Optical fiber, optical module and optical interface commonly used knowledge finishing(the third part of optical fiber characteristics parameters)

- Jul 18, 2019-

The structure of the optical fiber is made of prefabricated quartz fiber rods, and the external diameter of the pass-through multimode fiber and single-mode fiber is 125 μm.
The fiber body is divided into two regions: Core and cladding layer. The diameter of the single-mode fiber core is 8 ~ 10 μm, and the multi-mode fiber core diameter has two standard specifications. The core diameter is 62.5 μm(US standard) and 50 μm(European standard), respectively.
The interface fiber specification has this description: 62.5 μm / 125 μm multimode fiber, where 62.5 μm refers to the core diameter of the fiber and 125 μm refers to the outer diameter of the fiber.
Single mode fiber uses a wavelength of 1310 nm or 1550 nm.
The wavelength of light used for multimode fibers is mostly 850 nm.
From the color can distinguish between single-mode fiber and multi-mode fiber. The single-mode fiber outer body is yellow, and the multi-mode fiber outer body is orange-red.

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