Programmable optical fiber mode stimulation and coupling method
A mode excitation and optical fiber technology, applied in the coupling of optical waveguide, optics, optical components, etc., can solve the problems of accuracy affected by environmental factors, large inter-mode interference and inter-mode crosstalk, complex grating writing, etc., to achieve excitation The effect of flexible and adjustable mode, low coupling insertion loss and high mode isolation
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[0015] In order to further explain the technical means and effects of the present invention to achieve the purpose of the invention, in conjunction with the accompanying drawings, the optical fiber mode selective excitation and coupling system based on the programmable control of the liquid crystal on silicon and the polarization beam splitter proposed according to the present invention The specific implementation and working principle are described in detail.
[0016] by figure 1 It can be seen that the method provided by the present invention adopts such as figure 1 The system shown is a fiber mode excitation and coupling system, including two single-mode fibers 1, 2, two collimating lenses 3, 4, two liquid crystal on silicon 7, 9, and two Faraday rotators 6, 8, a polarization beam splitter 5 and a beam combiner 10. The laser light from the single-mode fiber 1 passes through the collimating lens 3, and the laser light from the single-mode fiber 2 passes through the collimating ...
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