Advantages and disadvantages of fiber optic communication

The advantages and disadvantages of fiber-optic communication are as follows:

Large capacity: fiber-optic operating frequency is 8-9 orders of magnitude higher than the operating frequency of the cable, so the developed capacity is large; attenuation is small: optical fiber attenuation per kilometer than the current capacity of the largest communication coaxial cable attenuation per kilometer to be more than one order of magnitude lower; small and lightweight: conducive to the construction and transportation; anti-interference performance: optical fiber is not subject to strong electrical interference and lightning interference and strong anti-electromagnetic pulse. Strong electrical interference, electrical signal interference and lightning interference, anti-electromagnetic pulse ability is also very strong, good confidentiality;

Saving non-ferrous metals: general communication cable to use a lot of copper, lead or aluminum and other non-ferrous metals. Fiber itself is non-metallic, the development of fiber optic communications will save a lot of non-ferrous metals for the country. Convenient expansion: a standard fiber optic leased line with a bandwidth of 2Mbps can be easily upgraded to 4M, 10M, 20M, 100M or even G bandwidth. Upstream and downstream symmetry: Fiber optic media is different from the traditional ADSL telephone cable media downstream large upstream small drawbacks, to achieve upstream and downstream symmetry.

Fiber optic access, especially fiber to the building access is required to have an active device to convert the optical signal into electrical signals of the computer network card, this device is the optical transceiver converter (optical cat). In other words, if the operator is fiber to the building (the vast majority) of the access method, then as long as the optical transceiver power outage, the building will be disconnected. This is very different from the previous phone line access! So if you notice that the sound-activated lights in the hallway of your unit aren't coming on, and you can't get on the internet, that's pretty normal.