The application of the fiber optic-optic network is more widely used, however, to note that, in the face of the different application requirements, the use of optical fiber optic is also a requirement of the strict distinction. The practical application of the optical fiber optic in a variety of optical network determines the performance of fiber optic-optic technology. The different optical fiber optics of the fiber optic networks uses different application technology.
Transmission fiber optic
Application of the optical fiber in the transmission system, first it is realized through a variety of different optical network. Up to now, the construction of a variety of fiber optic-optic transmission network topology can basically be divided into three categories: star, bus and ring. Further from the network hierarchical mold shape, and can the network from top to bottom is divided into several layers, each layer can be divided into several subnets. That is, the network and network constituted by each of the switching center and its transmission system can also continue oriented divided into several smaller subnets, so that the entire digital network can effectively communication service, the entire digitized integrated services digital network ( ISDN) is the overall goal of the communication network. Increasing the popularity of ADSL and CATV, metro access system capacity trunk backbone network expansion needs to take on different types of fiber optic
optic transmission important task.
The dispersion-compensating fiber optic (DCF)
Fiber optic dispersion can make the pulse broadening, and cause bit errors. This is a subject of the need to solve a problem that must be avoided in the communication network, but also the long- distance transmission system. Generally speaking, the fiber optic dispersion, including the two parts of the dispersion of the material dispersion and the waveguide structure, dispersion, depending on the manufacture of silica optical fiber optic mother material and dopant material dispersion and waveguide dispersion is typically a pattern of the effective refractive index with wavelength change tendency. The dispersion compensating optical fiber optic is used in the transmission system to solve a dispersion management techniques.
Amplifying optical fiber optic
Can be made of rare earth-doped silica fiber optic core within the amplifying fiber optic, such as erbium-doped amplifying optical fiber optic (EDF), thulium-doped amplifying fiber optic (TOF), etc., Amplification fiber optic and traditional quartz optical fiber optic has a good integration of performance, but also has a high output, wide bandwidth, low noise, and many other advantages. Made of optical fiber optic amplifier (EDFA) in the amplifying fiber optic is the most widely used in the current transmission system key device. EDF amplification bandwidth from the C-band (1530 1560nm) extended to the L-band (1570 1610), the amplification bandwidth of 80nm. The latest research results show that the EDF is also available in the S-band (1460 1530), optical amplification, and induction Raman fiber optic amplifiers manufactured in the S-band amplification.
Continuous wave (SC) occurs with fiber optic
The supercontinuum wave is the the spectrum phenomenon of ultra-wideband transmission bright light pulses in a transparent medium. Widespread concern by the industry as the new generation of multi -carrier light source. From the 1970 Alfano and shapiro observed in the large-capacity glass ultra-broadband light since, it has already observed in the optical fiber optic, a semiconductor material, water, and other diverse substances ultra broadband light occurs.
Optical devices with optical fiber optic
With a large number of optical communication network construction and expansion, active and passive components usage increasing. The most widely used fiber optic-type devices, the main optical fiber optic amplifier, optical fiber optic coupler, optical wave combiner fiber optic grating (FG), AWG. The above optical devices must have low loss, high reliability, easy low loss coupling and connection can be used in the communication network and communication optical fiber optic. So on R & D to produce the FG fiber optic and devices coupled with fiber optic (LP fiber optic).
Polarization maintaining fiber optic
The earliest polarization maintaining fiber optic for coherent optical transmission fiber optic to be developed. Since then, the field of fiber optic optic sensor technology for FOG. In recent years, due to the increase in the number of DWDM transmission system in the WDM and the speed of development, the polarization maintaining fiber optic has been more widely applied. Currently the most widely Panda fiber optic (PANDA).
Source from Fiber Optic Products Official Blog by Ingellen Technology.