60dB Fiber Laser Collimator 100um - 800um Adjustable Fiber Collimator

Fiber optic collimators convert scattered light into collimated beams through precise coupling between lenses and fibers, significantly improving the accuracy and resolution of optical testing. The core lies in the precise alignment of the lens with the fiber end face (tilt angle<0.5 °), combined with an 8 ° tilt angle (APC type) polishing process, which can effectively suppress end face reflection, with a return loss of ≥ 50dB, ensuring that the beam maintains a low divergence angle (typical value 0.01 °) during long-distance transmission. For example, in high-resolution scenarios such as microscope imaging and laser interferometers, this design can reduce optical path offset, improve the accuracy of test data, and support single-mode (1310nm/1550nm) and multi-mode (850nm/1300nm) wavelengths, suitable for WDM wavelength division multiplexing systems.

Typical values of parameter categories

The multi-mode fiber collimator can achieve low insertion loss (≤ 0.5dB) and high transmittance (≥ 85%) by optimizing the coupling process between the lens and the multi-mode fiber, while supporting a wide range of beam divergence angles (typical value 0.1 ° -1 °). For example, in large-scale beam applications such as industrial laser cutting and projection display, this design can effectively expand the beam coverage range, reduce spot non-uniformity, and support multi fiber core options (single fiber/dual fiber/four fiber), meeting diverse needs from home broadband to industrial grade networks. Its high return loss characteristic can also reduce reflected light interference, ensure signal integrity, and is suitable for high bandwidth, low latency optical communication networks.

The fiber collimator is integrated with a micro lens (diameter 1mm-2mm) through a tight fitting fiber optic package (outer diameter 0.9mm/2.0mm), reducing its volume by more than 50% compared to traditional structures while maintaining anti vibration performance (mechanical stability up to 0.01mrad). For example, in precision optical measurement equipment such as interferometers and spectrometers, this design can be embedded with narrow optical path modules while ensuring stable operation at extreme temperatures (-40 ℃ to+85 ℃). Its compactness also simplifies the installation process, making it suitable for scenarios such as aerospace and portable medical equipment that require strict volume and stability requirements.

The long wavelength fiber collimator can support infrared light transmission at wavelengths of 2 μ m-3 μ m by optimizing the lens material and coating process, while maintaining low insertion loss (≤ 0.5dB) and high return loss (≥ 40dB). For example, in infrared applications such as infrared thermal imaging and LiDAR, this design can effectively expand the beam coverage range, reduce spot non-uniformity, and support multi fiber core options (single fiber/dual fiber/four fiber), meeting diverse needs from home broadband to industrial grade networks. Its high stability also ensures long-term reliable operation in extreme environments such as high temperature and high humidity, making it suitable for harsh scenarios such as military and security.