The pre -made quartz fiber rod of the optical fiber is made. The outer diameter of the multi -mode fiber and single -mode fiber for communication is 125 μm.

The slim body is divided into two areas: the core (Core) and the Cladding Layer. The diameter of the single -mode fiber fiber fiber is 8 ~ 10 μm, and the multi -mode fiber fiber core diameter has two standard specifications. The core diameter is 62.5 μm (US standard) and 50 μm (European standard).

The interface optical fiber specifications have such descriptions: 62.5 μm/125 μm multi -mode optical fiber, of which 62.5 μm refers to the core diameter of the fiber, and 125 μm refers to the outer diameter of the fiber.

The light wavelength used in single -mode optical fiber is 1310nm or 1550 nm.

Most of the light waves used in multi -mode optical fiber are 850 nm.

In terms of color, you can distinguish 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.

Gigabit light

Gigabit light can work in two modes: compulsory and self -negotiating. 802.3 Gigabit Light Pass in the specification only supports 1000M rate, and supports two dual -workers (Full) and Halfer (HALF).

The most fundamental difference between self -negotiation and compulsory is the different code flow sent when the two establish a physical link. The self -negotiating mode sends/C/code, that is, the configuration code flow, and the mandatory mode is sent// I/code, that is, idle code flow.