With the continuous development of optical communication technology, optical fiber communication has gone through five generations. Through the optimization and upgrading of OM1, OM2, OM3, OM4 and OM5 optical fibers, breakthroughs have been made in transmission capacity and distance. Owing to the demand of characteristics and application scenarios, OM5 optical fibers have shown...

The network applications of tunable lasers can be divided into two parts: static applications and dynamic applications.

The application of lidar in surveying and mapping mainly includes ranging, positioning and drawing of the earth and foreign objects; coherent lidar has important applications in environmental applications, such as wind sensing and the development of synthetic aperture lidar; gated imaging is mainly used in military, medical and security aspects; and lidar has been applied in va...

Fiber laser is gradually replacing the traditional laser in laser marking, laser welding, laser cutting and other fields.

There are three kinds of control technologies in tunable laser: current control technology, temperature control technology and mechanical control technology. Among them, the electronically controlled technology realizes wavelength tuning by changing injection current. It has ns-level tuning speed and wide tuning bandwidth, but its output power is small. The main electronically ...

Today‘s optical fiber communication networks usually operate at 1550 nm spectral window, and use erbium-doped fiber amplifier (EDFA) to extend communication distance or improve the power of wavelength division multiplexing (WDM) technology.

ADSL broadband based on telephone lines has been gradually replaced by "optical fiber into the home". The data center wiring system is also increasingly using optical fiber network. "Optical copper retreat" has become the trend of data center construction. According to the survey report, the number of optical fiber ports has exceeded the number of copper cable ports in data cen...

Femtosecond lasers have made breakthroughs in their structural inability to deal with bulk silicon. The use of extreme NA values allows laser pulses to achieve sufficient ionization to destroy chemical bonds in silicon, leading to permanent structural changes in silicon materials.