NakuLaser Blog

  Optical fibers can be classified in various ways according to different characteristics, such as single-mode optical fibers and multi-mode optical fibers according to optical modes. Divided by refractive index: jumper fiber and graded fiber. Among them, according to ITU standards, optical fibers are divided into seven types: G651, G652, G653, G654, G655, G656, G657, among which G652 and G657 are commonly used. First of all, what is the ITU standard? The ITU standard is also the International Telecommunication Union (ITU for short). The Chinese name of ITU-T is the ITU Telecommunication Standardization Sector, which is an organization under the management of the International Telecommunication Union that specializes in formulating international standards related to telecommunications. In order to make the optical fiber have a unified international standard, ITU-T has formulated a unified optical fiber standard (G standard). According to the ITU-T recommendations on optical fibers,...

This is   808nm 4W fiber laser source  with LCD screen, can display current laser power and working current. The output power is adjusted by 5 buttons. The 808nm laser is a near-infrared laser, we can only see very small red dots.

808nm High power Pigtailed Laser diode + Multimode optial fiber + Drive circuit Fiber: Fiber Diameter 105μm / Numerical Aperture 0.22 / Fiber Connecter (FC/PC)

Fiber laser  advantages : (1) The advantages of miniaturization and intensification brought about by the low manufacturing cost of glass optical fiber, mature technology and the availability of optical fiber; (2) The glass fiber does not require strict phase matching of the incident pump light like a crystal, which is due to the non-uniform broadening caused by the splitting of the glass matrix Stark, resulting in a wide absorption band; (3) The glass material has a very low volume-to-area ratio, and the heat dissipation is fast and the loss is low, so the up-conversion efficiency is high and the laser threshold is low; (4) The output laser has many wavelengths: this is because the rare earth ion energy level is very rich and there are many kinds of rare earth ions; (5) Tunability: Since the rare earth ion energy level is wide and the fluorescence spectrum of the glass fiber is wide. (6) Since there is no optical lens in the cavity of the fiber laser, it has th...

We use two 100mW blue fiber coupled laser . One of them is a 1 meter long, 600μm core diameter fiber and the fiber interface is SMA905. The other one is 3 meters, 200μm core diameter fiber and the fiber interface is FC/PC . Both are 473nm solid state laser. Let's check it now.