A WDM system uses a multiplexer at the transmitter to join the several signals together and a demultiplexer at the receiver to split them apart. There are multiplexer(MUX) and demultiplexer(DEMUX). The main function of MUX is to combine multiple signal wavelengths in one fiber for transmission at the sending end. And the main function of the demultiplexer DEMUX is to separate multiple wavelength signals transmitted in an optical fiber at the receiving end https://www.glsunmall.com/fiber-optic-articles/what-s-the-difference-of-cwdm-dwdm-and-ccwdm-.html

Optical circulator is a multi-port optical device with nonreciprocal property. It is based on the nonreciprocal polarization of an optical signal by Faraday effect. When an optical signal is input from any port, it can be output from the next port sequentially with very low loss, and the loss from this port to all other ports is very large, so these ports are not communicating with each other. https://www.glsun.com/article-p106-what-is-optical-circulator-in-optical-communication.html

Optical MEMS are miniature devices with optical, electrical, and mechanical functionalities at the same time, fabricated using batch process techniques derived from microelectronic fabrication. Optical MEMS provide intrinsic characteristics for very low crosstalk, wavelength insensitivity, polarization insensitivity, and scalability. Optical MEMS-based switches are distinguished in being based on mirrors, membranes, and planar moving waveguides. The former two are free-space switches; the latter are waveguide switches. Optical switches based MEMS technology are now widely used and are considered a good option for optical switching networks. https://www.glsunmall.com/fiber-optic-articles/optical-switching-technologies.html

Optical communication is any type of communication in which light is used to carry the signal to the remote end, instead of electrical current. The transmitted information is firstly converted into an electrical signal in the transmitting end, and then the electrical signal is modulated onto the laser beam emitted by the light source, so that the light intensity changes with the frequency of electrical signal. Based on the principle of total internal reflection, the light signal is transmitted in optical fiber. https://www.glsun.com/article-p105-what-is-optical-communication.html

Industrial grade optical modules are used in relatively harsh environments with big temperature differences. The most basic working conditions of industrial optical modules are that they must meet the requirements of -40℃ and 85 ℃. They must adopt scenario-hardened component designs in their electrical components and housing to ensure the service life of the modules. https://www.glsunmall.com/fiber-optic-articles/industrial-grade-vs-commercial-grade-optical-transceiver-modules.html

WDM (Wavelength Division Multiplexing) is to combine a series of optical carrier signals at different wavelengths carrying various information at the transmitter through the Multiplexer and couple them to the same optical fiber for transmission https://www.glsun.com/article-p104-mux-and-demux-in-wdm.html

With the continuous development of computer network technology, computer, printer and other network equipment can achieve information transfer and resource sharing based on specific network technology, computer network has become an essential part of our life. Depending on the scope of coverage, computer networks can be classified into LAN, MAN, and WAN. https://www.glsunmall.com/fiber-optic-articles/what-is-lan-wan-and-man.html

WDM (Wavelength Division Multiplexing ) is a transmission technology that uses one optical fiber to simultaneously transmit multiple optical carriers of different wavelengths. The transmission loss in optical fiber varies with the wavelength of light. In order to reduce loss as much as possible and ensure transmission effect, it is necessary to find the most suitable wavelength for transmission. After a long time of exploration and testing, light in the wavelength range of 1260nm~1625nm has the lowest signal distortion and loss caused by dispersion, and is most suitable for transmission in optical fiber. https://www.glsun.com/article-p103-what-is-c-band-and-l-band-in-wdm.html

The all-optical network refers to the whole process of data transmission and exchange from the source node to the end user node are all conducted in the optical domain, that is, end-to-end complete optical path, without the intervention of electrical signals https://www.glsunmall.com/fiber-optic-articles/advantages-and-technologies-of-all-optical-network.html

Laser is a kind of coherent light, with the characteristics of the same frequency, the same vibration direction and the same phas https://www.glsun.com/article-p102-types-of-lasers-for-optical-modules.html