Single-fiber bidirectional receiving and sending device based on pentagonal prism and interference filter
A single-fiber two-way transceiver and interference filter technology, which is applied in optical components, coupling of optical waveguides, light guides, etc., can solve problems such as small angle range, different linear expansion coefficients, and affecting system reliability, so as to improve functions, Effect of Polarization Dependent Loss Reduction
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[0040] Example 1
[0041] Such as figure 2 As shown, a single-fiber bidirectional transceiver device based on a pentagonal prism and an interference filter includes a metal casing 1 and a laser transmitter 2, an optical fiber assembly 3, and a laser detector 4 fixedly mounted on the metal casing 1. , The laser transmitter 2 and the optical fiber assembly 3 are arranged in a horizontal direction, and the laser detector 4 is arranged perpendicular to the optical path between the laser transmitter 2 and the optical fiber assembly 3.
[0042] A collimating lens 5, an optical isolator 6, a pentagonal prism 7, and a first lens 8 are sequentially arranged on the optical path between the laser transmitter 2 and the optical fiber assembly 3. A second lens 9 is provided between the pentagonal prism 7 and the laser detector 4. The pentagonal prism 7 is fixedly connected to the metal housing 1 through a metal block, and each lens is placed on a corresponding lens tube seat and glued and fixe...
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[0047] Example 2
[0048] In order to further reduce the structural size of the optical splitter, a new design plan is given, such as Figure 4 with Figure 5 Shown.
[0049] The component composition of the single-fiber bidirectional transceiver of this embodiment is the same as that of embodiment 1, wherein the shape of the pentagonal prism is designed as follows: the first side surface I and the third side surface III of the pentagonal prism 7 are parallel to each other, and are respectively parallel to the second side surface Ⅱ is vertical, and the material is glass with refractive index n=1.5. The incident angle of the incident light passing through the filter 10 is α=15°, the fourth side IV of the pentagonal prism 7 is inclined at β=47.5° relative to the first side I; the light beams passing through the first lens 8 and the second lens 9 respectively Perpendicular to each other.
[0050] When the single-fiber bidirectional transceiving device provided in this embodiment is u...
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