روش‌های ضعیف انتقال قدرت، کاربردهای فیبر نوری

With the increasing maturity of technology in the fibre optic communication network industry, a variety of solutions are increasingly flexible and highly feasible to implement. Optical network communication is increasingly used in the field of monitoring and transmission. When we transmit over long distances, we usually use optical fibres for transmission. Because the transmission distance of optical fibre is very long, generally speaking the transmission distance of single-mode fibre is over 10 km, while the transmission distance of multi-mode fibre can reach up to 2 km. In fibre optic networks, we often use fibre optic transceivers. So, how do you connect a fibre optic transceiver? Let's find out together.

روش های ضعیف انتقال نیرو

1. نقش فرستنده و گیرنده فیبر نوری

　(1) Fiber optic transceiver can extend the Ethernet transmission distance and extend the Ethernet coverage radius.

　(2) Fiber optic transceivers can convert between 10M, 100M or 1000M Ethernet electrical interfaces and optical interfaces.

　(3) Using fibre-optic transceivers to construct networks can save network investment.

　(4) Optical fibre transceivers enable faster interconnection between servers, repeaters, hubs, terminals and terminators.

　(5) Fiber optic transceivers have microprocessor and diagnostic interfaces that can provide a variety of data link performance information.

2.{1}}آیا فرستنده و گیرنده فیبر نوری تقسیمی دارد که به کدام ارسال و کدام دریافت می‌شود؟

　　When using fiber optic transceivers, many friends will encounter such questions: 1.

　(1) Do fibre optic transceivers have to be used in pairs?

　(2) Is there a distinction between one fiber optic transceiver for receiving and one for transmitting? Or can any two fiber optic transceivers be used as a pair?

　(3) If fiber optic transceivers must be used in pairs, does the pair have to be the same brand and model? Or can any brand be used in combination?

　　In our group there are also some friends asked the above three questions, many friends in the process of using the project may have this question, which in the end how it is?

　　Answer: Fiber optic transceivers as photoelectric conversion equipment is generally used in pairs, but there can also be fiber optic transceivers and fiber optic switches, fiber optic transceivers and SFP transceivers used in pairs are also very normal, in principle, as long as the optical transmission wavelength is the same, the signal package format is the same and both support a certain protocol can achieve fiber optic communication.

　　Generally, single-mode dual-fibre (two fibres are required for normal communication) transceivers are not divided into transmitter and receiver, and can be used as long as they are available in pairs.

　　Only single-fibre transceivers (which require a single fibre for normal communication) will have a split transmitter and receiver.

　　Whether a dual-fibre transceiver or a single-fibre transceiver is used in pairs, different brands are compatible and interoperable. But the rate, wavelength and mode need to be the same.

　　That is to say, different rates (100 megabit and gigabit), different wavelengths (1310nm and 1300nm) are not interoperable, in addition to this, even the same brand of single-fibre transceivers and dual-fibre pairs are not interoperable.

　　So the question arises, what is a single-fibre transceiver and what is a dual-fibre transceiver? What is the difference between them?

　　3. What is a single-fibre transceiver? What is a dual-fibre transceiver?

　　A single-fibre transceiver is a single-mode fibre optic cable. A single-fibre transceiver uses only one core, and both ends are connected to this core, and the transceivers at both ends use different optical wavelengths, so they can transmit optical signals in one core.

　　Dual-fiber transceiver is the use of two cores, one to send a receiving, one end is sent the other end must be inserted in the receiving port, that is, the two ends to cross.

　(1) Single-fibre transceiver

　　Single-fiber transceiver to achieve both transmitting and receiving functions, it uses wavelength division multiplexing technology, the two different wavelengths of optical signals in a fiber transmission so as to achieve the transmission and reception.

　　So a single mode single fibre transceiver transmits through a single fibre, so both transmitting and receiving light are transmitted through a single fibre core at the same time. In this case, two wavelengths of light must be used to differentiate between them in order to achieve normal communication.

　　Therefore the optical module of a single mode single fibre transceiver emits light at two wavelengths, typically 1310nm/1550nm, so that there is a difference between the two ends of the interconnection of a pair of transceivers:

　　One end of the transceiver emits 1310nm and receives 1550nm.

　　The other end transmits 1550nm and receives 1310nm.

　　To make it easier for the user to differentiate, letters are generally used instead.

　　This results in an A-side (1310nm/1550nm) and a B-side (1550nm/1310nm). Users

　　Users must use the AB pair to use, not AA or BB connection.

　　AB end only single-fiber fiber transceiver will be used to.

　(2) Dual fibre transceiver

　　Dual-fiber transceiver has TX port (transmitting port) and RX port (receiving port), both ports are transmitting the same wavelength 1310nm, receiving is also 1310nm, so the wiring of the two parallel fiber cross-connected.

　(3) How to distinguish single-fibre transceivers from dual-fibre transceivers?

　　There are two ways to distinguish a single-fibre transceiver from a dual-fibre transceiver. 

　　① When the fiber optic transceiver embedded optical module, fiber optic transceiver according to the number of connected fiber patch cable cores are divided into single-fiber transceiver and dual-fiber transceiver. The single-fibre transceiver is connected to a single core, which is responsible for both transmitting and receiving data; while the dual-fibre transceiver is connected to two cores, one of which is responsible for transmitting data and the other for receiving data.

　　②When the fiber optic transceiver does not have an embedded optical module, it is necessary to distinguish whether it is a single-fiber transceiver or a dual-fiber transceiver according to the optical module inserted. When the fiber optic transceiver is inserted into the single-fiber bi-directional optical module, that is, the interface is a simplex type, the fiber optic transceiver for single-fiber transceiver; when the fiber optic transceiver is inserted into the dual-fiber bi-directional optical module, that is, the interface is a duplex type, the transceiver for dual-fiber transceiver.

　　4. Fiber optic transceiver indicator and connection

　(1) The indicator light of the fiber optic transceiver

　(2) Fiber optic transceiver connection

　　Network schematic diagram

　　Fiber optic transceivers are very commonly used in weak electrical engineering, in the transmission is very convenient, is also very suitable for application to a variety of scenarios, in the weak electrical system is an important network transmission of accessories. Weak electrical engineering is basically with this some way into the transmission, transmission must be based on the site conditions, flexible networking, choose not to be the best, but must be the most suitable for the project, so that the network can achieve the best operating results, so that the enterprise down to the most appropriate cost.