Description of the most popular Yutai technology n

  • Detail

Description of Yutai technology network optical fiber transceiver

in the late 1990s, with the popularization and development of network computer technology, people have higher and higher requirements for transmission rate; With the extension of communication range, people have higher requirements for fast network communication data transmission. Nowadays, optical fiber is widely used in the wiring of the backbone in local area projects. The characteristics of optical fiber make the connection of optical fiber interface complex and professional. Because there are many interface types of optical fiber equipment (fiber-optic transceiver, fiber-optic converter), we are also at a loss when choosing. Here is the basic principle of optical fiber

in optical fiber technology, glass (or plastic) filaments (fibers) are used to transmit data. The use of optical fiber technology is completely based on the principle of total internal reflection. The reflection or refraction of light depends entirely on the angle it intersects with, in particular, the unevenly scattered plane. The optical fiber system is very similar to the copper conductor system. The difference is that the optical fiber uses light pulses to transmit information along the optical fiber line, while the copper conductor uses electronic pulses to transmit information along its own line

optical fiber transceiver has been widely used because of its large information capacity, good confidentiality, light weight, small volume, no relay, long transmission distance and other advantages. Optical fiber transceiver uses optical fiber, a high-speed transmission medium, to solve the problem of Ethernet transmission. According to optical fiber, it can be divided into multimode optical fiber transceiver and single-mode optical fiber transceiver

multimode mm optical fiber: it has a large cable core harness, which can allow hundreds of rays to propagate through the optical fiber at the same time. Multimode fiber is mainly used in short distance systems (less than 2km)

single mode SM fiber: it has a much smaller cable core harness, and at the same time, only one light beam can be transmitted through the cable core harness. Single mode fiber is designed to maintain the spatial and spectral integrity of each optical signal after long-distance transmission, so that more information can be transmitted

choice of multimode fiber modem and Single-Mode Fiber Modem: the price of single-mode fiber modem is generally slightly higher than that of multimode fiber modem. However, due to the increasingly widespread use of single-mode fiber, the price of single-mode fiber has decreased significantly, and now it is lower than that of multimode fiber. If the transmission distance is not very far, it is recommended to use multimode fiber modem, However, if the distance exceeds a certain distance, it is recommended to use a single-mode fiber modem, because the price of the whole system can be reduced

optical fiber interfaces are divided into FC, st and SC interfaces. The details are as follows:

fc is the abbreviation of ferraleconnector. Its external reinforcement adopts metal sleeve and the fastening method is turnbuckle. At the earliest time, FC type connectors used the butt end face of ceramic pins in a plane contact manner. This kind of connector has the advantages of simple structure, convenient operation and easy fabrication, but the fiber end is sensitive to dust. Later, this type of connector has been improved, using a pin (PC) with a spherical butt end face, and the external structure has not changed, which greatly improves the performance of insertion loss and return loss

The shell of SC type optical fiber connector is rectangular, and the structural dimensions of the pin and coupling sleeve used are exactly the same as those of FC type, in which the end face of the pin is mostly polished by PC or APC type; The fastening method is plug-in pin latch type, without rotation. This kind of connector is cheap, easy to plug and unplug, with high compressive strength and high installation density

the shell of St type optical fiber connector is circular, and the structural dimensions of the pin and coupling sleeve used are exactly the same as those of FC type, in which the end face of the pin is mostly polished by PC or APC type. The fastening method is turnbuckle. This kind of connector is suitable for all kinds of optical fiber networks, which is easy to operate and has good interchangeability

advantages of optical fiber transmission

1. The width of broadband represents the size of transmission capacity

2. Low loss. The loss of optical waveguide is much smaller. When transmitting 1.31um of light, the loss per kilometer is less than 0.35db. If transmitting 1.55um of light, the loss per kilometer is smaller, up to less than 0.2db

3. Light weight, small diameter, light weight, very convenient installation

4. Strong anti-interference ability. Optical fiber transmission has strong influence on electromagnetic interference Industrial interference has strong resistance

5. High fidelity because optical fiber transmission generally does not need relay amplification, and it will not cause new nonlinear distortion because of amplification

6. reliable working performance the working performance of an optical fiber system with good design and correct installation and commissioning is very reliable

7. the cost continues to decline, and the bandwidth of optical fiber transmission information is doubled every 6 months, while the price is doubled according to the strength limit of low carbon steel and the cross-sectional area of the test piece

optical fiber performance specification:

attenuation: the intensity of the optical line will decrease through a long fiber, in dB. See optical loss

bandwidth: the range of signal frequency or bit rate. Optical fiber components, connections or networks will work with a certain bandwidth

decibel (DB): a measure of light intensity, indicating relative intensity

db: light intensity, which refers to the assumed 0 point

dbm: light intensity, which refers to 1 milliwatt, so the larger the tensile machine is, the better

micron (m): the measurement unit used to measure the light wavelength

nanometer (nm): the measurement unit used to measure the light wavelength (refers to one billionth of a meter)

light loss: refers to the loss of light intensity transmitted in optical fibers, connectors, connectors, etc., in decibels

light intensity: measured in DBM or decibel, refers to one milliwatt

wavelength: a term for light color, often measured in nanometers (nm) or microns (m)

scattering: light will change direction after encountering small particles, which will cause the loss of beam intensity in the optical fiber. Optical time domain reflectometer (OTDR) uses scattering for measurement

Shenzhen Yutai Technology Co., Ltd. has a strong R & D team and advanced production equipment. The products developed have advanced technology and independent intellectual property rights. They have passed a number of patented technologies and various quality certifications at home and abroad, and their performance indicators are at the leading level at home and abroad. It is committed to the research, development and production of interface converters, embedded equipment connection modules, networking optical fiber transceivers, serial port servers, interface extenders, interface extenders, isolation protectors, industrial Ethernet switches, video conversion, security equipment and other products. It is a leading domestic supplier of industrial communication solutions

Copyright © 2011 JIN SHI