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Super-miniature optical circulator

An optical circulator, ultra-miniature technology, applied in the field of optical fiber communication, can solve the problems of complex optical path, high cost, and inability to realize miniaturization

Pending Publication Date: 2019-05-28
桂林光隆光学科技有限公司
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Problems solved by technology

[0006] In the existing circulator scheme, a typical single-side fiber output circulator uses a collimator array, but the cost of the collimator array is much higher than that of a three-fiber collimator, and the optical path is also much smaller than that of a three-fiber collimator. Conventional optical fibers are much more complicated, and miniaturization is basically impossible

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments and related drawings.

[0028] The ultra-miniature optical circulator of the present invention includes a first collimator 21 , a first polarization beam splitter prism 31 , a first wave plate 41 , a first magneto-optical crystal 51 , and a second polarization beam splitter prism 32 . The first polarization beam splitting prism 31 includes a first total reflection surface 311 , a first polarization beam splitting surface 312 , a second total reflection surface 313 and a third total reflection surface 314 . The second polarization beam splitter prism 32 includes a fourth total reflection surface 321 , a second polarization beam splitter surface 322 and a fifth total reflection surface 323 .

[0029] Please refer to Figure 4 , 5 , 6, and 7 are schematic diagrams of an optical circui...

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Abstract

The invention provides a super-miniature optical circulator. The super-miniature optical circulator comprises a first collimator, a first polarization splitting prism, a first wave plate, a first magneto-optic crystal and a second polarization splitting prism. A light beam from a first optical fiber is coupled into a second optical fiber, and a light beam from the second optical fiber is coupled into a third optical fiber. The first optical fiber, the second optical fiber and the third optical fiber are merged into the three-fiber collimator, and fibers are emitted from the single side of theoptical circulator.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical circulator in the technical field of optical fiber communication. Background technique [0002] The optical circulator is a non-reciprocal optical device with multi-port input and output. Its function is to make the optical signal only transmit along the specified port sequence. Its typical structure has N (N greater than or equal to 3) ports, such as figure 1 As shown, when light is input through port 1, light is output through port 2, when light is input through port 2, light is output through port 3, and so on. [0003] Due to the sequential transmission characteristics of the optical circulator, it becomes an important device in two-way communication, and it can be used to separate the optical signals of forward transmission and reverse transmission in the same optical fiber. figure 2 An example of an optical circulator used for single-fiber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/095G02B27/28
Inventor 梁承宗
Owner 桂林光隆光学科技有限公司
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