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butt coupler

The concept of the end face coupler is relatively simple. In this optical coupler, the end faces of two output fibers are directly coupled to the end face of the input fiber.

Structure of the end face coupler

Structure of the end face coupler

The structure of such an optical coupler is very simple and known as Y-coupler. Since the end face of the incoming optical fiber only partially covers the outgoing fibers, losses are incurred, as well as by the light power not coupled into the optical fibers and by the end face coupling between the imperfect end faces of the fibers.

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Englisch: butt coupler
Updated at: 18.09.2017
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Translations: DE