveguide resonant system for band-stop filtering described in the first embodiment. The ring resonance of the first resonant structure The cavity and the ring resonator of the second resonant structure are both horizontally symmetrical, and the second coupler C 2 and the fourth coupler C 4 respectively located at both ends of the horizontal axis of symmetry of the ring resonator of the first resonant structure 1, the sixth coupler C 6 and the eighth coupler C 8 They are respectively located at both ends of the horizontal symmetry axis of the ring resonant cavity of the second resonant structure 2 .
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