Laser diodes are key products of fiber lasers and semiconductor lasers. Infrared laser diodes refer to semiconductor diodes that can produce coherent infrared beams at one frequency. Infrared laser diodes are used in applications such as motion sensing, gesture control, 3D depth sensing, laser printing, communications, and more.


Infrared laser communications transmit signals through laser light at infrared wavelengths. Both laser diodes and LEDs can produce infrared wavelength light, but infrared communication is wireless communication, does not require physical connection, is highly flexible, has high optical power, good collimation, and does not diverge.

Infrared communication advantages

  1. Simple and convenient

Infrared communication technology does not require physical connections, is easy to use and has low implementation cost. It is widely used in small mobile devices to exchange data and control electrical equipment.

  1. Precise positioning without interference

Infrared communications can use radio signals transmitted in the return direction to accurately locate each wireless device without interference from other networks.

  1. Safe and harmless

Infrared laser communication uses safe infrared wavelengths, which will not harm the fragile retinal area of ​​the human eye, and is safe and harmless. Since the human eye is insensitive to it, communication signals are difficult to capture and are not easily eavesdropped or interfered with.

  1. High transmission frequency

Infrared laser communications usually use the near-infrared band of the infrared spectrum, usually between 850nm and 1550nm. This frequency band has high transmission rate and strong data transmission capability.

  1. Fast data transmission speed

Infrared laser communication can achieve high-speed data transmission, but the communication transmission distance is short and will be affected by atmospheric absorption and scattering.