For rack mount optical transceivers, desktop optical transceivers and card optical transceivers. Many friends are not familiar with fiber optic transceivers, let alone what kind of fiber optic transceivers to buy. Let's see how to choose the most suitable fiber optic transceiver for you?
Optical fiber transceiver is an Ethernet transmission media conversion unit that interchanges short-distance twisted-pair electrical signals and long-distance optical signals. It is also called a photoelectric converter in many places and is used in optical communication equipment. Wider and wider. Optical fiber transmission equipment such as telephone optical transceivers and optical fiber access equipment can realize transmission between equipment through optical transceivers.
Generally, optical transceivers are divided into single-mode and multi-mode, single-fiber and dual-fiber. The default interface type is SC, and FC, LC, etc. can also be configured according to customer needs. The transmission distance is generally 25 kilometers, 40 kilometers, 60 kilometers, and 80 kilometers. , 100 km, 120 km, etc.
1. Single-mode and multi-mode optical transceivers
Single-mode means that the optical signal propagates through a single channel, while dual-mode or multi-mode is about the same, it propagates through two or more channels. When the user chooses whether to use single-mode or multi-mode transmission, the primary determinant is the distance the user needs to transmit.
Single-mode transmission has less attenuation, but the transmission speed is also slow, and it is suitable for long-distance transmission. Generally, the distance is greater than 5 miles, and it is best to choose single-mode fiber; For short-distance transmission, generally less than 5 miles, multimode fiber is the best choice.
2. Single-fiber and dual-fiber optical transceivers
Single-fiber refers to a single-core optical fiber, which transmits on one core; dual-fiber refers to a dual-core optical fiber, which transmits on two cores, one receiving and one sending. In general, users mostly use dual-fiber, because in terms of price, dual-fiber has more advantages.
The general use of single fiber is in the situation where the optical cable is relatively tight. For example, if the 12-core optical fiber is dual-core, it can only transmit 6 networks; if all 12 cores use single-fiber, 50% of the wiring can be saved.
3. FC, SC, LC optical transceiver
FC, SC, and LC are a type of interface for pigtails, and SC is more commonly used for pigtail interfaces. When purchasing an optical transceiver interface, pay attention to whether this interface matches the pigtail interface you provide. Of course, there are many types of optical cables on the market, for example, one end is FC and the other end is SC. SFP optical modules are mostly used in LC.
The transmission distance of the optical transceiver depends on the user's actual application choice, and the corresponding optical transceiver can be selected as long as the transmission distance between the two devices.
