A preparation method and application of a multi-core fiber coupler with broadband flat transmission
A technology for multi-core optical fibers and couplers, which is applied in the field of preparation of multi-core optical fiber couplers, can solve problems such as transmission loss fluctuations, limit the spectral band range, etc., and achieve the effects of suppressing changes, broadening the spectral band range, and suppressing interference effects.
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[0046] In order to achieve a low loss connection of the broadband range, the degree of fluctuation of the transmission loss is suppressed, and a method of preparing a broadband flat-permeable multi-core fiber coupler provided by the present invention includes the following steps:
[0047] (1) After the partial coating layer of the N-root non-multi-clad fiber surface is removed, the n-non-multi-clad fiber is stripped by the cutting layer, and the first intermediate member is obtained.
[0048] (2) After the coating layer of the N root multipoint fiber surface is removed, one end is cut to obtain a second middle member;
[0049] (3) Follow the cutting end of the first middleware and the second middleware to obtain figure 2 The third middleware shown, the third middle member includes three regions, sequentially containing a first non-multiplashing fiber region including a core layer, a cladding layer, and a coating layer, and the second non-multiple of the core layer and the cladding...
Embodiment 1
[0066] 1) Optical fiber pretreatment: Seven a total of single-mode fibers, length is 100-150 cm; stripping part of the single-mode fiber surface is coated, and the fiber is cleaned using dust-free dust-free dust, after it is The end of the stripped coating layer is cut, resulting in the first middle member, the first middle member contains two parts, the first portion is a complete single mode fiber including the core layer, the cladding, and the coating layer, and the second portion is only only Contains the core layer and cladding fiber; intercepting a total of seven, length 20cm; stripping all coating layers of the surface of the multi-clad fiber, and cleaning with dust-free paper with anhydrous ethanol, after Cut, get the second middleware;
[0067] 2) Optical fiber welding: After the cutting end of the first middleware and the cutting end of the second middleware, it is obtained. figure 2 The third middle member shown; the third middle member includes three portions, and the ...
Embodiment 2
[0082] 1) Optical fiber pretreatment: Seven a total of single-mode fibers, length is 100-150 cm; stripping part of the single-mode fiber surface is coated, and the fiber is cleaned using dust-free dust-free dust, after it is The end of the stripped coating layer is cut, resulting in the first middle member, the first middle member contains two parts, the first portion is a complete single mode fiber including the core layer, the cladding, and the coating layer, and the second portion is only only Contains the core layer and cladding fiber; intercepting a total of seven, length 20cm; stripping all coating layers of the surface of the multi-clad fiber, and cleaning with dust-free paper with anhydrous ethanol, after Cut, get the second middleware;
[0083] 2) Optical fiber welding: After the cutting end of the first intermediate member is paired with the cutting end of the second middle member, the third middle member is obtained; the third middle member includes three parts, the fir...
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