1570nm single wavelength laser source Manufacturers

Welcome to our booth: xiamen optical Exhibition China 2023, XMIPE Box Optronics

Recently, with the support of the National Natural Science Foundation of China, Shenzhen Basic Research and other projects, Assistant Professor Jin Limin, a member of Harbin Institute of Technology (Shenzhen) Micro-nano Optoelectronics team, cooperated with Professor Wang Feng and Professor Zhu Shide of City University of Hong Kong, and published a research paper in the internationally renowned journal Nature-Communications. Harbin Institute of Technology (Shenzhen) is the communication unit.

The full name of VCESL is a vertical cavity surface emitting laser, which is a semiconductor laser structure in which an optical resonant cavity is formed in the direction perpendicular to the semiconductor epitaxial wafer and the laser beam emitted is perpendicular to the surface of the substrate. Compared with LEDs and edge-emitting lasers EEL, VCSELs are superior in terms of accuracy, miniaturization, low power consumption, and reliability.

Optical fiber amplifier refers to a new type of all-optical amplifier used in optical fiber communication lines to achieve signal amplification. Among the currently practical fiber amplifiers, there are mainly erbium-doped fiber amplifiers (EDFA), semiconductor optical amplifiers (SOA) and fiber Raman amplifiers (FRA). Among them, erbium-doped fiber amplifiers are now widely used in long-distance applications due to their superior performance. It is used as power amplifier, relay amplifier and preamplifier in the fields of long-distance, large-capacity and high-speed optical fiber communication systems, access networks, optical fiber CATV networks, systems (radar multi-channel data multiplexing, data transmission, guidance, etc.).

A device that converts the CO concentration variable in the air into a corresponding output signal.

In most cases the emitted light from the laser is polarized. Usually linearly polarized, that is, the electric field oscillates in a specific direction perpendicular to the direction of propagation of the laser beam. Some lasers (eg, fiber lasers) do not produce linearly polarized light, but other stable polarization states, which can be converted to linearly polarized light using a suitable combination of waveplates. In the case of broadband radiation, and the polarization state is wavelength dependent, the above method cannot be used.