Multi-channel thin film filter assembly and manufacturing method thereof
A technology of thin-film filter and manufacturing method, which is applied in the field of optical fiber communication, can solve problems such as beam divergence and large insertion loss, and achieve the effect of solving beam divergence
Pending Publication Date: 2018-10-12
AUXORA SHENZHEN
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Problems solved by technology
[0003] In view of the above problems, the present invention provides a multi-channel thin-film filter assembly, which effectively converts the convex divergence effect of the WDM film surface into a concave convergence effect, and solves the problems of beam divergence and large insertion loss of the multi-channel thin-film filter assembly
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[0027] The preferred embodiments provided by the present invention will be specifically described according to the accompanying drawings.
[0028] Figure 2 to Figure 8 , is a schematic diagram of a multi-channel thin film filter assembly provided by the present invention. Such as Figure 2 to Figure 8 As shown, the multi-channel thin film filter assembly includes a first glass block 10 and a second glass block 20, and 2N+2 WDM diaphragms 30 are arranged between the first glass block 10 and the second glass block 20, where N is positive Integer; the front surface of the WDM diaphragm 30 is attached to the rear surface 102 of the first glass block, the rear surface of the WDM diaphragm 30 is provided with a WDM film 31, and the WDM film 31 is attached to the front surface 201 of the second glass block to form a WDM diaphragm 30 In the anti-post structure, the number of WDM diaphragms 30 can be 4, 6, 8.... As a preferred implementation manner, the number of WDM diaphragms is ...
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The invention provides a multi-channel thin film filter assembly,and relates to the field of optical fiber communications. The multi-channel thin film filter assembly comprises a first glass block anda second glass block,and 2N+2 WDM diaphragms are arranged between the first glass block and the second glass block,wherein N is a positive integer; the front surfaces of the WDM diaphragms are attached to the rear surface of the first glass block,the rear surfaces of the WDM diaphragms are provided with WDM films,and the WDM films are attached to the front surface of the second glass block. The upper portion of the front surface of the first glass block is coated with a high-reflective film,and the lower portion of the front surface of the first glass block is coated with an anti-reflection film; the rear surface of the second glass block is coated with an anti-reflection film. Compared with the prior art,according to the multi-channel thin film filter assembly and a manufacturing methodthereof,the WDM films of the WDM diaphragms are attached to the front surface of the second glass block,the convex divergence effect of the surfaces of the WDM films is effectively converted into theconcave convergence effect,and the defects are overcome that an existing multi-channel thin film filter assembly is divergent in light beam and large in insertion loss,the relative parallelism of theoutput light is poor,and the interval difference is large.
Description
technical field [0001] The invention relates to the field of optical fiber communication, in particular to a multi-channel thin film filter component and a manufacturing method thereof. Background technique [0002] Thin-film filters are widely used in wavelength division multiplexing systems, and have gradually developed towards high performance and miniaturization. Commonly used thin-film filters are generally 4 channels, but with the development of optical communication technology, LANWDM with more channels has been proposed. Requirements for wavelength division multiplexing system or CWDM wavelength division multiplexing system. In the prior art, such as figure 1 As shown, the WDM (Wavelength Division Multiplexing, standard wavelength division multiplexing) diaphragm 2 in the multi-channel thin film filter is attached to the glass block 1, the upper part of the front surface of the glass block 1 is coated with a high reflection film, and the lower part of the front surf...
Claims
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Login to View More IPC IPC(8): G02B6/293G02B5/20
CPCG02B5/20G02B6/29389
Inventor 李京辉黄晓东张清明
Owner AUXORA SHENZHEN