Three-port optical circulator with isolation function
An optical circulator and three-port technology, which is applied in the field of optical fiber communication, can solve the problems of reducing the isolation of optical circulators, and achieve the effect of reducing the influence of crosstalk and improving isolation
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specific Embodiment approach 1
[0021] Please also refer to Figure 2a . Figure 2a It is a schematic structural diagram of the three-port optical circulator of the first embodiment. The three-port optical circulator includes a light splitting component 100 , a half-wave plate 200 , a 45° Faraday rotation plate 300 and an angle wedge plate 400 . Wherein, the light splitting component 100 includes first and second light splitting components 100a and 100b, and the half-wave plate 200 includes first and second half-wave plates 200a and 200b.
[0022] Wherein, light whose polarization direction is perpendicular to the direction of the optical path is referred to as P light, and light whose polarization direction is parallel to the direction of the optical path is referred to as S light. Depend on Figure 2a It can be seen that in the first optical path, the input optical signal S11 is separated into P light and S light after passing through the first light splitting component 100a from the first port 11, and ...
specific Embodiment approach 2
[0025] Please also refer to Figure 3a . Figure 3a It is a schematic structural diagram of the three-port optical circulator of the second embodiment. The three-port optical circulator includes a light splitting component 100 , a half-wave plate 200 , a 45° Faraday rotation plate 300 and an angle wedge plate 400 . Wherein, the light splitting assembly 100 includes first and second light splitting assemblies 100a and 100b, the half-wave plate 200 includes first and second half-wave plates 200a and 200b, and the angle wedge plate 400 includes a first angle wedge plate 400a and a second angle wedge Sheet 400b.
[0026] Wherein, light whose polarization direction is perpendicular to the direction of the optical path is referred to as P light, and light whose polarization direction is parallel to the direction of the optical path is referred to as S light. Depend on Figure 2a It can be seen that in the first optical path, the input optical signal S11 is separated into P light...
specific Embodiment approach 3
[0029] Please also refer to Figure 4a . Figure 4a It is a schematic structural diagram of the three-port optical circulator of the third embodiment. The three-port optical circulator includes a light splitting component 100 , a half-wave plate 200 , a 45° Faraday rotation plate 300 and an angle wedge plate 400 . Wherein, the light splitting component 100 includes first and second light splitting components 100a and 100b, and the half-wave plate 200 includes first and second half-wave plates 200a and 200b.
[0030] Wherein, light whose polarization direction is perpendicular to the direction of the optical path is referred to as P light, and light whose polarization direction is parallel to the direction of the optical path is referred to as S light. Depend on Figure 2a It can be seen that in the first optical path, the input optical signal S11 is separated into P light and S light after passing through the first light splitting component 100a, after passing through the a...
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