Shulou(Shulou.com)06/01 Report--

What does a single mode module look like? What is the LH standard? What does SM stand for? What does GLC-LH-SM mean?

[GLC-LH-SM]

First, the blue pull ring represents a single-mode SFP module, corresponding to the following [SM], that is, the single mode-- single mode.

Second, what runs on this single-mode SFP module is the 1000base-LH standard, while the 1000Base-LH standard:

[1000BaseLH, also known as 1000Base-LH, is a Gigabit Ethernet standard over fiber optic cable defined in IEEE 802.3z.

LH represents a long haul (long-distance transmission), and 1000Base-LH uses long-wave laser (1310nm) to pass through multimode and single-mode fiber.

1000BaseLH can support multimode fiber with a distance of 550m and single-mode fiber with 10km. ]

Sort out your thoughts:

1.S3560 is plugged into SFP's single-mode module (SM) to run the 1000BaseLH standard, because this is the SM module, which is, of course, plugged into the single-mode fiber, this single-mode fiber.

The transmission wavelength is long wavelength 1310nm, and the running distance is 10KM.

As shown in the figure:

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[GLC-LH-MM]

The counterpart is the GLC-LH-MM module, which, as the name implies, is in MM (multi mode)-multimode

The module is plugged into a multimode fiber (orange is multimode fiber) to send data at the wavelength of 1000Base-lh 's 1310nm.

The transmission distance is 550m.

Note: the most commonly used SFP module with multimode fiber plugged into it is [GLC-SX-MM]

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[GLC-SX-MM]

1. The black pull rings are all multimode modules; corresponding to [MM] on the name of the module.

two。 The optical fiber plugged into the multimode SFP module is the optical fiber jumper of the grey LC interface.

Definition: [1000BaseSX, also known as 1000Base-SX, is a Gigabit Ethernet standard over fiber optic cable defined in IEEE 802.3z. SX stands for short wave, 1000Base-SX uses short wave laser to pass through multimode fiber, as opposed to 1000Base-LX, and 1000Base-LX uses long wave laser to pass through multimode and single mode fiber. The furthest distance of multimode fiber based on 1000BaseSX is 550m. ]

The standard running on this GLC-SX-MM multimode module is 1000baseSX, which emits a shortwave laser (850nm laser) on a multimode fiber.

Transmit and transmit data. Of course, to plug in the multimode fiber, the interface of the multimode fiber is the LC interface is gray, or the dark white is fine.

Sort it out:

The data is transmitted by 850nm laser in the GLC-SX-MM multimode module (fiber with the size of 50 × 125 or 62.5 × 125), and the transmission distance is 550 m.

As shown in the figure:

Note that the fiber optic jumper for the LC interface is plugged into the multimode module above. Now all the SFP modules are used, while the SFP modules are all jumpers of the LC interface.

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